Ofek, E. O., Breslauer, B., Gal-Yam, A., Frail, D., Kasliwal, M. M., Kulkarni, S. R., ...
(abridged) Recently, a new class of radio transients in the 5-GHz band was detected by Bower et al. We present new deep near-Infrared (IR) observations of the field containing these transients, and...
Mysterious transients unmasked as the bright blue death throes of massive stars (2009)
Quimby, R. M., Kulkarni, S. R., Kasliwal, M. M., Gal-Yam, A., Arcavi, I., Sullivan, M., ...
Movies of the heavens, produced by modern synoptic imaging surveys, are revolutionizing the field of cosmic explosions in astronomy. Recent discoveries suggest entirely new pathways for the deaths of...
Elemental abundances in the Galactic bulge from microlensed dwarf stars (2009)
Bensby, T., Feltzing, S., Johnson, J. A., Gould, A., Sana, H., Gal-Yam, A., ...
We present elemental abundances of 13 microlensed dwarf and subgiant stars in the Galactic bulge, which constitute the largest sample to date. We show that these stars span the full range of...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter) showed remarkable emission-line and continuum properties and strong emission-line variability first reported in 2008 (Paper I). The...
Batista, V., Dong, Subo, Gould, A., Beaulieu, J. P., Cassan, A., Christie, G. W., ...
We analyze OGLE-2007-BLG-050, a high magnification microlensing event (A ~ 432) whose peak occurred on 2 May, 2007, with pronounced finite-source and parallax effects. We compute planet detection...
The Palomar Transient Factory: System Overview, Performance and First Results (2009)
Law, N. M., Kulkarni, S. R., Dekany, R. G., Ofek, E. O., Quimby, R. M., Nugent, P. E., ...
The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient survey is performed using a new 8.1 square...
OGLE-2009-BLG-076S - The most metal-poor dwarf star in the Galactic bulge (2009)
Bensby, T., Feltzing, S., Johnson, J. A., Gal-Yam, A., Udalski, A., Gould, A., ...
Measurements based on a large number of red giant stars suggest a broad metallicity distribution function (MDF) for the Galactic bulge, centered on [Fe/H]=-0.1. However, recently, a new opportunity...
A new type of stellar explosion (2009)
Perets, H. B., Gal-Yam, A., Mazzali, P., Arnett, D., Kagan, D., Filippenko, A. V., ...
The explosive deaths of stars (supernovae; SNe) are generally explained by two physical processes. Young massive stars (more than eight solar masses, M_Sun) undergo gravitational core-collapse and...
The Collimation and Energetics of the Brightest Swift Gamma-Ray Bursts (2009)
Cenko, S. B., Frail, D. A., Harrison, F. A., Kulkarni, S. R., Nakar, E., Chandra, P., ...
Long-duration gamma-ray bursts (GRBs) are widely believed to be highly-collimated explosions (opening angle theta ~ 1-10 deg). As a result of this beaming factor, the true energy release from a GRB...
OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? (2009)
Dong, Subo, Gould, Andrew, Udalski, Andrzej, Anderson, Jay, Christie, G. W., Gaudi, B. S., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
The mean type Ia Supernova spectrum over the past nine gigayears (2009)
Sullivan, M., Ellis, R. S., Howell, D. A., Riess, A., Nugent, P. E., Gal-Yam, A.
We examine the possibility of evolution with redshift in the mean rest-frame ultraviolet (UV; λ ≾ 4500 Å) spectrum of Type Ia Supernovae (SNe Ia) sampling the redshift range 0 < z < 1.3. We find...
Dark Bursts in the Swift Era: The Palomar 60 Inch-Swift Early Optical Afterglow Catalog (2009)
Cenko, S. B., Kelemen, J., Harrison, F. A., Fox, D. B., Kulkarni, S. R., Kasliwal, M. M., ...
We present multicolor optical observations of long-duration γ-ray bursts (GRBs) made over a three-year period with the robotic Palomar 60 inch telescope (P60). Our sample consists of all 29 events...
Type Ia supernova science 2010-2020 (2009)
Howell, D. A., Conley, A., Della Valle, M., Nugent, P. E., Perlmutter, S., Marion, G. H., ...
In the next decade Type Ia supernovae (SNe Ia) will be used to test theories predicting changes in the Dark Energy equation of state with time. Ultimately this requires a dedicated space mission like...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ0952+2143 showed remarkable emission-line properties first reported in 2008 (paper I), which are the consequence of a powerful high-energy flare. Here we report follow-up observations...
The Mean Type Ia Supernova Spectrum Over the Past 9 Gigayears (2009)
Sullivan, M., Ellis, R. S., Howell, D. A., Riess, A., Nugent, P. E., Gal-Yam, A.
We examine the possibility of evolution with redshift in the mean rest-frame ultraviolet (UV;
OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? (2009)
Christie, G.W., Gaudi, B.S., Kubiak, M., Szymanski, M.K., Pietrzynski, G., Soszynski, I., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
OGLE-2005-BLG-071Lb, The Most Massive M Dwarf Planetary Companion? (2009)
Dong, S, Gould, A, Udalski, A, Anderson, J, Christie, GW, Gaudi, BS, ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
Wang, Xiaofeng, Li, Weidong, Filippenko, Alexei V., Foley, R. J., Kirshner, R. P., Modjaz, M., ...
We present extensive photometry at ultraviolet (UV), optical, and near-infrared (NIR) wavelengths, as well as dense sampling of optical spectra, for the normal type Ia supernova (SN Ia) 2005cf. From...
Gal-Yam, A., Bufano, F., Barlow, T. A., Baron, E., Benetti, S., Cappellaro, E., ...
We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938,...
Gal-Yam, A., Bufano, F., Barlow, T. A., Baron, E., Benetti, S., Cappellaro, E., ...
We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938,...
The Type IIb SN 2008ax: spectral and light curve evolution (2008)
Pastorello, A., Kasliwal, M., Crockett, R. M., Valenti, S., Arbour, R., Itagaki, K., ...
We present spectroscopy and photometry of the He-rich supernova (SN) 2008ax. The early-time spectra show prominent P-Cygni H lines, which decrease with time and disappear completely about 2 months...
Dark Bursts in the Swift Era: The Palomar 60 inch-Swift Early Optical Afterglow Catalog (2008)
Cenko, S. B., Kelemen, J., Harrison, F. A., Fox, D. B., Kulkarni, S. R., Kasliwal, M. M., ...
We present multi-color optical observations of long-duration gamma-ray bursts (GRBs) made over a three year period with the robotic Palomar 60 inch telescope (P60). Our sample consists of all 29...
SN 2007ax : an extremely faint type Ia supernova (2008)
Kasliwal, M. M., Ofek, E. O., Gal-Yam, A., Rau, A., Brown, P. J., Cenko, S. B., ...
We present multiband photometric and optical spectroscopic observations of SN 2007ax, the faintest and reddest Type Ia supernova (SN Ia) yet observed. With M_B = − 15.9 and (B − V)_(max) = 1.2,...
GRB 070201: A possible soft gamma-ray repeater in M31 (2008)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
GRB 070201 was a bright, short-duration, hard-spectrum gamma-ray burst detected by the Interplanetary Network. Its error quadrilateral, which has an area of 0.124 deg^2, intersects some prominent...
SN2007ax : An Extremely Faint Type Ia Supernova (2008)
Kasliwal, M. M., Ofek, E. O., Gal-Yam, A., Rau, A., Brown, P. J., Cenko, S. B., ...
We present multi-band photometric and optical spectroscopic observations of SN2007ax, the faintest and reddest Type Ia supernova (SNIa) yet observed. With M_B = -15.9 and (B-V)max = 1.2, this SN is...
Ellis, R.S., Sullivan, M., Nugent, P.E., Howell, D.A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae(SNe) and its dispersion using high signal-to-noise Keck-I/LRIS-B spectroscopyfor a sample of 36 events at intermediate...
GALEX Spectroscopy of SN 2005ay suggests a UV spectral uniformity among type II-P supernovae (2008)
Gal-Yam, A., Bufano, F., Barlow, T., Baron, E., Benetti, S., Cappellaro, E., ...
We present the first results from our GALEX program designed to obtain ultraviolet (UV) spectroscopy of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC...
The type IIb SN 2008ax: the nature of the progenitor (2008)
Crockett, R. M., Eldridge, J. J., Smartt, S. J., Pastorello, A., Gal-Yam, A., Fox, D. B., ...
A source coincident with the position of the type IIb supernova (SN) 2008ax is identified in pre-explosion Hubble Space Telescope (HST) Wide Field Planetary Camera 2 observations in three optical...
The type IIb SN 2008ax: spectral and light curve evolution (2008)
Pastorello, A., Kasliwal, M. M., Crockett, R. M., Valenti, S., Arbour, R., Itagaki, K., ...
We present spectroscopy and photometry of the He-rich supernova (SN) 2008ax. The early-time spectra show prominent P-Cygni H lines, which decrease with time and disappear completely about two months...
OGLE-2005-BLG-071Lb, the Most Massive M-Dwarf Planetary Companion? (2008)
Dong, Subo, Gould, Andrew, Udalski, Andrzej, Anderson, Jay, Christie, G. W., Gaudi, B. S., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A. M., Berger, E., Page, K. L., Schady, P., Parrent, J., Pooley, D., ...
Massive stars end their short lives in spectacular explosions, supernovae, that synthesize new elements and drive galaxy evolution. Throughout history supernovae were discovered chiefly through their...
Ellis, R. S., Sullivan, M., Nugent, P. E., Howell, D. A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe) and its dispersion using high signal-to-noise ratio Keck-I/LRIS-B spectroscopy for a sample of 36 events at...
The broad-lined type Ic supernova 2003jd (2008)
Valenti, S., Benetti, S., Cappellaro, E., Patat, F., Mazzali, P., Turatto, M., ...
The results of a worldwide coordinated observational campaign on the broad-lined Type Ic supernova (SN Ic) 2003jd are presented. In total, 74 photometric data points and 26 spectra were collected...
The supernova rate in local galaxy clusters (2008)
Mannucci, F., Maoz, D., Sharon, K., Botticella, M. T., Della Valle, M., Gal-Yam, A., ...
We report a measurement of the supernova (SN) rates (Type Ia and core-collapse) in galaxy clusters based on the 136 supernovae of the sample described in Cappellaro, Evans & Turatto, and Mannucci et...
Pastorello, A., Mattila, S., Zampieri, L., Della Valle, M., Smartt, S. J., Valenti, S., ...
We present new spectroscopic and photometric data of the type Ibn supernovae 2006jc, 2000er and 2002ao. We discuss the general properties of this recently proposed supernova family, which also...
The broad-lined type Ic supernova 2003jd (2008)
Valenti, S., Benetti, S., Cappellaro, E., Patat, F., Mazzali, P., Turatto, M., ...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A. M., Berger, E., Page, K. L., Schady, P., Parrent, J., Pooley, D., ...
GRB 070201: a possible soft gamma-ray repeater in M31 (2008)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A.M., Berger, E., Page, K.L., Schady, P., Parrent, J., Pooley, D., ...
Massive stars end their short lives in spectacular explosions—supernovae—that synthesize new elements and drive galaxy evolution. Historically, supernovae were discovered mainly through their...
GRB 070201: A possible Soft Gamma Ray Repeater in M31 (2007)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
The gamma-ray burst (GRB) 070201 was a bright short-duration hard-spectrum GRB detected by the Inter-Planetary Network (IPN). Its error quadrilateral, which has an area of 0.124 sq. deg, intersects...
GRB070125: The First Long-Duration Gamma-Ray Burst in a Halo Environment (2007)
Cenko, S. B., Fox, D. B., Penprase, B. E., Cucchiara, A., Price, P. A., Berger, E., ...
We present the discovery and high signal-to-noise spectroscopic observations of the optical afterglow of the long-duration gamma-ray burst GRB070125. Unlike all previously observed long-duration...
The Broad-lined Type Ic SN 2003jd (2007)
Valenti, S., Benetti, S., Cappellaro, E., Patat, F., Mazzali, P., Turatto, M., ...
The results of a world-wide coordinated observational campaign on the broad-lined Type Ic SN 2003jd are presented. In total, 74 photometric data points and 26 spectra were collected using 11...
Ellis, R. S., Sullivan, M., Nugent, P. E., Howell, D. A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe Ia) and its dispersion using high signal-to-noise Keck-I/LRIS-B spectroscopy for a sample of 36 events at...
The supernova rate in local galaxy clusters (2007)
Mannucci, F., Maoz, D., Sharon, K., Botticella, M. T., Della Valle, M., Gal-Yam, A., ...
We report a measurement of the supernova (SN) rates (Ia and core-collapse) in galaxy clusters based on the 136 SNe of the sample described in Cappellaro et al. (1999) and Mannucci et al. (2005)....
Upper limit for circumstellar gas around the Type Ia SN 2000cx (2007)
Patat, F., Benetti, S., Justham, S., Mazzali, P. A., Pasquini, L., Cappellaro, E., ...
The nature of the companion stars in Type Ia Supernova (SNe) progenitor systems remains unclear. One possible way to discriminate between different scenarios is the presence (or absence) of...
A New Population of High-Redshift Short-Duration Gamma-Ray Bursts (2007)
Berger, E., Fox, D. B., Price, P. A., Nakar, E., Gal-Yam, A., Holz, D. E., ...
The redshift distribution of the short-duration gamma-ray bursts (GRBs) is a crucial, but currently fragmentary, clue to the nature of their progenitors. Here we present optical observations of nine...
Detection of circumstellar material in a normal Type Ia Supernova (2007)
Patat, F., Chandra, P., Chevalier, R., Justham, S., Podsiadlowski, Ph., Wolf, C., ...
Type Ia supernovae are thought to be thermonuclear explosions of accreting white dwarfs that reach a critical mass limit. Despite their importance as cosmological distance indicators, the nature of...
An unusually brilliant transient in the galaxy Messier 85 (2007)
Kulkarni, S. R., Ofek, E. O., Rau, A., Cenko, S. B., Soderberg, A. M., Fox, D. B., ...
Historically, variable and transient sources have both surprised astronomers and provided new views of the heavens. Here we report the discovery of an optical transient in the outskirts of the...
Ofek, E. O., Cenko, S. B., Gal-Yam, A., Fox, D. B., Nakar, E., Rau, A., ...
On 2006 May 5, a four second duration, low energy, ~10^49 erg, Gamma-Ray Burst (GRB) was observed, spatially associated with a z=0.0894 galaxy. Here, we report the discovery of the GRB optical...
Towards a Cosmological Hubble Diagram for Type II-P Supernovae (2007)
Nugent, P., Sullivan, M., Ellis, R., Gal-Yam, A., Leonard, D.C., Howell, D.A., ...
We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based upon five events at redshift up to z~0.3. This diagram was constructed using photometry from the...
Detection of circumstellar material in a normal type Ia supernova (2007)
Patat, F., Chandra, P., Chevalier, R., Justham, S., Podsialkowski, P., Wolf, C., ...
Upper limit for circumstellar gas around the type Ia SN 2000cx (2007)
Patat, F., Benetti, S., Justham, S., Mazzali, P. A., Pasquini, L., Cappellaro, E., ...
SN 2006gy: An extremely luminous supernova in the galaxy NGC 1260 (2006)
Ofek, E. O., Cameron, P. B., Kasliwal, M. M., Gal-Yam, A., Rau, A., Kulkarni, S. R., ...
With an extinction-corrected V-band peak absolute magnitude of about -22, supernova (SN) 2006gy is probably the brightest SN ever observed. We report on multi-wavelength observations of this SN and...
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2006)
Rattenbury, N.J., Abe, F., Bennett, D.P., Bond, I.A., Calitz, J.J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2006)
Rattenbury, N.J., Abe, F., Bennett, D.P., Bond, I.A., Calitz, J.J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2006)
Rattenbury, N.J., Abe, F., Bennett, D.P., Bond, I.A., Calitz, J.J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
A Survey for Supernovae in Massive High-Redshift Clusters (2006)
Sharon, Keren, Gal-Yam, A., Maoz, D., Donahue, M., Ebeling, H., Ellis, R., ...
We describe our ongoing program designed to measure the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high z, and in cluster...
The Short-Hard GRB 051103: Observations and Implications for Its Nature (2006)
Ofek, E. O., Kulkarni, S. R., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., ...
The bright short-hard GRB 051103 was triangulated by the Inter-Planetary Network and found to occur in the direction of the nearby M81/M82 galaxy group. Given its possible local-universe nature, we...
Cenko, S. B., Kasliwal, M., Harrison, F. A., Pal'shin, V., Frail, D. A., Cameron, P. B., ...
We present observations of the unusually bright and long γ-ray burst GRB 050820A, one of the best sampled broadband data sets in the Swift era. The γ-ray light curve is marked by a soft precursor...
A New Population of High Redshift Short-Duration Gamma-Ray Bursts (2006)
Berger, E., Fox, D. B., Price, P. A., Nakar, E., Gal-Yam, A., Holz, D. E., ...
The redshift distribution of the short-duration GRBs is a crucial, but currently fragmentary, clue to the nature of their progenitors. Here we present optical observations of nine short GRBs obtained...
The short-hard GRB 051103: Observations and implications for its nature (2006)
Ofek, E. O., Kulkarni, S. R., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., ...
The bright short-hard GRB 051103 was triangulated by the inter-planetary network and found to occur in the direction of the nearby M81/M82 galaxy group. Given its possible local-Universe nature, we...
The gamma-ray burst GRB060614 requires a novel explosive process (2006)
Gal-Yam, A., Fox, D., Price, P., Davis, M., Leonard, D., Soderberg, A., ...
Over the past decade our physical understanding of gamma-ray bursts (GRBs) has progressed rapidly thanks to the discovery and observation of their long-lived afterglow emission. Long-duration (T < 2...
Cenko, S. B., Kasliwal, M., Harrison, F. A., Pal'shin, V., Frail, D. A., Cameron, P. B., ...
We present observations of the unusually bright and long gamma-ray burst GRB 050820A, one of the best-sampled broadband data sets in the Swift era. The gamma-ray light curve is marked by a soft...
An Energetic Afterglow from a Distant Stellar Explosion (2006)
Frail, D. A., Cameron, P. B., Kasliwal, M., Nakar, E., Price, P. A., Berger, E., ...
We present the discovery of radio afterglow emission from the high-redshift (z = 6.295) burst GRB 050904. The peak flux density for this burst is similar to typical low-redshift gamma-ray bursts...
Soderberg, A. M., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., Kulkarni, S. R., ...
We present detailed optical, near-infrared, and radio observations of the X-ray flash 050416a obtained with Palomar and Siding Springs Observatories as well as HST and the VLA, placing this event...
SN 2004A: another Type II-P supernova with a red supergiant progenitor (2006)
Henrdy, M. A., Smartt, S. J., Crockett, R. M., Maund, J. R., Gal-Yam, A., ...
We present a monitoring study of SN 2004A and probable discovery of a progenitor star in pre-explosion Hubble Space Telescope (HST) images. The photometric and spectroscopic monitoring of SN 2004A...
An Energetic Afterglow From A Distant Stellar Explosion (2006)
Frail, D. A., Cameron, P. B., Kasliwal, M., Nakar, E., Price, P. A., Berger, E., ...
We present the discovery of radio afterglow emission from the high redshift (z=6.295) burst GRB 050904. The peak flux density for this burst is similar to typical low-redshift gamma-ray bursts (GRB)....
Relativistic ejecta from XRF 060218 and the rate of cosmic explosions (2006)
Soderberg, A. M., Kulkarni, S. R., Nakar, E., Berger, E., Fox, D. B., Frail, D. A., ...
Over the last decade, long-duration gamma-ray bursts (GRBs) including the subclass of X-ray flashes (XRFs) have been revealed to be a rare variety of Type Ibc supernova (SN). While all these events...
SN 2004A: Another Type II-P Supernova with a Red Supergiant Progenitor (2006)
Hendry, M. A., Smartt, S. J., Crockett, R. M., Maund, J. R., Gal-Yam, A., ...
We present a monitoring study of SN 2004A and probable discovery of a progenitor star in pre-explosion HST images. The photometric and spectroscopic monitoring of SN 2004A show that it was a normal...
A photometric redshift of z = 6.39 0.12 for GRB 050904 (2006)
Haislip, J.B., Nysewander, M.C., Reichart, D., Levan, A., Tanvir, N., Cenko, S.B., ...
The Afterglow, Energetics and Host Galaxy of the Short-Hard Gamma-Ray Burst 051221a (2006)
Soderberg, A. M., Berger, E., Kasliwal, M., Frail, D. A., Price, P. A., Schmidt, B. P., ...
We present detailed optical, X-ray and radio observations of the bright afterglow of the short gamma-ray burst 051221a obtained with Gemini, Swift/XRT, and the Very Large Array, as well as optical...
A photometric redshift of z = 6.39 ¿ 0.12 for GRB 050904 (2006)
Haislip, J.B., Nysewander, M.C., Reichart, D.E., Levan, A.J., Tanvir, N., Cenko, S.B., ...
Gamma-ray bursts (GRBs) and their afterglows are the most brilliant transient events in the Universe. Both the bursts themselves and their afterglows have been predicted to be visible out to...
Potential Direct Single-Star Mass Measurement (2005)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts (2005)
Fox, D. B., Frail, D. A., Price, P. A., Kulkarni, S. R., Berger, E., Piran, T., ...
The final chapter in the long-standing mystery of the gamma-ray bursts (GRBs) centres on the origin of the short-hard class, suspected on theoretical grounds to result from the coalescence of neutron...
Discovery and identification of the very high redshift afterglow of GRB 050904 (2005)
Haislip, J., Nysewander, M., Reichart, D., Levan, A., Tanvir, N., Cenko, S., ...
In 2000, Lamb and Reichart predicted that gamma-ray bursts (GRBs) and their afterglows occur in sufficient numbers and at sufficient brightnesses at very high redshifts (z > 5) to eventually replace...
The afterglow and elliptical host galaxy of the short gamma-ray burst GRB 050724 (2005)
Berger, E., Price, P. A., Cenko, S. B., Gal-Yam, A., Soderberg, A. M., Kasliwal, M., ...
Despite a rich phenomenology, gamma-ray bursts (GRBs) are divided into two classes based on their duration and spectral hardness -- the long-soft and the short-hard bursts. The discovery of afterglow...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2005)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
A high angular-resolution search for the progenitor of the type Ic Supernova 2004gt (2005)
Gal-Yam, A., Fox, D. B., Kulkarni, S. R., Matthews, K., Leonard, D. C., Sand, D. J., ...
We report the results of a high-spatial-resoltion search for the progenitor of type Ic supernova SN 2004gt, using the newly commissioned Keck laser-guide star adaptive optics system (LGSAO) along...
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2005)
Rattenbury, N. J., Abe, F., Bennett, D. P., Bond, I. A., Calitz, J. J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
An Asymmetric, Energetic Type Ic Supernova Viewed Off-Axis, and a Link to Gamma-Ray Bursts (2005)
Mazzali, P. A., Kawabata, K. S., Maeda, K., Nomoto, K., Filippenko, A. V., Ramirez-Ruiz, E., ...
Type Ic supernovae, the explosions following the core collapse of massive stars that have previously lost their hydrogen and helium envelopes, are particularly interesting because of the link with...
The Afterglows, Redshifts, and Properties of Swift Gamma-Ray Bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow up of sixteen Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data...
An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006 (2005)
Soderberg, A. M., Kulkarni, S. R., Price, P. A., Fox, D. B., Berger, E., ...
We present the results from a {\it Hubble Space Telescope/ACS} study of the supernovae associated with gamma-ray bursts 040924 ($z=0.86$) and 041006 ($z=0.71$). We find evidence that both GRBs were...
An HST Search for Supernovae Accompanying X-ray Flashes (2005)
Soderberg, A. M., Kulkarni, S. R., Fox, D. B., Berger, E., Price, P. A., Cenko, S. B., ...
We present the results from an Hubble Space Telescope/ACS search for supernovae associated with X-ray flashes 020903, 040701, 040812 and 040916. We find strong evidence that XRF 020903 (z=0.25) was...
The Discovery of the Optical and Near-IR Afterglows of the First Swift Gamma-Ray Bursts (2005)
Berger, E., Fox, D. B., Kulkarni, S. R., Krzeminski, W., Soderberg, A. M., Frail, D. A., ...
We present optical and near-infrared searches for afterglow emission from the first four Swift bursts with accurate positions from the X-ray Telescope (XRT). Using telescopes at Las Campanas, Keck,...
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2005)
Rattenbury, N.J., Abe, F., Bennett, D.P., Bond, I.A., Calitz, J.J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
Determination of stellar shape in microlensing event MOA 2002-BLG-33 (2005)
Rattenbury, N.J., Abe, F., Bennett, D.P., Bond, I.A., Calitz, J.J., Claret, A., ...
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
Afterglows, redshifts, and properties of swift gammaray bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M.., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A, Jaroszynski, M, Paczynski, B, Kubiak, M, Szymanski, MK, Soszynski, I, ...
Afterglows, redshifts, and properties of swift gammaray bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M.., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
Afterglows, Redshifts, and Properties of Swift Gamma-Ray Bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
The Caltech Core-Collapse Project (CCCP) (2004)
Gal-Yam, A., Cenko, S. B., Fox, D. W., Leonard, D. C., Sand, D. J., ...
The cosmological utility of type Ia Supernovae (SNe) prompted numerous studies of these events, and they are now well characterized observationally, both as individual objects and as a population. In...
Search for Low-Mass Exoplanets by Gravitational Microlensing at High Magnification (2004)
Abe, F., Bennett, D. P., Bond, I. A., Eguchi, S., Furuta, Y., Hearnshaw, J. B., ...
Observations of the gravitational microlensing event MOA 2003-BLG-32/OGLE 2003-BLG-219 are presented for which the peak magnification was over 500, the highest yet reported. Continuous observations...
The sub-energetic gamma-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425 (2004)
Soderberg, AM, Kulkarni, SR, Berger, E, Fox, DW, Sako, M, Frail, DA, ...
Over the six years since the discovery(1) of the gamma-ray burst GRB 980425, which was associated(2) with the nearby ( distance similar to40 Mpc) supernova 1998bw, astronomers have debated fiercely...
The sub-energetic GRB 031203 as a cosmic analogue to GRB 980425 (2004)
Soderberg, A. M., Kulkarni, S. R., Berger, E., Fox, D. W., Sako, M., Frail, D. A., ...
Over the six years since the discovery of the gamma-ray burst GRB 980425, associated with the nearby (distance, ~40 Mpc) supernova 1998bw, astronomers have fiercely debated the nature of this event....
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\tilde r_E \theta_E and...
The J-band Light Curve of SN 2003lw, Associated with GRB 031203 (2004)
Gal-Yam, A., Fox, D. B., Soderberg, A. M., Kulkarni, S. R., Berger, E., ...
At z=0.1055, the gamma-ray burst GRB 031203 is one of the two nearest GRBs known. Using observations from the Very Large Array (VLA) and Chandra X-ray Observatory, we derive sub-arcsecond...
Yoo, Jaiyul, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
We develop a new method of modeling microlensing events based on a Monte Carlo simulation that incorporates both a Galactic model and the constraints imposed by the observed characteristics of the...
Potential Direct Single-Star Mass Measurement (2004)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
Potential Direct Single-Star Mass Measurement (2004)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, G, DePoy, DL, Gal-Yam, A, Gaudi, BS, Gould, A, Han, C, ...
Potential Direct Single-Star Mass Measurement (2004)
Ghosh, H, DePoy, DL, Gal-Yam, A, Gaudi, BS, Gould, A, Han, C, ...
The detailed optical light curve of GRB 030329 (2003)
Lipkin, Y. M., Ofek, E. O., Gal-Yam, A., Leibowitz, E. M., Poznanski, D., Kaspi, S., ...
(Abridged) We present densely sampled BVRI light curves of the optical transient associated with the gamma-ray burst GRB 030329, the result of a coordinated observing campaign conducted at five...
Probing the atmosphere of a solar-like star by galactic microlensing at high magnification (2003)
Abe, F., Bennett, D. P., Bond, I. A., Calitz, J. J., Claret, A., Cook, K. H., ...
We report a measurement of limb darkening of a solar-like star in the very high magnification microlensing event MOA 2002-BLG-33. A 15 hour deviation from the light curve profile expected for a...
OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens (2003)
Yoo, Jaiyul, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
We analyze OGLE-2003-BLG-262, a relatively short, t_E=12.5+-0.1day, microlensing event generated by a point-mass lens transiting the face of a K giant source in the Galactic bulge. We use the...
Supernovae in Galaxy Clusters (2003)
Gal-Yam, A., Maoz, D., Sharon, K., Prada, F., Guhathakurta, P., Filippenko, A. V.
We present the results of several surveys for supernovae (SNe) in galaxy clusters. SNe discovered in deep, archival HST images were used to measure the cluster SN Ia rate to z=1. A search for SNe in...
Hubble Space Telescope and Ground-Based Optical and Ultraviolet Observations of GRB010222 (2003)
Galama, T. J., Reichart, D., Brown, T. M., Kimble, R. A., Price, P. A., Berger, E., ...
We report on Hubble Space Telescope WFPC2 optical and STIS near ultraviolet MAMA observations, and ground-based optical observations of GRB010222, spanning 15 hrs to 71 days. The observations are...
Discovery of GRB 020405 and its Late Red Bump (2002)
Price, P. A., Kulkarni, S. R., Berger, E., Fox, D. W., Bloom, J. S., Djorgovski, S. G., ...
We present the discovery of GRB 020405 made with the Inter-Planetary Network (IPN). With a duration of 60 s, the burst appears to be a typical long duration event. We observed the 75-square acrminute...
Multi-Color Observations of the GRB000926 Afterglow (2000)
Price, P. A., Harrison, F. A., Galama, T. J., Reichart, D. E., Axelrod, T. S., Berger, E. J., ...
We present multi-color light-curves of the optical afterglow of GRB 000926. Beginning ~1.5 days after the burst, the light-curves of this GRB steepen measurably. The existence of such achromatic...
Afterglows, redshifts, and properties of Swift gamma-ray bursts
Berger, E, Kulkarni, SR, Fox, DB, Soderberg, AM, Harrison, FA, Nakar, E, ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...