Masetti, N., Parisi, P., Palazzi, E., Jimenez-Bailon, E., Morelli, L., Chavushyan, V., ...
Within the framework of our program of assessment of the nature of unidentified or poorly known INTEGRAL sources, we here present spectroscopy of optical objects, selected through positional...
Epeak estimator for Gamma-Ray Bursts Observed by the Swift Burst Alert Telescope (2008)
Sakamoto, T., Sato, G., Barbier, L., Barthelmy, S. D., Cummings, J. R., Fenimore, E. E., ...
We report a correlation based on a spectral simulation study of the prompt emission spectra of gamma-ray bursts (GRBs) detected by the Swift Burst Alert Telescope (BAT). The correlation is between...
Landi, R., Stephen, J. B., Masetti, N., Grupe, D., Capitanio, F., Bird, A. J., ...
The third INTEGRAL/IBIS survey has revealed several new hard X-ray sources, which are still unclassified. To identify these sources, we need to find their counterparts at other wavelengths and then...
GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission (2008)
Perley, D. A., Metzger, B. D., Granot, J., Butler, N. R., Sakamoto, T., Ramirez-Ruiz, E., ...
We report on observations of GRB 080503, a short gamma-ray burst with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with a thorough...
Sidoli, L., Romano, P., Cusumano, G., Mangano, V., Vercellone, S., Paizis, A., ...
Supergiant Fast X-ray Transients (SFXTs) are a sub-class of High Mass X-ray Binaries (HMXBs) associated with OB supergiant companions and displaying transient X-ray activity. This behaviour is quite...
Prompt optical observations of GRB 080330 and GRB 080413A (2008)
Yuan, F., Rykoff, E. S., Schaefer, B. E., Rujopakarn, W., Güver, T., Aharonian, F., ...
We report on the results of rapid responses to GRB 080330 and GRB 080413A by the ROTSE-IIIb and ROTSE-IIIc telecopes. In both cases, optical follow-up started during the prompt emission phase and...
The efficient low-mass Seyfert MCG-05-23-016 (2008)
Beckmann, V., Courvoisier, T. J. -L., Gehrels, N., Lubinski, P., Malzac, J., ...
The Seyfert 1.9 galaxy MCG-05-23-016 has been shown to exhibit a complex X-ray spectrum. This source has moderate X-ray luminosity, hosts a comparably low-mass black hole, but accretes at a high...
Broad-band X-ray spectral evolution of GX 339-4 during a state transition (2008)
Del Santo, M., Belloni, T. M., Homan, J., Bazzano, A., Casella, P., Fender, R. P., ...
We report on X-ray and soft gamma-ray observations of the black-hole candidate GX 339-4 during its 2007 outburst, performed with the RXTE and INTEGRAL satellites. The hardness-intensity diagram of...
Sidoli, L., Romano, P., Mangano, V., Cusumano, G., Vercellone, S., Kennea, J. A., ...
IGR J17544-2619 and XTE J1739-302 are considered the prototypical sources of the new class of High Mass X-ray Binaries, the Supergiant Fast X-ray Transients (SFXTs).These sources were observed during...
The Swift BAT X-Ray survey. III. X-Ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
In this concluding part of the series of three papers dedicated to the Swift BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample....
The Swift BAT X-ray survey - III. X-ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
Cygnus X-3 transition from the ultrasoft to the hard state (2007)
Beckmann, V., Soldi, S., Bélanger, G., Brandt, S., Caballero-García, M. D., De Cesare, G., ...
Exploring broadband GRB behavior during gamma-ray emission (2007)
Yost, S. A., Swan, H. F., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Alday, A., ...
The dark side of ROTSE-III prompt GRB observations (2007)
Yost, S. A., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Barthelmy, S., Gehrels, N., ...
Swift ultraviolet photometry of the Deep Impact encounter with Comet 9P/Tempel 1 (2007)
Mason, K. O., Chester, M., Cucchiara, A., Gronwall, C., Grupe, D., Hunsberger, S, ...
Exploring Broadband GRB Behavior During gamma-ray Emission (2006)
Yost, S. A., Swan, H. F., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Alday, A., ...
The robotic ROTSE-III telescope network detected prompt optical emission contemporaneous with the gamma-ray emission of Swift events GRB051109A and GRB051111. Both datasets have continuous coverage...
Swift Discovery of Gamma-Ray Bursts without Jet Break Feature in their X-Ray Afterglows (2006)
Sato, G., Yamazaki, R., Ioka, K., Sakamoto, T., Takahashi, T., Nakazawa, K., ...
We analyze Swift gamma-ray bursts (GRBs) and X-ray afterglows for three GRBs with spectroscopic redshift determinations -- GRB 050401, XRF 050416a, and GRB 050525a. We find that the relation between...
Long-term monitoring of the X-ray afterglow of GRB 050408 with Swift/XRT (2006)
Capalbi, M., Malesani, D., Perri, M., Giommi, P., Covino, S., Cusumano, G., ...
We present observations of the X-ray afterglow of GRB 050408, a gamma-ray burst discovered by HETE-II. Swift began observing the field 42 min after the burst, performing follow-up over a period of 38...
Gehrels, N., Norris, J. P., Mangano, V., Barthelmy, S. D., Burrows, D. N., Granot, J., ...
Gamma ray bursts (GRBs) are known to come in two duration classes, separated at ~2 s. Long bursts originate from star forming regions in galaxies, have accompanying supernovae (SNe) when near enough...
Swift observations of GRB050712 (2006)
De Pasquale, M., Grupe, D., Poole, T. S., Breeveld, A. A., Zane, S., Rosen, S. R., ...
We present the results of X-ray and optical observations of GRB050712 performed by Swift. The X-ray lightcurve of this burst exhibits episodes of flares in the first 1000s, the same epoch at which...
Hypernova Signatures in the Late Rebrightening of GRB 050525A (2006)
Della Valle, M., Malesani, D., Bloom, J. S., Benetti, S., Chincarini, G., D'Avanzo, P., ...
We report observations of GRB 050525A, for which a Gemini North spectrum shows its redshift to be z = 0.606. This is the third closest long GRB discovered by Swift. We observed its afterglow using...
Antonelli, L. A., Testa, V., Romano, P., Guetta, D., Torii, K., Elia, V. D, ...
Context. GRB050721 was detected by Swift and promptly followed-up, in the X-ray by Swift itself and, in the optical band, by the VLT operated, for the first time, in rapid response mode. A...
Prompt optical observations of GRB 050319 with the Swift UVOT (2006)
Mason, K.O., Blustin, A.J., Boyd, P., Holland, S.T., Page, M.J., Roming, P., ...
The UVOT telescope on the Swift observatory has detected optical afterglow emission from GRB 050319. The flux declines with a power law slope of alpha = -0.57 between the start of observations some...
Swift panchromatic observations of the bright gamma‐ray burst GRB 050525a (2006)
Blustin, A.J., Band, D., Barthelmy, S., Boyd, P., Capalbi, M., Holland, S.T., ...
The bright gamma-ray burst GRB 050525a has been detected with the Swift observatory, providing unique multiwavelength coverage from the very earliest phases of the burst. The X-ray and optical/UV...
The frontier of darkness: the cases of GRB 040223, GRB 040422, GRB 040624 (2006)
D'Avanzo, P., Filliatre, P., Goldoni, P., Antonelli, L. A., Campana, S., Chincarini, G., ...
Understanding the reasons for the faintness of the optical/near-infrared afterglows of the so-called dark bursts is essential to assess whether they form a subclass of GRBs, and hence for the use of...
The Anomalous Early Afterglow of GRB 050801 (2006)
Rykoff, E.S., Aharonian, F., Akerlof, C. W., Mangano, V., Ashley, M. C. B., Güver, T., ...
The ROTSE-IIIc telescope at the HESS site, Namibia, obtained the earliest detection of optical emission from a gamma-ray burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The...
The INTEGRAL mission - an overview (2006)
Kretschmar, P., Winkler, C., Courvoisier, T.J.-L., Di Cocco, G., Diehl, R., Gehrels, N., ...
The INTEGRAL mission - an overview (2006)
Kretschmar, P., Winkler, C., Courvoisier, T.J.-L., Di Cocco, G., Diehl, R., Gehrels, N., ...
Swift X-Ray Telescope Observations of the Deep Impact Collision (2006)
Willingale, R., O'Brien, P. T., Cowley, S. W. H., Jones, G. H., McComas, D. J., Mason, K. O., ...
SWIFT/BAT detections of hard X-ray sources: IV (2006)
Ajello, M., Greiner, J., Rau, A., Barthelmy, S., Kennea, J. A., Falcone, A., ...
GRB 060204A: Swift/UVOT observations (2006)
Cucchiara, A., Fox, D., Hunsberger, S., Retter, A., Nousek, J., Voges, W., ...
GRB 060425: IPN localization and KW spectrum of a short, hard burst (2006)
Cummings, J., Barthelmy, S., Gehrels, N., Krimm, H., Golenetskii, S., Aptekar, R., ...
Bright short hard GRB 060303: IPN localization and Konus spectrum (2006)
Golenetskii, S., Aptekar, R., Mazets, E., Pal'shin, V., Frederiks, D., Cline, T., ...
GRB 060427B: IPN localization of a short hard burst (2006)
Golenetskii, S., Aptekar, R., Mazets, E., Pal'shin, V., Frederiks, D., Hurley, K., ...
GRB 060105: BAT refined analysis (2006)
Markwardt, C., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., ...
GRB060206: Swift XRT refined analysis (2006)
Morris, D., Burrows, D., Gehrels, N., Greiner, J., Hinshaw, D.
BAT GRB 060204C is probably not a GRB (2006)
Sakamoto, T., Barbier, L., Barthelmy, S., Boyd, P., Cummings, J., Fenimore, E., ...
GRB 060213: IPN localization (2006)
Pal'shin, V., Golenetskii, S., Aptekar, R., Mazets, E., Frederiks, D., Hurley, K., ...
The Giant X-ray Flare of GRB 050502B: Evidence for Late-Time Internal Engine Activity (2005)
Falcone, A. D., Burrows, D. N., Lazzati, D., Campana, S., Kobayashi, S., Zhang, B., ...
Until recently, X-ray flares during the afterglow of gamma ray bursts (GRBs) were a rarely detected phenomenon, thus their nature is unclear. During the afterglow of GRB 050502B, the largest X-ray...
Swift and XMM observations of the dark GRB 050326 (2005)
Moretti, A., De Luca, A., Malesani, D., Campana, S., Tiengo, A., Cucchiara, A., ...
We present Swift and XMM observations of GRB 050326, detected by Swift-BAT. The fluence was 7.7x10^-6 erg cm^-2 (20-150 keV), and its spectrum was hard, with a power law photon index 1.25. The...
Swift observations of the X-ray bright GRB 050315 (2005)
Vaughan, S., Goad, M. R., Beardmore, A. P., O'Brien, P. T., Osborne, J. P., Page, K. L., ...
This paper discusses Swift observations of the gamma-ray burst GRB 050315 (z=1.949) from 80 s to 10 days after the onset of the burst. The X-ray light curve displayed a steep early decay (t^-5) for...
Optical emission from GRB 050709: a short/hard GRB in a star forming galaxy (2005)
Covino, S., Malesani, D., Israel, G. L., D'Avanzo, P., Antonelli, L. A., Chincarini, G., ...
We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is...
Bright X-ray Flares in Gamma-Ray Burst Afterglows (2005)
Burrows, D. N., Romano, P., Falcone, A., Kobayashi, S., Zhang, B., Moretti, A., ...
Gamma-ray burst (GRB) afterglows have provided important clues to the nature of these massive explosive events, providing direct information on the nearby environment and indirect information on the...
Filliatre, P., D'Avanzo, P., Covino, S., Malesani, D., Tagliaferri, G., McGlynn, S., ...
GRB 040422 was detected by the INTEGRAL satellite at an angle of only 3 degrees from the Galactic plane. Analysis of the prompt emission observed with the SPI and IBIS instruments on INTEGRAL are...
Erratum: The Swift Gamma-Ray Burst Mission (2005)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
GRB050715: Refined analysis of the Swift-BAT burst (2005)
Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., Gehrels, N., Greiner, J., ...
GRB050925: Swift/XRT limits (2005)
Beardmore, A. P., Page, K. L., Gehrels, N., Greiner, J., Kennea, J., Nousek, J., ...
Swift/UVOT photometry of GRB050820 (2005)
Chester, M., Page, M., Roming, P., Marshall, F., Boyd, P., Angelini, L., ...
GRB 050712: Swift XRT afterglow position (2005)
Falcone, A., Burrows, D. N., Morris, D. C., Grupe, D., Racusin, J. L., Nousek, J. A., ...
GRB 050603: Swift-BAT refined analysis of a long three-spiked burst (2005)
Fenimore, E., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Gehrels, N., ...
GRB 051109: Swift-BAT refined analysis (2005)
Fenimore, E., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Gehrels, N., ...
Swift-BAT trigger 155072 is probably not a GRB (2005)
Greiner, J., Beardmore, A., Burrows, D. N., Chester, M., Cummings, J., Gehrels, N., ...
GRB 051006: Swift/UVOT upper limits (2005)
Holland, S. T., Norris, J., Greiner, J., Hinshaw, D., Gehrels, N.
GRB 050306: Confirmation of X-ray afterglow (2005)
Mangano, V., Cusumano, G., Mineo, T., Perri, M., Giommi, P., Capalbi, M., ...