Luminosity functions of LMXBs in Centaurus A: globular clusters versus the field (2009)
Voss, Rasmus, Gilfanov, Marat, Sivakoff, Gregory R., Kraft, Ralph P., Jordan, Andres, Raychaudhury, Somak, ...
Sivakoff, Gregory R., Jordán, Andrés, Juett, Adrienne M., Sarazin, Craig L., Irwin, Jimmy A.
Chandra X-ray observations routinely resolve tens to hundreds of low-mass X-ray binaries (LMXBs) per galaxy in nearby massive early-type galaxies. These studies have raised important issues regarding...
Sivakoff, Gregory R., Jord'an, Andrés, Juett, Adrienne M., Sarazin, Craig L., Irwin, Jimmy A.
Multi-epoch Chandra X-ray observations of nearby massive early-type galaxies open up the study of an important regime of low-mass X-ray binary (LMXB) behavior -- long term variability. In a companion...
A Transient Black-Hole Low-Mass X-Ray Binary Candidate in Centaurus A (2008)
Sivakoff, Gregory R., Kraft, Ralph P., Jordán, Andrés, Juett, Adrienne M., Evans, Daniel A., Forman, William R., ...
We report the discovery of a bright transient X-ray source, CXOU J132518.2-430304, towards Centaurus A (Cen A) using six new Chandra X-Ray Observatory observations in 2007 March--May. Between 2003...
2 European Southern Observatory, Karl-Schwarzschild-Str. 2 (2008)
G. Fabbiano, Gregory R. Sivakoff, Andrés Jordán, Adrienne M. Juett, Craig L. Sarazin, ...
Abstract. Chandra observations of early-type galaxies have resolved large populations of lowmass X-ray binaries (LMXBs) in early-type galaxies. The majority of these observations have been snapshots...
Variable Low-Mass X-ray Binaries in Early-Type Galaxies (2007)
Sivakoff, Gregory R., Jordán, Andrés, Juett, Adrienne M., Sarazin, Craig L., Irwin, Jimmy A.
As the Chandra X-ray Observatory mission matures, increasing numbers of nearby galaxies are being observed multiple times, sampling the variability of extragalactic X-ray binaries on timescales...
Low-Mass X-ray Binaries and Globular Clusters in Centaurus A (2007)
Jordan, Andres, Sivakoff, Gregory R., McLaughlin, Dean E., Blakeslee, John P., Evans, Daniel A., Kraft, Ralph P., ...
We present results of Hubble Space Telescope and Chandra X-ray Observatory observations of globular clusters (GCs) and low-mass X-ray binaries (LMXBs) in the central regions of Centaurus A. Out of...
A Chandra Observation of Abell 13: Investigating the Origin of the Radio Relic (2007)
Juett, Adrienne M., Sarazin, Craig L., Clarke, Tracy E., Andernach, Heinz, Ehle, Matthias, Fujita, Yutaka, ...
We present results from the Chandra X-ray observation of Abell 13, a galaxy cluster that contains an unusual noncentral radio source, also known as a radio relic. This is the first pointed X-ray...
The cold neutron star in the soft X-ray transient 1H 1905+000 (2007)
Jonker, Peter G., Steeghs, Daniel, Chakrabarty, Deepto, Juett, Adrienne M.
We report on our analysis of 300 ks of Chandra observations of the neutron star soft X-ray transient 1H1905+000 in quiescence. We do not detect the source down to a 95% confidence unabsorbed flux...
Andrés Jordán, Gregory R. Sivakoff, Dean E. Mclaughlin, John P. Blakeslee, Daniel A. Evans, Ralph P. Kraft, ...
We present results of Hubble Space Telescope and Chandra X-Ray Observatory observations of globular clusters (GCs) and low-mass X-ray binaries (LMXBs) in the central regions of Centaurus A. Out of...
High-resolution X-ray spectroscopy of the ultracompact LMXB pulsar 4U 1626-67 (2006)
Krauss, Miriam I., Schulz, Norbert S., Chakrabarty, Deepto, Juett, Adrienne M., Cottam, Jean
[abridged] We report results from four recent observations of the ultracompact LMXB pulsar 4U 1626-67. All the observations obtained high-resolution X-ray spectra of the system, two from the Chandra...
Sivakoff, Gregory R., Jordán, Andrés, Sarazin, Craig L., Blakeslee, John P., E}, Patrick C{\^ O}t{\', Ferrarese, Laura, ...
(Abridged) Chandra and Hubble ACS observations of 11 early-type galaxies probe the low-mass X-ray binary (LMXB) - globular cluster (GC) connection. We explore the optical properties of 270 GCs with...
Juett, Adrienne M., Schulz, Norbert S., Chakrabarty, Deepto, Gorczyca, Thomas W.
We present high-resolution spectroscopy of the neon K-shell and iron L-shell interstellar absorption edges in nine X-ray binaries using the High Energy Transmission Grating Spectrometer (HETGS)...
Juett, Adrienne M., Chakrabarty, Deepto
We present the high-resolution Chandra X-ray Observatory persistent (non-dip) spectrum of 4U 1916-05 which revealed narrow absorption lines from hydrogenic neon, magnesium, silicon, and sulfur, in...
Gregory R. Sivakoff, Andrés Jordán, Craig L. Sarazin, John P. Blakeslee, Patrick Côté, Laura Ferrarese, ...
LMXBs form efficiently in GCs. By combining Chandra and HST ACS observations of 11 massive early-type galaxies in the Virgo Cluster, we use the most accurate identification of LMXBs and GCs to date...
Krauss, Miriam I., Wang, Zhongxiang, Dullighan, Allyn, Juett, Adrienne M., Kaplan, David L., Chakrabarty, Deepto, ...
We report the precise optical and X-ray localization of the 3.2 ms accretion-powered X-ray pulsar XTE J1814-338 with data from the Chandra X-Ray Observatory as well as optical observations conducted...
On the Nature of X-ray Sources in Early-Type Galaxies (2005)
We show that the observed relationship between the fraction of low-mass X-ray binaries (LMXBs) found in globular clusters (GCs) and the GC-specific frequency for early-type galaxies is consistent...
X-ray Spectroscopy of Candidate Ultracompact X-ray Binaries (2005)
Juett, Adrienne M., Chakrabarty, Deepto
We present high-resolution spectroscopy of the neutron star/low-mass X-ray binaries (LMXBs) 4U 1850-087 and 4U 0513-40 as part of our continuing study of known and candidate ultracompact binaries....
Juett, Adrienne M., Schulz, Norbert S., Chakrabarty, Deepto
(Abbrev.) We present high-resolution spectroscopy of the oxygen K-shell interstellar absorption edge in 7 X-ray binaries using the HETGS onboard Chandra. Using the brightest sources as templates, we...
X-ray Spectroscopy of the Accreting Millisecond Pulsar XTE J0929-314 in Outburst (2002)
Juett, Adrienne M., Galloway, Duncan K., Chakrabarty, Deepto
We present the high-resolution spectrum of the accretion-powered millisecond pulsar XTE J0929-314 during its 2002 outburst, measured using the Low Energy Transmission Grating Spectrometer onboard the...
The X-Ray Position and Infrared Counterpart of the Eclipsing X-Ray Pulsar OAO 1657-415 (2002)
Chakrabarty, Deepto, Wang, Zhongxiang, Juett, Adrienne M., Lee, Julia C., Roche, Paul
We have measured the precise position of the 38-s eclipsing X-ray pulsar OAO 1657-415 with the Chandra X-Ray Observatory: RA = 17h00m48.90s, Dec = -41d39m21.6s, equninox J2000, error radius = 0.5...
Chandra High-Resolution Spectrum of the Anomalous X-ray Pulsar 4U 0142+61 (2002)
Juett, Adrienne M., Marshall, Herman L., Chakrabarty, Deepto, Schulz, Norbert S.
We report on a 25 ks observation of the 8.7 s anomalous X-ray pulsar 4U~0142+61 with the High Energy Transmission Grating Spectrometer (HETGS) on the Chandra X-ray Observatory. The continuum spectrum...
Chandra/HETGS Spectroscopy of the Anomalous X-ray Pulsar 4U 0142+61 (2001)
Juett, Adrienne M., Marshall, Herman L., Chakrabarty, Deepto, Canizares, Claude R., Schulz, Norbert S.
We report on a 25 ks observation of the anomalous X-ray pulsar 4U 0142+61 with the High Energy Transmission Grating Spectrometer (HETGS) on the Chandra X-ray Observatory. The continuum spectrum is...
Ultracompact X-Ray Binaries with Neon-Rich Degenerate Donors (2001)
Juett, Adrienne M., Psaltis, Dimitrios, Chakrabarty, Deepto
There are three low-mass X-ray binaries (4U 0614+091, 2S 0918-549, and 4U 1543-624) for which broad line emission near 0.7 keV was previously reported. A recent high-resolution observation of 4U...