14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Goddard Space Flight CenterUS361 papers
- Marshall Space Flight CenterUS357 papers
- Centre National de la Recherche ScientifiqueFR280 papers
- Max Planck Institute for Extraterrestrial PhysicsDE240 papers
- University of Maryland, College ParkUS239 papers
- Universities Space Research AssociationUS214 papers
- Stanford UniversityUS212 papers
- National Institute for AstrophysicsIT196 papers
- University of Rome Tor VergataIT184 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR179 papers
- University of PaduaIT178 papers
- Istituto Nazionale di Fisica Nucleare, Roma Tor VergataIT175 papers
40 papers · 2 filters
The Outbursts and Orbit of the Accreting Pulsar GS 1843-02 = 2S 1845-024
Mark H. Finger, Lars Bildsten, Deepto Chakrabarty +5
We present observations of a series of 10 outbursts of pulsed hard X-ray flux from the transient 10.6 mHz accreting pulsar GS 1843-02, using the Burst and Transient Source Experime…
Strong Aperiodic X-ray Variability and Quasi-Periodic Oscillation in X-ray Nova XTE J1550-564
Wei Cui, S. N. Zhang, Wan Chen +1
We report the discovery of strong aperiodic X-ray variability and quasi-periodic oscillation (QPO) in the X-ray light curves of a new X-ray Nova, XTE J1550-564, and the evolution o…
Measurement of Hard Lags and Coherences in the X-Ray Flux of Accreting Neutron Stars and Comparison with Accreting Black Holes
Eric C. Ford, Michiel van der Klis, Mariano Mendez +2
Using the Rossi X-ray Timing Explorer we have measured lags of the 9 to 33 keV photons relative to the 2 to 9 keV photons in the timing noise between 0.01 and 100 Hz in the accreti…
The Ulysses Supplement to the BATSE 4Br Catalog of Cosmic Gamma-Ray Bursts
K. Hurley, M. S. Briggs, R. M. Kippen +5
We present Interplanetary Network localization information for 147 gamma-ray bursts observed by the Burst and Transient Source Experiment between the end of the 3rd BATSE catalog a…
The Ulysses Supplement to the BATSE 3B Catalog of Cosmic Gamma-Ray Bursts
K. Hurley, M. S. Briggs, R. M. Kippen +5
We present Interplanetary Network localization information for 218 gamma-ray bursts in the 3rd BATSE catalog, obtained by analyzing the arrival times of these bursts at the Ulysses…
No Evidence for Gamma-Ray Burst/Abell Cluster or Gamma- Ray Burst/Radio-Quiet Quasar Correlations
K. Hurley, D. H. Hartmann, C. Kouveliotou +4
We examine the recent claims that cosmic gamma-ray bursts are associated with either radio-quiet quasars or Abell clusters. These associations were based on positional coincidences…
Reactivation and Precise IPN Localization of the Soft Gamma Repeater SGR1900+14
K. Hurley, C. Kouveliotou, P. Woods +5
In 1998 May, the soft gamma repeater SGR1900+14 emerged from several years of quiescence and emitted a series of intense bursts, one with a time history unlike any previously obser…
ASCA Discovery of an X-ray Pulsar in the Error Box of SGR1900+14
K. Hurley, P. Li, C. Kouveliotou +9
We present a 2 - 10 keV ASCA observation of the field around the soft gamma repeater SGR1900+14. One quiescent X-ray source was detected in this observation, and it was in the SGR…
Dependence of the Frequency of the Kilohertz Quasi-Periodic Oscillations on X-ray Count Rate and Colors in 4U 1608-52
Mariano Mendez, Michiel van der Klis, Eric C. Ford +2
We present new results based on observations carried out with the Rossi X-ray Timing Explorer during the decay of an outburst of the low-mass X-ray binary (LMXB) and atoll source 4…
X-Ray Spectral Behavior of the Relativistic Jet Source Cygnus X-3
M. L. McCollough, C. R. Robinson, S. N. Zhang +13
Cyg X-3 is an unusual X-ray binary which shows remarkable correlative behavior between the hard X-ray, soft X-ray, and the radio. We present an analysis of these long term light cu…
Hard X-ray variability of the black-hole candidate GRO J0422+32 during its 1992 outburst
F. van der Hooft, C. Kouveliotou, J. van Paradijs +7
We have studied the hard X-ray variability of the soft X-ray transient GRO J0422+32 with BATSE in the 20-100 keV energy band. Our analysis covers 180 days following the first X-ray…
The eclipsing Cataclysmic Variable GS Pavonis: Evidence for disk radius changes
Paul J. Groot, Thomas Augusteijn, Orly Barziv +1
We have obtained differential time series photometry of the cataclysmic variable GS Pavonis over a timespan of 2 years. These show that this system is deeply eclipsing (~2-3.5 mag)…
Spectral Hardness Decay with Respect to Fluence in BATSE Gamma-Ray Bursts
A. Crider, E. P. Liang, R. D. Preece +5
We have analyzed the evolution of the spectral hardness parameter Epk as a function of fluence in gamma-ray bursts. We fit 41 pulses within 26 bursts with the trend reported by Lia…
Discovery of Correlated Behavior Between the HXR and the Radio Bands in Cygnus X-3
M. L. McCollough, C. R. Robinson, S. N. Zhang +8
Using CGRO/BATSE hard X-ray (HXR) data and GHz radio monitoring data from the Green Bank Interferometer (GBI), we have performed a long term study ( 1800 days) of the unusual…
Probing the Small-Scale Angular Distribution of Gamma-Ray Bursts with Combined BATSE/Ulysses 4B Locations
R. M. Kippen, K. Hurley, G. N. Pendleton
We investigate the angular distribution of gamma-ray bursts using the largest catalog of well-localized events that is currently available---combined BATSE/Ulysses burst locations.…
Discovery of a Second Kilohertz QPO in the X-ray Binary 4U 1735-44
Eric C. Ford, Michiel van der Klis, Jan van Paradijs +3
In recent observations with the Rossi X-Ray Timing Explorer we have detected two simultaneous quasi-periodic oscillation (QPO) peaks in the low mass X-ray binary and atoll source 4…
RXTE Observations of Cygnus X-3
M. L. McCollough, C. R. Robinson, S. N. Zhang +12
In the period between May 1997 and August 1997 a series of pointed RXTE observations were made of Cyg X-3. During this period Cyg X-3 made a transition from a quiescent radio state…
Non-thermal Origin of the EUV and Soft X-rays from the Coma Cluster - Cosmic Rays in Equipartition with the Thermal Medium
R. Lieu, W. -H. Ip, W. I. Axford +1
The role of cosmic rays (CR) in the formation and evolution of clusters of galaxies has been much debated. It may well be related to other fundamental questions, such as the mechan…
RXTE Observations of the Anomalous Pulsar 4U 0142+61
Colleen A. Wilson, Stefan Dieters, Mark H. Finger +2
We observed the anomalous X-ray pulsar 4U 0142+61 using the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE) in March 1996. The pulse frequency was me…
Discovery of a magnetar associated with the Soft Gamma Repeater SGR 1900+14
Chryssa Kouveliotou, Tod Strohmayer, Kevin Hurley +6
The soft-gamma repeater SGR 1900+14 became active again on June 1998 after a long period of quiescence; it remained at a low state of activity until August 1998, when it emitted a…
Difference Frequency of Kilohertz QPOs Not Equal to Half the Burst Oscillation Frequency in 4U 1636-53
Mariano Mendez, Michiel van der Klis, Jan van Paradijs
We have analyzed data obtained during two observations with the Rossi X-ray Timing Explorer on January 5 and 8, 1997, of the low-mass X-ray binary (LMXB) and atoll source 4U 1636-5…
An asymmetric arcsecond radio jet from Circinus X-1
Robert Fender, Ralph Spencer, Tasso Tzioumis +4
In observations with the Australia Telescope Compact Array we have resolved the radio counterpart of the unusual X-ray binary Cir X-1 into an asymmetric extended structure on arcse…
The Synchrotron Shock Model Confronts a `Line of Death' in the BATSE Gamma-Ray Burst Data
R. D. Preece, M. S. Briggs, R. S. Mallozzi +3
The synchrotron shock model (SSM) for gamma-ray burst emission makes a testable prediction: that the observed low-energy power-law photon number spectral index cannot exceed -2/3 (…
Non-thermal Origin of the EUV and HEX Excess Emission of the Coma Cluster - the Nature of the Energetic Electrons
Torsten A. Ensslin, Richard Lieu, Peter L. Biermann
The excess in extreme-ultraviolet (EUV) radiation and high energy X-rays (HEX) of Coma may be modeled by power law spectra. Their origin could be inverse Compton (IC) emission by r…