• Publications
  • Influence
The Swift gamma-ray burst mission
TLDR
The Swift mission, scheduled for launch in 2004, is a multiwavelength observatory for gamma-ray burst astronomy. Expand
  • 2,380
  • 415
  • PDF
KHZ QUASIPERIODIC OSCILLATIONS IN LOW-MASS X-RAY BINARIES AS PROBES OF GENERAL RELATIVITY IN THE STRONG-FIELD REGIME
We consider the interpretation of a pair of kHz quasiperiodic oscillations (QPOs) in the Fourier spectra of two low-mass x-ray binaries, Sco X-1 and 4U1608-52, hosting an old accreting neutron star.Expand
  • 268
  • 28
  • PDF
Observation of X-ray lines from a gamma-ray burst (GRB991216): evidence of moving ejecta from the progenitor.
We report on the discovery of two emission features observed in the x-ray spectrum of the afterglow of the gamma-ray burst (GRB) of 16 December 1999 by the Chandra X-ray Observatory. These featuresExpand
  • 205
  • 16
  • PDF
Lense-Thirring Precession and Quasi-periodic Oscillations in Low-Mass X-Ray Binaries
Relativistic dragging of inertial frames around fast-rotating collapsed stars is substantial and can give rise to observable effects. We consider kHz quasi-periodic oscillation (QPO) sources,Expand
  • 221
  • 16
  • PDF
The Acceleration of Ultra--High-Energy Cosmic Rays in Gamma-Ray Bursts
UHECRs are roughly isotropic and attain very large energies, $E \gtrsim 3\times 10~{20} \; eV$. Conventional models fail to explain both facts. I show here that acceleration of UHECRs in GRBsExpand
  • 388
  • 14
  • PDF
Correlations in the Quasi-periodic Oscillation Frequencies of Low-Mass X-Ray Binaries and the Relativistic Precession Model
A remarkable correlation between the centroid frequencies of quasi-periodic oscillations (or peaked noise components) from low-mass X-ray binaries has been recently discovered by Psaltis, Belloni, &Expand
  • 247
  • 12
  • PDF
Illuminated, and Enlightened, by GRB 991216
We consider models for the generation of the emission line recently discovered in the X-ray afterglow spectrum of several bursts and, especially, of GRB 991216 observed by Chandra. These observationsExpand
  • 54
  • 7
  • PDF
The X-Ray Afterglow of the Gamma-Ray Burst of 1997 May 8:Spectral Variability and Possible Evidence of an Iron Line
We report the possible detection (99.3% of statistical significance) of redshifted iron line emission in the X-ray afterglow of gamma-ray burst GRB 970508 observed by BeppoSAX. Its energy isExpand
  • 131
  • 6
  • PDF
Discovery of a transient absorption edge in the X-ray spectrum of GRB 990705.
We report the discovery of a transient equivalent hydrogen column density with an absorption edge at approximately 3.8 kiloelectron volts in the spectrum of the prompt x-ray emission of gamma-rayExpand
  • 126
  • 6
  • PDF
...
1
2
3
4
5
...