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- Publications
- Influence
BEAMING IN GAMMA-RAY BURSTS: EVIDENCE FOR A STANDARD ENERGY RESERVOIR
- D. Frail, S. Kulkarni, +11 authors F. Chaffee
- Physics
- 15 February 2001
We present a comprehensive sample of all gamma-ray burst (GRB) afterglows with known distances, and we derive their conical opening angles based on observed broadband breaks in their light curves.… Expand
Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
The Nuclear Spectroscopic Telescope Array (NuSTAR) is a National Aeronautics and Space Administration (NASA) Small Explorer mission that carried the first focusing hard X-ray (6-79 keV) telescope… Expand
An ultraluminous X-ray source powered by an accreting neutron star
- M. Bachetti, F. Harrison, +21 authors W. Zhang
- Physics, Medicine
- Nature
- 9 October 2014
The majority of ultraluminous X-ray sources are point sources that are spatially offset from the nuclei of nearby galaxies and whose X-ray luminosities exceed the theoretical maximum for spherical… Expand
A Study of the Afterglows of Four Gamma-Ray Bursts: Constraining the Explosion and Fireball Model
- S. Yost, F. Harrison, R. Sari, D. Frail
- Physics
- 2 July 2003
We employ a fireball model of the gamma-ray burst (GRB) explosion to constrain intrinsic and environmental parameters of four events with good broadband afterglow data: GRB 970508, GRB 980329, GRB… Expand
The afterglow of GRB 050709 and the nature of the short-hard γ-ray bursts
The final chapter in the long-standing mystery of the γ-ray bursts (GRBs) centres on the origin of the short-hard class of bursts, which are suspected on theoretical grounds to result from the… Expand
The afterglow and elliptical host galaxy of the short γ-ray burst GRB 050724
Despite a rich phenomenology, γ-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… Expand
NuSTAR DISCOVERY OF A 3.76 s TRANSIENT MAGNETAR NEAR SAGITTARIUS A
- K. Mori, E. Gotthelf, +20 authors W. Zhang
- Physics
- 8 May 2013
We report the discovery of 3.76 s pulsations from a new burst source near Sgr A^* observed by the NuSTAR observatory. The strong signal from SGR J1745–29 presents a complex pulse profile modulated… Expand
The afterglow, the redshift, and the extreme energetics of the gamma-ray burst 990123
- S. Kulkarni, S. Djorgovski, +26 authors E. Costa
- Physics
- 19 February 1999
Afterglow, or long-lived emission, has now been detected from about a dozen well-positioned gamma-ray bursts. Distance determinations made by measuring optical emission lines from the host galaxy, or… Expand
The Chandra Cosmos Legacy Survey: Overview and Point Source Catalog
- F. Civano, S. Marchesi, +39 authors C. Vignali
- Physics
- 5 January 2016
The COSMOS-Legacy survey is a 4.6 Ms Chandra program that has imaged 2.2 deg2 of the COSMOS field with an effective exposure of ≃ 160 ks over the central 1.5 deg^2 and of ≃ 80 ks in the remaining… Expand
A High Braking Index for a Pulsar
- R. Archibald, E. Gotthelf, +8 authors J. Tomsick
- Physics
- 1 March 2016
We present a phase-coherent timing solution for PSR J1640-4631, a young 206 ms pulsar using X-ray timing observations taken with NuSTAR. Over this timing campaign, we have measured the braking index… Expand