We report on new RXTE X-ray spectral analysis of bursts from SGR 1806-20, the most prolific SGR source known. Previous studies of bursts from this source revealed a remarkable lack of spectral variability both in single bursts as well as from burst to burst. We present here some of the first evidence for significant spectral evolution within SGR bursts. We find that optically thin thermal bremsstrahlung (OTTB) spectra including photoelectric absorption provide the best fits to most bursts, however, other models (power law, Band GRB) can also produce statistically acceptable fits. We confirm the existence of a rolloff in the photon number spectrum below 5 keV
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We present the results of temporal and spectral studies of the short burst (less than a few hundred ...
We investigate spectral evolution in 37 bright, long gamma-ray bursts observed with the BATSE spectr...
We discuss observations of the quiescent emission from the soft gamma repeater SGR 1806-20 by the Ro...
The defining property of Soft Gamma Repeaters is the emission of short, bright bursts of X-rays and ...
The Soft Gamma Repeater, SGR 1900+14, entered a new phase of activity in April 2001 initiated by the...
We present evidence for burst emission from SGR 1900+14 with a power-law high energy spectrum extend...
We present a detailed analysis of a 3.5 s long burst from SGR 1900+14 that occurred on 2001 July 2. ...
The prototypical accretion-powered millisecond pulsar SAX J1808.4−3658 was observed simultaneously w...
We analyzed temporal and spectral properties, focusing on the short bursts, for three anomalous X-ra...
We present statistics of SGR 1806-20 bursts, combining 290 events detected with the Rossi X-Ray Timi...
In early October 2008, the Soft Gamma Repeater SGRJ1550 - 5418 (1E1547.0 - 5408, AXJ155052 - 5418, P...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We study the statistics of soft gamma repeater (SGR) bursts using a database of 187 events detected ...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We present the results of temporal and spectral studies of the short burst (less than a few hundred ...
We investigate spectral evolution in 37 bright, long gamma-ray bursts observed with the BATSE spectr...
We discuss observations of the quiescent emission from the soft gamma repeater SGR 1806-20 by the Ro...
The defining property of Soft Gamma Repeaters is the emission of short, bright bursts of X-rays and ...
The Soft Gamma Repeater, SGR 1900+14, entered a new phase of activity in April 2001 initiated by the...
We present evidence for burst emission from SGR 1900+14 with a power-law high energy spectrum extend...
We present a detailed analysis of a 3.5 s long burst from SGR 1900+14 that occurred on 2001 July 2. ...
The prototypical accretion-powered millisecond pulsar SAX J1808.4−3658 was observed simultaneously w...
We analyzed temporal and spectral properties, focusing on the short bursts, for three anomalous X-ra...
We present statistics of SGR 1806-20 bursts, combining 290 events detected with the Rossi X-Ray Timi...
In early October 2008, the Soft Gamma Repeater SGRJ1550 - 5418 (1E1547.0 - 5408, AXJ155052 - 5418, P...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We study the statistics of soft gamma repeater (SGR) bursts using a database of 187 events detected ...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J15...
We present the results of temporal and spectral studies of the short burst (less than a few hundred ...
We investigate spectral evolution in 37 bright, long gamma-ray bursts observed with the BATSE spectr...