Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Duncan, Robert C."'
Autor:
Duncan, Robert C., Parece, Andrew
Publikováno v:
Journal of Sports Analytics; July 2024, Vol. 10 Issue: 1 p87-104, 18p
Autor:
Duncan, Robert C.
Bright outbursts from Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs) are believed to be caused by instabilities in ultramagnetized neutron stars, powered by a decaying magnetic field. It was originally thought that these outbursts wer
Externí odkaz:
http://arxiv.org/abs/astro-ph/0401415
(ABBREVIATED) The extraordinary 1998 August 27 giant flare places strong constraints on the physical properties of its source, SGR 1900+14. We make detailed comparisons of the published data with the magnetar model. The giant flare evolved through th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110675
Autor:
Gogus, Ersin, Kouveliotou, Chryssa, Woods, Peter M., Thompson, Christopher, Duncan, Robert C., Briggs, Michael S.
We study the temporal and coarse spectral properties of 268 bursts from SGR 1806-20 and 679 bursts from SGR 1900+14, all observed with the Rossi X-Ray Timing Explorer/Proportional Counter Array. Hardness ratios and temporal parameters, such as T_90 d
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105110
Autor:
Duncan, Robert C.
The prototype for events that we call MFs - "March Fifth" events or "Magnetar Flares" - was observed on March 5, 1979. There is evidence that MFs are powered by catastrophic magnetic instabilities in ultramagnetized neutron stars. These events begin
Externí odkaz:
http://arxiv.org/abs/astro-ph/0103235
Autor:
Ibrahim, Alaa I., Strohmayer, Tod E., Woods, Peter M., Kouveliotou, Chryssa, Thompson, Christopher, Duncan, Robert C., Dieters, Stefan, van Paradijs, Jan, Finger, Mark
The Soft Gamma Repeater SGR 1900+14 entered a remarkable phase of activity during the summer of 1998. This activity peaked on August 27, 1998 when a giant periodic gamma-ray flare resembling the famous March 5, 1979 event from SGR 0526-66 was recorde
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007043
Autor:
Woods, Peter M., Kouveliotou, Chryssa, Finger, Mark H., Gogus, Ersin, Scott, D. Matthew, Dieters, Stefan, Thompson, Christopher, Duncan, Robert C., Hurley, Kevin, Strohmayer, Tod, Swank, Jean, Murakami, Toshio
We have phase connected a sequence of RXTE PCA observations of SGR 1806-20 covering 178 days. We find a simple secular spin-down model does not adequately fit the data. The period derivative varies gradually during the observations between 8.1 and 11
Externí odkaz:
http://arxiv.org/abs/astro-ph/0003292
Autor:
Duncan, Robert C.
In magnetic fields stronger than B_Q = 4.4 X 10^13 Gauss, an electron's Landau excitation energy exceeds its rest energy. I review the physics of this strange regime and some of its implications for the crusts and magneto- spheres of neutron stars. I
Externí odkaz:
http://arxiv.org/abs/astro-ph/0002442
Autor:
Gogus, Ersin, Woods, Peter M., Kouveliotou, Chryssa, van Paradijs, Jan, Briggs, Michael S., Duncan, Robert C., Thompson, Christopher
We present statistics of SGR 1806-20 bursts, combining 290 events detected with RXTE/PCA, 111 events detected with BATSE and 134 events detected with ICE. We find that the fluence distribution of bursts observed with each instrument are well describe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0002181
Autor:
Gogus, Ersin, Woods, Peter M., Kouveliotou, Chryssa, van Paradijs, Jan, Briggs, Michael S., Duncan, Robert C., Thompson, Christopher
We study the statistics of soft gamma repeater (SGR) bursts, using a data base of 187 events detected with BATSE and 837 events detected with RXTE PCA, all from SGR 1900+14 during its 1998-1999 active phase. We find that the fluence or energy distrib
Externí odkaz:
http://arxiv.org/abs/astro-ph/9910062