Decomposition of the X-ray waveform of soft gamma-ray repeaters during giant flares

Details Decomposition of the X-ray waveform of soft gamma-ray repeaters during giant flares Decomposition of the X-ray waveform of soft gamma-ray repeaters during giant flares

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010scchg..53s.249x&link_type=abstract

Science China Physics, Mechanics and Astronomy, Volume 53, Issue 1, pp.249-251

Astronomy and Astrophysics

Astronomy

1

Soft Gamma-Repeaters, Giant Flare, Waveform Decomposition

Scientific paper

We have analyzed the observations of SGR 1806-20 and SGR 1900+14 during giant flares made with the Rossi X-ray Timing Explorer. We have studied the pulsating tail after the initial spike and decomposed the pulse waveform into separate components of sub-pulses. We found evidence for phase shifts of those sub-pulses. This is probably due to rapid geometrical changes in the magnetic field of the neutron star during giant flares. The phase shifts could be used to constrain the geometry of the magnetic field.

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