MAXI observation of Crab pulsar during the gamma-ray flare in September 2010

Details MAXI observation of Crab pulsar during the gamma-ray flare in September 2010 MAXI observation of Crab pulsar during the gamma-ray flare in September 2010

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010fym..confp..28m&link_type=abstract

"The First Year of MAXI: Monitoring Variable X-ray Sources", Poster Presentations, 4th International MAXI Workshop held November

Astronomy and Astrophysics

Astronomy

Scientific paper

Crab is the standard candle of high energy X-ray and gamma-ray astronomy. The X-ray and gamma-ray fluxes and spectra have been believed to be stable for a long time scale of years. Surprisingly, on 2010 Sep. 19, AGILE and FERMI detected the GeV flare, in which the GeV flux enhanced about factor two (ATEL #2855, #2861). On the other hand, the X-ray flux change was not reported by RXTE-ASM, Swift-BAT and INTEGRAL-ISGRI (ATEL #2858, #2856). Therefore, the cause of the GeV flare is thought to be the activity at the nebula. MAXI observed the X-ray pulsation during the GeV flare, then MAXI can check the changes of the pulse fraction and the profile during these days and such the hypothesis. We will report this analysis.

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