Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..587..570s&link_type=abstract
GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP Conference Proceedings, Volume 587, pp. 570-574 (2001).
Astronomy and Astrophysics
Astrophysics
1
Pulsars, X-Ray Sources, X-Ray Bursts, X- And Gamma-Ray Telescopes And Instrumentation, X-Ray
Scientific paper
We report on our analysis of a 274 ks observation of the Vela Pulsar with the Rossi X-Ray Timing Explorer (RXTE). The double-peaked, pulsed emission at 2-30 keV, which we had previously detected during a 93 ks observation, is confirmed with much improved statistics. There is now clear evidence, both in the spectrum and the light curve, that the emission in the RXTE band is a blend of two separate components. The spectrum of the harder component connects smoothly with the OSSE, COMPTEL and EGRET spectra and the peaks in the light curve are in phase coincidence with those of the high-energy light curve. The spectrum of the softer component is consistent with an extrapolation to the pulsed optical flux and the soft component of the second RXTE peak is in phase coincidence with the second optical peak. In addition, we see a peak in the 2-8 keV RXTE light curve at the radio peak phase. .
Gwinn Carl
Harding Alice K.
McCulloch Peter
Moffett David
Strickman Mark S.
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