Spectral and timing properties of the X-ray emission from the millisecond pulsar PSR B1821-24

Details Spectral and timing properties of the X-ray emission from the millisecond pulsar PSR B1821-24 Spectral and timing properties of the X-ray emission from the millisecond pulsar PSR B1821-24

2004-05-25

arxiv.org/abs/astro-ph/0405486v1

Astron.Astrophys. 423 (2004) 1045-1050

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figures. Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20047192

We report results on the timing and spectral analysis of observations of the millisecond pulsar PSR B1821-24 with RXTE, BeppoSAX and Chandra. The X-ray light curve is characterized by two narrow peaks at a phase distance of 0.452+/-0.002. The average pulsed emission, over the range 1.6-20 keV, is well represented by a single power law with a photon index alpha=1.30 +0.05 -0.02 and unabsorbed (2-10 keV) pulsed X-ray flux of 3.9x10^(-13) erg cm^(-2) s^(-1). We searched for a possible bunching of X-ray photons to verify if the X ray emission has a time structure similar to that of giant pulses and found a negative result.

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