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

被引：5
|
作者：
Mineo, T
Cusumano, G
Massaro, E
Becker, W
Nicastro, L
机构：
[1] CNR, Sez Palermo, INAF, Ist Astrofis Spaziale & Fis Cosm, I-90146 Palermo, Italy
[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[3] CNR, Sez Roma, INAF, Ist Astrofis Spaziale & Fis Cosm, I-00113 Rome, Italy
[4] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany
来源：
ASTRONOMY & ASTROPHYSICS | 2004年 / 423卷 / 03期
关键词：
stars : neutron; stars : pulsars : general; stars : pulsars : individual : PSR B 1821-24; X-rays : stars;
D O I：
10.1051/0004-6361:20047192
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 3.9 x 10(-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.
引用
收藏
页码：1045 / 1050
页数：6
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