dorsal/arxiv
View SchemaX-ray properties of the transient pulsar 3A 0535+262 in quiescence
| Authors | U. Mukherjee, B. Paul |
|---|---|
| Categories | |
| ArXiv ID | physics/0410255 |
| URL | https://arxiv.org/abs/physics/0410255 |
| DOI | 10.1051/0004-6361:20041665 |
Abstract
We present the timing and spectral properties of the transient Be/X-ray binary pulsar 3A 0535+262 during quiescence using three observations with the narrow field imaging instruments (NFI) of BeppoSAX. Assuming a distance of 2 kpc for this system, the 2-10 keV X-ray luminosities measured from the three observations are in the range of 1.5-4.0 $\times$ 10$^{33}$ erg s$^{-1}$, indicating a very low rate of accretion. We report the detection of pulsations at a very low luminosity of 2 $\times$ 10$^{33}$ erg s$^{-1}$ during one of the three observations, though at this accretion rate the system is expected to be in the centrifugally inhibited regime. The X-ray spectra for the unpulsed observations are best modeled as power law type while a combined model of power law and black-body is required to fit the pulsed spectrum.
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"abstract": "We present the timing and spectral properties of the transient Be/X-ray\nbinary pulsar 3A 0535+262 during quiescence using three observations with the\nnarrow field imaging instruments (NFI) of BeppoSAX. Assuming a distance of 2\nkpc for this system, the 2-10 keV X-ray luminosities measured from the three\nobservations are in the range of 1.5-4.0 $\\times$ 10$^{33}$ erg s$^{-1}$,\nindicating a very low rate of accretion. We report the detection of pulsations\nat a very low luminosity of 2 $\\times$ 10$^{33}$ erg s$^{-1}$ during one of the\nthree observations, though at this accretion rate the system is expected to be\nin the centrifugally inhibited regime. The X-ray spectra for the unpulsed\nobservations are best modeled as power law type while a combined model of power\nlaw and black-body is required to fit the pulsed spectrum.",
"arxiv_id": "physics/0410255",
"authors": [
"U. Mukherjee",
"B. Paul"
],
"categories": [
"physics.data-an",
"astro-ph"
],
"doi": "10.1051/0004-6361:20041665",
"title": "X-ray properties of the transient pulsar 3A 0535+262 in quiescence",
"url": "https://arxiv.org/abs/physics/0410255"
},
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