2012A&A...540L...1D


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.17CET22:19:14

2012A&A...540L...1D - Astronomy and Astrophysics, volume 540, L1-1 (2012/4-1)

The hard X-ray emission of X Persei.

DOROSHENKO V., SANTANGELO A., KREYKENBOHM I. and DOROSHENKO R.

Abstract (from CDS):

We present an analysis of the spectral properties of the peculiar X-ray pulsar X Per based on INTEGRAL observations. We show that the source exhibits an unusually hard spectrum and is confidently detected by ISGRI up to more than 100keV. We find that two distinct components may be identified in the broadband 4-200keV spectrum of the source. We interpret these components as the result of thermal and bulk Comptonization in the vicinity of the neutron star and describe them with several semi-phenomenological models. The previously reported absorption feature at ∼30keV is not required in the proposed scenario and therefore its physical interpretation must be taken with caution. We also investigated the timing properties of the source in the framework of existing torque theory, concluding that the observed phenomenology can be consistently explained if the magnetic field of the neutron star is ∼1014G.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - pulsars: individual: X Persei - stars: neutron

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 501 0
2 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 898 0
3 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1355 0
4 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1902 0
5 BD+53 2790 HXB 22 07 56.2368407539 +54 31 06.405811141 9.4 10.11 9.84 9.64 9.43 O9.5Vep 171 0

    Equat.    Gal    SGal    Ecl

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2019.11.17-22:19:14

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