NDLI: The peculiar galactic center neutron star x-ray binary xmm j174457-2850.3

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The peculiar galactic center neutron star x-ray binary xmm j174457-2850.3

Content Provider	NASA Technical Reports Server (NTRS)
Author	Reynolds, M. T. Degenaar, N. Wijnands, R. Miller, J. M. Kennea, J. Haggard, D. Gehrels, N. Altamirano, D. Ponti, G.
Copyright Year	2014
Description	The recent discovery of a milli-second radio pulsar experiencing an accretion outburst similar to those seen in low mass X-ray binaries, has opened up a new opportunity to investigate the evolutionary link between these two different neutron star manifestations. The remarkable X-ray variability and hard X-ray spectrum of this object can potentially serve as a template to search for other X-ray binary radio pulsar transitional objects. Here we demonstrate that the transient X-ray source XMM J174457-2850.3 near the Galactic center displays similar X-ray properties. We report on the detection of an energetic thermonuclear burst with an estimated duration of 2 hr and a radiated energy output of 5E40 erg, which unambiguously demonstrates that the source harbors an accreting neutron star. It has a quiescent X-ray luminosity of Lx5E32 ergs and exhibits occasional accretion outbursts during which it brightens to Lx1E35-1E36 ergs for a few weeks (2-10 keV). However, the source often lingers in between outburst and quiescence at Lx1E33-1E34 ergs. This unusual X-ray flux behavior and its relatively hard X-ray spectrum, a power law with an index of 1.4, could possibly be explained in terms of the interaction between the accretion flow and the magnetic field of the neutron star.
File Size	343776
Page Count	10
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20160001400
Archival Resource Key	ark:/13960/t6g210f72
Language	English
Publisher Date	2014-08-21
Access Restriction	Open
Subject Keyword	Peculiar Neutron Galactic Neutron Stars Peculiar Stars X Rays X Ray Binaries Variability Pulsars Luminosity Estimating Magnetic Fields X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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