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2012MNRAS.419.1525H - Mon. Not. R. Astron. Soc., 419, 1525-1536 (2012/January-2)
Narrow absorption features in the co-added XMM-Newton RGS spectra of isolated neutron stars.
HOHLE M.M., HABERL F., VINK J., DE VRIES C.P. and NEUHAUSER R.
Abstract (from CDS):
Although very bright and frequently observed, there are no absorption features visible in the spectra of RX J1856.4-3754 and PSR B0656+14, while the co-added XMM-Newton RGS spectrum of Geminga has not enough counts to detect such a feature.
We discuss a possible origin of these absorption features as lines caused by the presence of highly ionized oxygen (in particular O VII and/or O VI at 0.57 keV) in the interstellar medium and absorption in the neutron star atmosphere, namely the absorption features at 0.57 keV as gravitational redshifted (gr= 1.17) O VIII.
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): stars: neutron - pulsars: individual: Geminga - pulsars: individual: PSR B0656+14 - pulsars: individual: PSR B1055-52 - pulsars: individual: RX J0720.4-3125 - pulsars: individual: RX J1308.6+2127 - pulsars: individual: RX J1605.3+3249 - pulsars: individual: RX J1856.4-3754
Simbad objects: 14
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