Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hrxs.confe..10c&link_type=abstract
High Resolution X-ray Spectroscopy with XMM-Newton and Chandra, Proceedings of the international workshop held at the Mullard Sp
Physics
Scientific paper
EXO 0748-676 was observed with the Reflection Grating Spectrometer onboard the XMM-Newton Observatory for almost 400ks during the commissioning and calibration phases. During this time 28 type I X-ray bursts were observed. I present an analysis of the average burst spectra. We see an absorption spectrum arising in highly ionized material surrounding the neutron star with evidence of a change in the ionization of this material in response to the X-ray bursts. After self-consistently accounting for absorption in the circumstellar material we find significant residual absorption lines in the spectrum. These lines are consistent with Fe XXVI and XXV n=2-3 and O VIII n=1-2 transitions, all with a redshift of z=0.35. This constitutes the first direct measurement of the grativational redshift in a neutron star.
Cottam Jean
Méndez Mariano
Paerels Frederic
No associations
LandOfFree
Gravitationally Redshifted Absorption Lines in the Burst Spectra of the Neutron Star in EXO 0748-676 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitationally Redshifted Absorption Lines in the Burst Spectra of the Neutron Star in EXO 0748-676, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitationally Redshifted Absorption Lines in the Burst Spectra of the Neutron Star in EXO 0748-676 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-965514