Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-04-12
ApJ, 542, 473
Astronomy and Astrophysics
Astrophysics
18 pages, 9 figs., 2 tables, uses psbox.tex and emulateapj5.sty. Submitted to ApJ
Scientific paper
10.1086/309502
We calculate the temperature profiles of (thin) accretion disks around rapidly rotating neutron stars (with low surface magnetic fields), taking into account the full effects of general relativity. We then consider a model for the spectrum of the X-ray emission from the disk, parameterized by the mass accretion rate, the color temperature and the rotation rate of the neutron star. We derive constraints on these parameters for the X-ray source Cygnus X-2 using the estimates of the maximum temperature in the disk along with the disk and boundary layer luminosities, using the spectrum inferred from the EXOSAT data. Our calculations suggest that the neutron star in Cygnus X-2 rotates close to the centrifugal mass-shed limit. Possible constraints on the neutron star equation of state are also discussed.
Bhattacharyya Sudip
Datta Bhaskar
Misra Rajiv
Thampan Arun V.
No associations
LandOfFree
Temperature Profiles of Accretion Disks around Rapidly Rotating Neutron Stars in General Relativity and Implications for Cygnus X-2 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 Temperature Profiles of Accretion Disks around Rapidly Rotating Neutron Stars in General Relativity and Implications for Cygnus X-2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature Profiles of Accretion Disks around Rapidly Rotating Neutron Stars in General Relativity and Implications for Cygnus X-2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-573165