Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-05-18
Astronomy and Astrophysics
Astrophysics
3 pages, Minor revisions, A&A Letters, in press
Scientific paper
10.1051/0004-6361:20010835
Heyl (2000) made an interesting suggestion that the observed shifts in QPO frequency in type I X-ray bursts could be influenced by the same geometrical effect of strong gravity as the one that causes centrifugal force reversal discovered by Abramowicz and Lasota (1974). However, his main result contains a sign error. Here we derive the correct formula and conclude that constraints on the M(R) relation for neutron stars deduced from the rotational-modulation model of QPO frequency shifts are of no practical interest because the correct formula implies a weak condition R* > 1.3 Rs, where Rs is the Schwarzschild radius. We also argue against the relevance of the rotational-modulation model to the observed frequency modulations.
Abramowicz Marek A.
Kluzniak Wiodzimierz
Lasota Jean-Pierre
No associations
LandOfFree
The centrifugal force reversal and X-ray bursts 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 The centrifugal force reversal and X-ray bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The centrifugal force reversal and X-ray bursts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-197113