Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dda....41.0305p&link_type=abstract
American Astronomical Society, DDA meeting #41, #3.05; Bulletin of the American Astronomical Society, Vol. 41, p.927
Astronomy and Astrophysics
Astronomy
Scientific paper
4U 1820-303 is an ultracompact X-ray binary consisting of a white dwarf accreting via Roche-lobe overflow onto a neutron star. The binary period is 685 s. The luminosity is observed to vary by a factor 2 with a period of 170 days. and negative period derivative are observed. Hierarchical triple stellar model was proposed to explain the superorbital variability. In this model the luminosity variations are due to variations of the binary's orbital eccentricity. We modeled the system including Kozai mechanism, tidal and rotational bulges on the white dwarf, tidal dissipation, mass transfer and gravitational radiation. Our model explains origin of 170d luminosity variation and shows that if this is indeed triple system, the observed negative period derivative is not an intrinsic property of the system. We give an upper limit for tidal dissipation factor Q for white dwarf.
Murray Nathan
Prodan Snezana
No associations
LandOfFree
Resonant trapping of LMBX 4U 1820-303, Constraint on Tidal Dissipation Factor Q for White Dwarf Secondary 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 Resonant trapping of LMBX 4U 1820-303, Constraint on Tidal Dissipation Factor Q for White Dwarf Secondary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonant trapping of LMBX 4U 1820-303, Constraint on Tidal Dissipation Factor Q for White Dwarf Secondary will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-915814