Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-10-25
The Astrophysical Journal Letters, Volume 737, Issue 2, article id. L28 (2011)
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages; typos fixed; references added
Scientific paper
We discuss the observable effects of enhanced black-hole mass loss in a black hole--neutron star (BH--NS) binary, due to the presence of a warped extra spatial dimension of curvature radius $L$ in the braneworld scenario. For some masses and orbital parameters in the expected ranges the binary components would outspiral, the opposite of the behavior due to energy loss from gravitational radiation alone. If the NS is a pulsar, observations of the rate of change of the orbital period with a precision obtained for the Binary Pulsar B1913+16 could easily detect the effect of mass loss. For $M_{BH}=7M_\odot$, $M_{NS}=1.4M_\odot$, eccentricity $e=0.1$, and $L=10\mu$m, the critical orbital period dividing systems which inspiral from systems which outspiral is P$\approx$6.5 hours, which is within the range of expected orbital periods; this value drops to P$\approx$4.2 hours for $M_{BH}=5M_\odot$. Observations of a BH--pulsar system could set considerably better limits on $L$ in these braneworld models than could be determined by torsion-balance gravity experiments in the foreseeable future.
Kavic Michael
Minic Djordje
Simonetti John H.
Surani Umair
Vejayan Vipin
No associations
LandOfFree
A Precision Test for an Extra Spatial Dimension Using Black Hole--Pulsar Binaries 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 A Precision Test for an Extra Spatial Dimension Using Black Hole--Pulsar Binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Precision Test for an Extra Spatial Dimension Using Black Hole--Pulsar Binaries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158611