The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54

Details The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54 The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54

2011-07-22

arxiv.org/abs/1107.4583v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

4 pages; 2 figures; emulateapj.cls; to appear in AJ

Scientific paper

Ibata et al. reported evidence for density and kinematic cusps in the Galactic globular cluster M54, possibly due to the presence of a 9400 solar-mass black hole. Radiative signatures of accretion onto M54's candidate intermediate-mass black hole (IMBH) could bolster the case for its existence. Analysis of new Chandra and recent Hubble Space Telescope astrometry rules out the X-ray counterpart to the candidate IMBH suggested by Ibata et al. If an IMBH exists in M54, then it has an Eddington ratio of L(0.3-8 keV) / L(Edd) < 1.4 x 10^(-10), more similar to that of the candidate IMBH in M15 than that in G1. From new imaging with the NRAO Very Large Array, the luminosity of the candidate IMBH is L(8.5 GHz) < 3.6 x 10^29 ergs/s (3 sigma). Two background active galaxies discovered toward M54 could serve as probes of its intracluster medium.

Affiliated with

Also associated with

No associations

Rating

The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54 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 Candidate Intermediate-Mass Black Hole in the Globular Cluster M54, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-677173