SIMBAD references

2012ApJ...750L..27S - Astrophys. J., 750, L27 (2012/May-2)

No evidence for intermediate-mass black holes in globular clusters: strong constraints from the JVLA.

STRADER J., CHOMIUK L., MACCARONE T.J., MILLER-JONES J.C.A., SETH A.C., HEINKE C.O. and SIVAKOFF G.R.

Abstract (from CDS):

With a goal of searching for accreting intermediate-mass black holes (IMBHs), we report the results of ultra-deep Jansky Very Large Array radio continuum observations of the cores of three Galactic globular clusters: M15, M19, and M22. We reach rms noise levels of 1.5-2.1 µJy/beam at an average frequency of 6 GHz. No sources are observed at the center of any of the clusters. For a conservative set of assumptions about the properties of the accretion, we set 3σ upper limits on IMBHs from 360 to 980 M . These limits are among the most stringent obtained for any globular cluster. They add to a growing body of work that suggests either (1) IMBHs ≳ 1000 M are rare in globular clusters or (2) when present, IMBHs accrete in an extraordinarily inefficient manner.

Abstract Copyright:

Journal keyword(s): black hole physics - globular clusters: general - radio continuum: general

Status at CDS:  

Simbad objects: 15

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2012ApJ...750L..27S and select 'bookmark this link' or equivalent in the popup menu


2020.06.06-05:00:36

© Université de Strasbourg/CNRS

    • Contact