Results 91 to 100 of about 205,282 (201)

Finding Faint Intermediate-mass Black Holes in the Radio Band

, 2004
We discuss the prospects for detecting faint intermediate-mass black holes, such as those predicted to exist in the cores of globular clusters and dwarf spheroidal galaxies.
A. Bouchard, A. K. Tzioumis, A. Pasquali, A.V. Fillipenko, C.G. Tinney, E. Gallo, G.A. Drukier, G.C. Bower, H. Baumgardt, H. Falcke, H.M. Johnston, J. Gerssen, J. Gerssen, J. Magorrian, J. Malzac, J.E. Greene, J.E. Grindlay, J.J. Condon, J.N. Bahcall, K. Gebhardt, L.C. Ho, M. Mateo, M. Ricotti, M.C. Miller, P.C. Freire, R. Narayan, R. P. Fender, R. Perna, R.P. Fender, S. Ichimaru, S.F. Portegies Zwart, T. J. Maccarone, T.E. Strohmayer, T.H. Markert, T.J. Maccarone, Z. Zang   +35 more
core   +2 more sources

Discovery of an Intermediate Mass Black Hole at the center of the starburst/Seyfert composite galaxy IRAS 01072+4954

, 2012
The starburst/Seyfert composite galaxy IRAS 01072+4954 (z=0.0236) is an enigmatic source that combines a Seyfert~1-like X-ray emission with a starburst optical spectrum that lacks broad line emission.
., Bremer, M., Eckart, A., Fischer, S., Garcia-Marin, M., Iserlohe, C., Moser, L., Smajic, S., Valencia-S., M., Vitale, M., Zuther, J.   +10 more
core   +1 more source

Constraining the Low-mass End of the Black Hole Mass Function and the Active Fraction of the Intermediate-mass Black Holes

The Astrophysical Journal
We investigate the black hole mass function (BHMF) and the Eddington ratio distribution function (ERDF), focusing on the intermediate-mass black holes (IMBHs) with masses down to M _• ∼ 10 ^4 M _⊙ .
Hojin Cho, Jong-Hak Woo
doaj   +1 more source

Is NGC 6752 Hosting a Single or a Binary Black Hole? [PDF]

, 2003
The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations remarkably different with respect to all other pulsars known in globular clusters.
Colpi, Monica, Mapelli, Michela, Possenti, Andrea   +2 more
core   +2 more sources

Probing the presence of a single or binary black hole in the globular cluster NGC 6752 with pulsar dynamics

, 2003
The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations that are quite unusual compared to all other pulsars known in globular clusters. In particular PSR-A, a binary pulsar, lives in the cluster halo, while PSR-B and PSR-E,
Andrea Possenti, Bacon D., Dubath P., Fitchett M., Frank J., Michela Mapelli, Monica Colpi, Tauris T. M.   +7 more
core   +2 more sources

Counting the Unseen. II. Tidal Disruption Event Rates in Nearby Galaxies with REPTiDE

The Astrophysical Journal
Tidal disruption events (TDEs) are a class of transients that occur when a star is destroyed by the tides of a massive black hole (MBH). Their rates encode valuable MBH demographic information, but this can only be extracted if accurate TDE rate ...
Christian H. Hannah, Nicholas C. Stone, Anil C. Seth, Sjoert van Velzen   +3 more
doaj   +1 more source

Properties of “Lite” Intermediate-mass Black Hole Candidates in LIGO-Virgo’s Third Observing Run

The Astrophysical Journal Letters
Over a hundred gravitational-wave (GW) detections and candidates have been reported from the first three observing runs of the Advanced LIGO-Virgo-KAGRA (LVK) detectors. Among these, the most intriguing events are binary black hole mergers that result in
Krystal Ruiz-Rocha, Anjali B. Yelikar, Jacob Lange, William Gabella, Robert A. Weller, Richard O’Shaughnessy, Kelly Holley-Bockelmann, Karan Jani   +7 more
doaj   +1 more source

The steady state of intermediate-mass black holes near a supermassive black hole

Astronomy & Astrophysics
Aims. Our aim is to investigate the properties of a cluster of intermediate-mass black holes (IMBHs) surrounding a supermassive black hole (SMBH). Methods. We simulated clusters of equal-mass IMBHs (mIMBH = 103 M⊙) initialised in a shell between 0.15 ≤ r [pc] ≤ 0.25 centred about a SMBH.
Hochart, E.J.S.G., Portegies Zwart, S.F.
openaire   +3 more sources

Ultradeep ATCA Imaging of 47 Tucanae Reveals a Central Compact Radio Source

The Astrophysical Journal
We present the results of an ultradeep radio continuum survey, containing ∼480 hr of observations, of the Galactic globular cluster 47 Tucanae with the Australia Telescope Compact Array.
Alessandro Paduano, Arash Bahramian, James C. A. Miller-Jones, Adela Kawka, Tim J. Galvin, Liliana Rivera Sandoval, Sebastian Kamann, Jay Strader, Laura Chomiuk, Craig O. Heinke, Thomas J. Maccarone, Stefan Dreizler   +11 more
doaj   +1 more source

Phenomenological Analogies in Black Hole Systems of all Masses

, 2004
I review the progress made on the physics of relativistic jets from black hole systems in the context of the analogy between AGN and microquasars that was proposed one decade ago.
Mirabel, I. F.
core   +2 more sources