35 citations · 60 across the 3 of their papers we have counts for
4 papers
Searching for intermediate-mass black holes in NGC3310
Megan Argo, Joseph Coppola, Mar Mezcua +2
Intermediate-mass black holes are theoretically predicted but observationally elusive, and evidence for them is often indirect. The nearby face-on spiral galaxy NGC3310 has hosted…
Soft Extragalactic X-Ray Binaries at the Eddington Threshold
Hannah M. Earnshaw, Timothy P. Roberts
The luminosity range at and just below the 10^39 erg/s cut-off for defining ultraluminous X-ray sources (ULXs) is a little-explored regime. It none-the-less hosts a large number of…
A variable ULX and possible IMBH candidate in M51a
Hannah M. Earnshaw, Timothy P. Roberts, Lucy M. Heil +7
ULX-7, in the northern spiral arm of M51, demonstrates unusual behaviour for an ultraluminous X-ray source, with a hard X-ray spectrum but very high short-term variability. This su…
An Intermediate-Mass Black Hole Candidate in M51?
H. M. Earnshaw
We present the current results of an investigation into M51 ULX-7, using archival data from XMM-Newton, Chandra and NuSTAR, and optical and radio data from HST and VLA. The source…