10 citations
6 papers
Runaway core collapse and cluster survival: where are the parent clusters of ULXs?
Roberto Soria
Accreting intermediate-mass black holes (IMBHs) have been proposed as an explanation for ultraluminous X-ray sources (ULXs). Runaway core collapse inside a massive cluster is a pos…
Classifying the zoo of ultraluminous X-ray sources
Roberto Soria, Mark Cropper, Christian Motch
Ultraluminous X-ray sources (ULXs) are likely to include different physical types of objects. We discuss some possible subclasses, reviewing the properties of a sample of ULXs rece…
X-ray properties of the "Composite" Seyfert/Star-forming galaxies
A. Wolter, G. Trinchieri, R. Della Ceca +7
An enigmatic, small class of IR and X-ray luminous sources, named ``Composite'' starburst/Seyfert galaxies, has been defined from IRAS and RASS data. The objects have optical spect…
Direct Detection of Dark Matter with Space-based Laser Interferometers
A. W. Adams, J. S. Bloom
Dark matter pervades the Solar System, free-streaming at the halo's local Galactic orbital velocity and density. As these objects pass through the Solar system, they perturb gravit…
Quasisoft X-Ray Sources: Unusual States of Stellar-Mass Objects, or Intermediate Mass Black Holes?
R. Di Stefano, F. A. Primini, A. K. H. Kong +1
Chandra observations of nearby galaxies have revealed a number of X-ray sources characterized by high luminosities ( erg s) and in the range $100 -…
Cosmology and the Stellar Halo
James S. Bullock, Kathryn V. Johnston
If the favored hierarchical cosmological model is correct, then the Milky Way system should have accreted and subsequently tidally destroyed ~100 low-mass galaxies in the past ~12…