4 citations · 11 across the 4 of their papers we have counts for
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Multiwavelength Observations and State Transitions of an Ultra-luminous Supersoft X-ray Source: Evidence for an Intermediate-Mass Black Hole
A. K. H. Kong, M. P. Rupen, L. O. Sjouwerman +1
We report the results of Chandra and XMM-Newton observations of an ultra-luminous supersoft X-ray source in M101. M101 ULX-1 underwent 2 outbursts in 2004 during which the peak bol…
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 -…
Supersoft and Quasisoft X-Ray Sources in the Globular Clusters of NGC 4472: Are they candidates for intermediate-mass black holes?
R. Di Stefano, R. Friedman, A. Kundu +1
We report on possible associations between 6 globular clusters in the Virgo elliptical galaxy NGC 4472 (M49) and bright ( erg s) very soft X-ray sources (VSSs…
Selecting Very Soft X-Ray Sources in External Galaxies: Luminous Supersoft X-ray Sources and Quasisoft Sources
R. Di Stefano, A. K. H. Kong
We introduce a procedure to identify very soft X-ray sources (VSSs) in external galaxies. Our immediate goal was to formulate a systematic procedure to identify luminous supersoft…
Two Years of the X-ray Sky in M31
A. K. H. Kong, M. R. Garcia, F. A. Primini +2
We have been monitoring M31 with HRC and ACIS onboard \chandra regularly in the past two years. By combining eight \chandra ACIS-I observations taken between 1999 to 2001, we have…
Quantum Gravity and Astrophysics: The Microwave Background and Other Thermal Sources
Rosanne Di Stefano, L. H. Ford, Hongwei Yu +1
The problem of formulating a fully consistent quantum gravity theory (QGT) has not yet been solved. Even before we are able to work out the details of a complete theory, however, w…