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 ($L_X>\sim 10^{36}$ erg s${}^{-1}$) and $kT$ in the range $100 -…