Back to Volume
Paper: Black Hole Responsible for the Tidal Disruption of a Star in Swift J1644+57
Volume: 482, 10th Pacific Rim Conference on Stellar Astrophysics
Page: 213
Authors: Yoon, Y.; Im, M.
Abstract: A remarkable cosmological X-ray outburst, Swift J1644+57, was first detected on 18th March 2011. This phenomenon was assumed to be a gamma-ray burst (GRB). However, unlike any previously observed GRB, it remained bright and highly variable for a prolonged period with three additional detections by Burst Alert Telescope (BAT). There are two models of tidal disruption of a star to explain this phenomenon which depend on the mass of the black hole located in the center of the host galaxy. We present the way we determine the mass of the central black hole, current progress using UKIRT, CQUEAN optical to NIR imaging data. We analyze the morphology of the host galaxy to decompose bulge fraction using GALFIT. We also present light curves of this phenomenon in the various bands in order to find the pure luminosity of the galaxy. Using these results, We determine the stellar mass of the host galaxy based on the SED fitting. The black hole mass is estimated by the stellar mass of the host galaxy and then the identity of the disrupted star is suggested.
Back to Volume