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High Metallicity LGRB Hosts
J. F. Graham, A. S. Fruchter, E. M. Levesque +9
We present our imaging and spectroscopic observations of the host galaxies of two dark long bursts with anomalously high metallicities, LGRB 051022 and LGRB 020819B, which in conju…
Flows of X-ray gas reveal the disruption of a star by a massive black hole
Jon M. Miller, Jelle S. Kaastra, M. Coleman Miller +18
Tidal forces close to massive black holes can violently disrupt stars that make a close approach. These extreme events are discovered via bright X-ray and optical/UV flares in gala…
Late time multi wavelength observations of Swift J1644+5734: A luminous optical/IR bump and quiescent X-ray emission
A. J. Levan, N. R. Tanvir, G. C. Brown +10
We present late-time multi-wavelength observations of Swift J1644+57, suggested to be a relativistic tidal disruption flare (TDF). Our observations extend to >4 years from discover…
Swift J1112.2-8238: A Candidate Relativistic Tidal Disruption Flare
G. C. Brown, A. J. Levan, E. R. Stanway +5
We present observations of Swift J1112.2-8238, and identify it as a candidate relativistic tidal disruption flare (rTDF). The outburst was first detected by Swift/BAT in June 2011…
Swift discoveries of new populations of extremely long duration high energy transient
A. J. Levan
Recent observations with Swift have begun to uncover -ray transients whose total energies are comparable to those of gamma-ray bursts (GRB), but have a duration an order of magn…
A Multiwavelength Study of the Relativistic Tidal Disruption Candidate Sw J2058+05 at Late Times
Dheeraj R. Pasham, S. Bradley Cenko, Andrew J. Levan +13
We report a multiwavelength (X-ray, ultraviolet/optical/infrared, radio) analysis of the relativistic tidal disruption event candidate Sw J2058+05 from 3 months to 3 yr post-discov…