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Galaxy gas as obscurer: I. GRBs x-ray galaxies and find a N_H ~ M* relation
Johannes Buchner, Steve Schulze, Franz E. Bauer
An important constraint for galaxy evolution models is how much gas resides in galaxies, in particular at the peak of star formation z=1-3. We attempt a novel approach by letting l…
A Revised Host Galaxy Association for GRB 020819B: A High-Redshift Dusty Starburst, Not a Low-Redshift Gas-Poor Spiral
Daniel A. Perley, Thomas Krühler, Patricia Schady +8
The purported spiral host galaxy of GRB 020819B at z=0.41 has been seminal in establishing our view of the diversity of long-duration gamma-ray burst environments: optical spectros…
The Superluminous Transient ASASSN-15lh as a Tidal Disruption Event from a Kerr Black Hole
G. Leloudas, M. Fraser, N. C. Stone +47
When a star passes within the tidal radius of a supermassive black hole, it will be torn apart. For a star with the mass of the Sun () and a non-spinning black hole with a…
Long-Term X-ray Variability of Typical Active Galactic Nuclei in the Distant Universe
G. Yang, W. Brandt, B. Luo +13
We perform long-term ( yr, observed-frame) X-ray variability analyses of the 68 brightest radio-quiet active galactic nuclei (AGNs) in the 6 Ms Deep Field-Sou…
Highly Luminous Supernovae associated with Gamma-Ray Bursts I.: GRB 111209A/SN 2011kl in the Context of Stripped-Envelope and Superluminous Supernovae
D. A. Kann, P. Schady, F. E. Olivares +22
GRB 111209A, one of the longest Gamma-Ray Bursts (GRBs) ever observed, is linked to SN 2011kl, the most luminous GRB-Supernova (SN) detected so far, which shows evidence for being…
450 Days of Type II SN 2013ej in Optical and Near-Infrared
Fang Yuan, A. Jerkstrand, S. Valenti +31
We present optical and near-infrared photometric and spectroscopic observations of SN 2013ej, in galaxy M74, from 1 to 450 days after the explosion. SN 2013ej is a hydrogen-rich su…