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9 papers · 2 filters
Optical photometry and spectroscopy of the low-luminosity, broad-lined Ic supernova iPTF15dld
E. Pian, L. Tomasella, E. Cappellaro +37
Core-collapse stripped-envelope supernova (SN) explosions reflect the diversity of physical parameters and evolutionary paths of their massive star progenitors. We have observed th…
Constraints on the Progenitor of SN 2016gkg From Its Shock-Cooling Light Curve
Iair Arcavi, Griffin Hosseinzadeh, Peter J. Brown +17
SN 2016gkg is a nearby Type IIb supernova discovered shortly after explosion. Like several other Type IIb events with early-time data, SN 2016gkg displays a double-peaked light cur…
The progenitor and early evolution of the Type IIb SN 2016gkg
L. Tartaglia, M. Fraser, D. J. Sand +24
We report initial observations and analysis on the Type IIb SN~2016gkg in the nearby galaxy NGC~613. SN~2016gkg exhibited a clear double-peaked light curve during its early evoluti…
A comprehensive long term study of the radio and X-ray Variability of NGC 4051 Paper II
Sadie Jones, Ian McHardy, Thomas J. Maccarone
The origin of the low luminosity radio emission in radio-quiet AGN, is unknown. The detection of a positive correlation between the radio and X-ray emission would imply a jet-like…
Wind, jet, hybrid corona and hard X-ray flares: multiwavelength evolution of GRO J1655-40 during the 2005 outburst rise
E. Kalemci, M. C. Begelman, T. J. Maccarone +4
We have investigated the complex multiwavelength evolution of GRO J1655-40 during the rise of its 2005 outburst. We detected two hard X-ray flares, the first one during the transit…
Radio follow-up of gravitational wave triggers during Advanced LIGO O1
N. T. Palliyaguru, A. Corsi, M. M. Kasliwal +8
We present radio follow-up observations carried out with the Karl G. Jansky Very Large Array during the first observing run (O1) of the Advanced Laser Interferometer Gravitational-…