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Metamorphosis of SN 2014C: Delayed Interaction Between a Hydrogen Poor Core-collapse Supernova and a Nearby Circumstellar Shell
D. Milisavljevic, R. Margutti, A. Kamble +19
We present optical observations of supernova SN 2014C, which underwent an unprecedented slow metamorphosis from H-poor type Ib to H-rich type IIn over the course of one year. The o…
Sodium Absorption Systems toward SN Ia 2014J Originate on Interstellar Scales
K. Maeda, A. Tajitsu, K. S. Kawabata +21
Na I D absorbing systems toward Type Ia supernovae (SNe Ia) have been intensively studied over the last decade with the aim of finding circumstellar material (CSM), which is an ind…
Young Remnants of Type Ia Supernovae and Their Progenitors: A Study of SNR G1.9+0.3
Sayan Chakraborti, Francesca Childs, Alicia Soderberg
Type Ia supernovae, with their remarkably homogeneous light curves and spectra, have been used as standardizable candles to measure the accelerating expansion of the Universe. Yet,…
A Deep Search for Prompt Radio Emission from Thermonuclear Supernovae with the Very Large Array
Laura Chomiuk, Alicia M. Soderberg, Roger A. Chevalier +10
Searches for circumstellar material around Type Ia supernovae (SNe Ia) are one of the most powerful tests of the nature of SN Ia progenitors, and radio observations provide a parti…
X-ray and radio emission from Type IIn supernova SN 2010jl
Poonam Chandra, Roger A. Chevalier, Nikolai Chugai +2
We present all X-ray and radio observations of the Type IIn supernova SN 2010jl. The X-ray observations cover a period up to day 1500 with Chandra, XMM-Newton, NuSTAR and Swift-XRT…
The Double-Peaked SN2013ge: a Type Ib/c SN with an Asymmetric Mass Ejection or an Extended Progenitor Envelope
M. R. Drout, D. Milisavljevic, J. Parrent +17
We present extensive observations of the Type Ib/c SN2013ge from -13 to +457 days, including spectra and Swift UV-optical photometry beginning 2-4 days post-explosion. This data se…