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Flash Spectroscopy: Emission Lines from the Ionized Circumstellar Material around -Day-Old Type II Supernovae
D. Khazov, O. Yaron, A. Gal-Yam +24
Supernovae (SNe) embedded in dense circumstellar material (CSM) may show prominent emission lines in their early-time spectra ( days after the explosion), owing to recombi…
Type II supernova energetics and comparison of light curves to shock-cooling models
Adam Rubin, Avishay Gal-Yam, Annalisa De Cia +37
During the first few days after explosion, Type II supernovae (SNe) are dominated by relatively simple physics. Theoretical predictions regarding early-time SN light curves in the…
The Arecibo Fast Radio Burst: Dense Circum-burst Medium
S. R. Kulkarni, E. O. Ofek, J. D. Neill
The nature of fast radio bursts (FRB) has been extensively debated. Here we investigate FRB121102, detected at Arecibo telescope and remarkable for its unusually large spectral ind…
Search for precursor eruptions among Type IIb supernovae
Nora L. Strotjohann, Eran O. Ofek, Avishay Gal-Yam +13
The progenitor stars of several Type IIb supernovae (SNe) show indications for extended hydrogen envelopes. These envelopes might be the outcome of luminous energetic pre-explosion…
Search for Gamma-ray Production in Supernovae Located in a Dense Circumstellar Medium with the Fermi-LAT
A. Franckowiak, K. Murase, E. O. Ofek
Supernovae (SNe) exploding in a dense circumstellar medium (CSM) are predicted to accelerate cosmic rays in collisionless shocks and emit GeV gamma rays and TeV neutrinos on a time…
Search for Early Gamma-ray Production in Supernovae Located in a Dense Circumstellar Medium with the Fermi LAT
M. Ackermann, I. Arcavi, L. Baldini +108
Supernovae (SNe) exploding in a dense circumstellar medium (CSM) are hypothesized to accelerate cosmic rays in collisionless shocks and emit GeV gamma rays and TeV neutrinos on a t…
Detection of a Type IIn Supernova in Optical Follow-up Observations of IceCube Neutrino Events
M. G. Aartsen, K. Abraham, M. Ackermann +331
The IceCube neutrino observatory pursues a follow-up program selecting interesting neutrino events in real-time and issuing alerts for electromagnetic follow-up observations. In Ma…
Fast Transients at Cosmological Distances with the SKA
J. -P. Macquart, E. Keane, K. Grainge +14
Impulsive radio bursts that are detectable across cosmological distances constitute extremely powerful probes of the ionized Inter-Galactic Medium (IGM), intergalactic magnetic fie…