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When IIb Ceases To Be: Bridging the Gap Between IIb and Short-plateau Supernovae
Joseph R. Farah, D. Andrew Howell, Daichi Hiramatsu +13
Hydrogen-rich supernovae (SNe) span a range of hydrogen envelope masses at core collapse, producing diverse light curves from extended plateaus in Type II SNe to double-peaked Type…
Lense-Thirring precessing magnetar engine drives a superluminous supernova
Joseph R. Farah, Logan J. Prust, D. Andrew Howell +10
Type I superluminous supernovae (SLSNe-I) are at least an order of magnitude brighter than standard supernovae, with the internal power source for their luminosity still unknown. T…
A Detection of Helium in the Bright Superluminous Supernova SN 2024rmj
Harsh Kumar, Edo Berger, Peter K. Blanchard +8
We present extensive ultraviolet (UV), optical, and near-infrared (NIR) photometric and spectroscopic observations of the nearby hydrogen-poor superluminous supernova (SLSN-I) SN20…
The Double Tidal Disruption Event AT 2022dbl Implies That at Least Some "Standard" Optical TDEs are Partial Disruptions
Lydia Makrygianni, Iair Arcavi, Megan Newsome +37
Flares produced following the tidal disruption of stars by supermassive black holes can reveal the properties of the otherwise dormant majority of black holes and the physics of ac…
Early Shock-Cooling Observations and Progenitor Constraints of Type IIb SN 2024uwq
Bhagya M. Subrayan, David J. Sand, K. Azalee Bostroem +26
We present early multi-wavelength photometric and spectroscopic observations of the Type IIb supernova SN 2024uwq, capturing its shock-cooling emission phase and double-peaked ligh…
Supernovae at Distances < 40 Mpc: II. Supernova Rate in the Local Universe
Xiaoran Ma, Xiaofeng Wang, Jun Mo +21
Context.This is the second paper of a series aiming to determine the birth rates of supernovae in the local Universe. Aims. In this paper, we aim to estimate the SN rates in the lo…