14 papers
Heavy element dust explains the late-time spectra of kilonovae
Nanae Domoto, Kenta Hotokezaka, Daniel Kasen
Neutron star mergers are a leading site of -process, producing radioactively powered optical and infrared transients known as kilonovae. Observations of the kilonovae AT2017gfo,…
Las Cumbres Observatory Gravitational-Wave Follow-up in the Third and Fourth Observing Runs: Strengths and Weaknesses of a Rapid Response Galaxy Targeted Strategy
Ido Keinan, Iair Arcavi, D. Andrew Howell +34
We present a summary of gravitational-wave (GW) follow-up using the Las Cumbres Observatory global network of telescopes during the third (O3) and fourth (O4) observing runs of the…
The Light Curve of Wind-Reprocessed Tidal Disruption Events
Brenna Mockler, David Khatami, Daniel Kasen +2
The source of the optical/UV emission in tidal disruption events (TDEs) remains an enduring question in the field. Connecting the observed emission to the source is critical for bo…
A Unified Ionization Framework for the Spectroscopic Diversity of Tidal Disruption Events
Lars L. Thomsen, Lixin Dai, Daniel Kasen +4
Optical tidal disruption events (TDEs) exhibit extremely broad emission lines (-) and are observationally classified into four spectroscopic typ…
Collapse of Magnetized White Dwarfs as site of Heavy Element Formation and Kilonova Signal
Tetyana Pitik, David Radice, Daniel Kasen +3
We present the first end-to-end calculation connecting the accretion-induced collapse (AIC) of a magnetized, rapidly rotating white dwarf to observable kilonova signatures, combini…
Gamma-ray Signatures of r-Process Radioactivity from the Collapse of Magnetized White Dwarfs
Tetyana Pitik, Yong-Zhong Qian, David Radice +1
We predict the gamma-ray line emission from -process nuclei synthesized in the ejecta of the accretion-induced collapse (AIC) of a magnetized, rapidly rotating white dwarf. Usin…