Abstract The Zwicky Transient Facility (ZTF), a public–private enterprise, is a new time-
domain survey employing a dedicated camera on the Palomar 48-inch Schmidt telescope …

Tidal disruption events (TDEs) are bursts of electromagnetic energy that are released when
supermassive black holes at the centres of galaxies violently disrupt a star that passes too …

We present observations of SN 2021csp, the second example of a newly identified type of
supernova (SN) hallmarked by strong, narrow, P Cygni carbon features at early times (Type …

Several thousand core-collapse supernovae (CCSNe) of different flavors have been
discovered so far. However, identifying their progenitors has remained an outstanding open …

Supernovae (SNe) embedded in dense circumstellar material (CSM) may show prominent
emission lines in their early-time spectra (≤ 10 days after the explosion), owing to …

This chapter describes the current classification scheme of supernovae (SNe). This scheme
has evolved over many decades and now includes numerous SN Types and sub-types …

A longstanding problem in the study of supernovae (SNe) has been the relationship
between the Type IIP and Type IIL subclasses. Whether they come from distinct progenitors …

There is a growing number of Type IIn supernovae (SNe) which present an outburst prior to
their presumably final explosion. These precursors may affect the SN display, and are likely …

We present detailed submillimeter—through centimeter—wave observations of the
extraordinary extragalactic transient AT2018cow. The apparent characteristics—the high …

We present multi-wavelength observations of SN 2014C during the first 500 days. These
observations represent the first solid detection of a young extragalactic stripped-envelope …