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 …

The production of elements by rapid neutron capture (r-process) in neutron-star mergers is
expected theoretically and is supported by multimessenger observations,–of gravitational …

Gamma-ray bursts (GRBs) are among the brightest and most energetic events in the
Universe. The duration and hardness distribution of GRBs has two clusters, now understood …

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

After being launched, gamma-ray burst (GRB) jets propagate through dense media prior to
their breakout. The jet-medium interaction results in the formation of a complex structured …

We present a suite of the first 3D GRMHD collapsar simulations, which extend from the self-
consistent jet launching by an accreting Kerr black hole (BH) to the breakout from the star …

I review studies of core collapse supernovae (CCSNe) and similar transient events that
attribute major roles to jets in powering most CCSNe and in shaping their ejecta. I start with …

The joint detection of gravitational waves (GWs) and γ-rays from a binary neutron star (NS)
merger provided a unique view of off-axis gamma-ray bursts (GRBs) and an independent …

The fate and observable properties of gamma-ray burst jets crucially depend on their
interaction with the progenitor material that surrounds the central engine. We present a semi …

Abstract Unusually high velocities (≳ 0.1c) and correspondingly high kinetic energies have
been observed in a subset of Type Ic supernovae (so-called" broad-lined Ic" supernovae; …