This Supplement provides supporting material for Abbott et al.(2016a). We briefly summarize
past electromagnetic (EM) follow-up efforts as well as the organization and policy of the …

Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical
origin observed at extragalactic distances,–. It has long been speculated that magnetars are …

Abstract The NASA Double Asteroid Redirection Test (DART) spacecraft successfully
crashed on Dimorphos, the secondary component of the binary (65803) Didymos system …

Gamma-ray bursts (GRBs) are short and intense flashes of γ-rays coming from deep space.
GRBs were discovered more than a half century ago and now are observed across the …

We present results from a multi-chord Pluto stellar occultation observed on 2015 June 29
from New Zealand and Australia. This occurred only two weeks before the NASA New …

The Burst Observer and Optical Transient Exploring System (BOOTES) was first designed as
an asset of autonomous telescopes that started to be deployed in 1998, taking 24 years to …

We report on detailed multiwavelength observations and analysis of the very bright and long
GRB 210619B, detected by the Atmosphere-Space Interactions Monitor installed on the …

TIGRE (Telescopio Internacional de Guanajuato Robótico Espectroscópico) has been
operating in fully robotic mode in the La Luz Observatory (Guanajuato, Mexico) since the …

The Laser Interferometer Gravitational Wave Observatory (LIGO) and Virgo Collaboration's
Observing Run 3 has demanded the development of widely-applicable tools for gravitational …

Following the detection of a long GRB 190919B by INTEGRAL (INTErnational Gamma-Ray
Astrophysics Laboratory), we obtained an optical photometric sequence of its optical …