Welcome to the
Star Destroyers
Research Group
Studying supernovae, tidal disruption events, neutron-star mergers, and other energetic transients through multi-wavelength observations at Tel Aviv University
The Team
Rachel Bruch
Postdoc
Ido Keinan
MSc Student
Tom Ben-Ami
Research Assistant
Noi Shitrit
PhD Student
Yael Dgany
MSc Student
Sondos Mohsen
PhD Student
Tomer Katz
MSc Student
Sara Faris
PhD Student
Shahar Bracha
Research Assistant
The Research
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02
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Massive Stars & Their Supernovae
We study the evolution of massive stars and their explosive deaths as supernovae. We do this by obtaining very early observations of supernovae (hours to days after explosion), finding and studying rare events, developing a framework to model their light curves, developing a method to perform asteroseismology of massive stars from the ground, and creating MESA models that can be compared to observations.
Tidal Disruption Events
We study stars that get torn apart by supermassive black holes in the centers of galaxies. We do this by searching the transient alert streams for events in galaxy centers, systematically classifying them, and following and studying those that that turn out to be real tidal disruption events. We compare our observations to models to try and map the diversity of the population and to constrain their emission physics.
Kilonovae & Peculiar Transients
We study the electromagnetic counterparts to gravitational-wave events (namely, binary neutron-star mergers, and hopefully soon, mergers of neutron stars with black holes by rapidly following their alerts in real time, and by searching for rapidly-evolving (and other peculiar) transients in optical surveys. We are also developing tools to help the community coordinate their search for gravitational-wave counterparts.
Feature Name
Feature Name
Feature Name
The Tools
Las Cumbres Observatory
Las Cumbres Observatory is a unique global network of robotic telescope ideal for real-time dynamically-scheduled observations. It allows us to trigger followup of transient events instantly, to conitnue monitoring them regularly in the long term, to observe events continuously as the earth rotates, and to do all of this programmatically.
BlackGEM
BlackGEM is a novel transient survey at La Silla Observatory in Chile, designed for high-cadence observations of transients and for gravitational-wave followup. It consists of three 65cm telescopes, each with a 2.7 square degree field of view. The project is led by NOVA (the Netherlands Research School for Astronomy), Radboud University in the Netherlands, and KU Leuven in Belgium.
SoXS
Son of X-Shooter (SoXS) is a medium-resolution high‐efficiency spectrograph for the ESO New Technology Telescope at the La Silla Observatory in Chile. It will have simultaneous wavelength coverage from the 3500 Angstrom to 2 microns, and the majority of its time will be dedicated to classifying and characterizing transient events. The project is led by INAF in Italy.
ULTRASAT
The Ultraviolet Transient Astronomy Satellite (ULTRASAT) will be a 200 square-degree field of view ultraviolet imager. It will detect supernova shock breakout, the early emission from neutron-star mergers, tidal disruption events and more. The project is led by the Weizmann Institute in Israel.
LS4
The La Silla Schmidt Southern Survey (LS4) is a transient survey at La Silla Observatory in Chile designed to systematically search the southern skies for transients of all types. It is being led by the Lawrence Berkely National Laboratory in California.
More information
The Gravitaional-Wave Treasure Map
The gravitaional-wave Treasure Map is a web-based tool to help the community coordinate followup of gravitational-wave events in real time. It allows anyone to share their telescope pointings, view the pointings reported by others, and visualize the search on an interactive map.
Former Group Members
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Cristina Barbarino
Former Postdoc
Moved to the private sector
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Lydia Makrygianni
Former Postdoc
Moved to Lancaster University
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Ayelet Hasson
Former Undergraduate Research Assistant
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Marco Lam
Former Postdoc
Moved to the University of Edinburgh
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Avishai Gilkis
Former Postdoc
Moved to the University of Cambridge
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Yuval Beth-Din
Former Undergraduate Research Assistant
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Wenxiong Li
Former Postdoc
Moved to the Chinese National Astronomical Observatories
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Danielle Gov
Former Undergraduate Research Assistant
Moved to the Weizmann Institute
Contact
arcavi @ tauex . tau . ac . il