Frontiers in the study Gamma-ray bursts
Seminar
QUEST Center event
No
Speaker
Asaf Pe'er, Physics Department, University College Cork (UCC), Ireland
Date
11/12/2017 - 12:30Add to Calendar
2017-12-11 12:30:00
2017-12-11 12:30:00
Frontiers in the study Gamma-ray bursts
Gamma ray bursts (GRBs) are the most violent explosions in the
universe. While being studied extensively since the 1990's, a major
event took place a few weeks ago, with the first confirmed detection
of a GRB associated with the gravitational wave (GW) signal that
results from the merger of binary neutron star (NS) system, namely
GW/GRB170817a.
In the first part of the talk I will give broad overview of our
current understanding of GRB physics, followed by a description of the
GW/GRB170817a event and its implications.
In the second part of the talk (as time permits), I will discuss the
recent development in undertsanding the origin of the prompt spectra,
and in particular the role of thermal emission in it. I will discuss
some novel effects and theoretical ideas relevant for the study of
many astronomical objects. As a few examples, I will show how emission
from the photosphere can be observed to have high degree of
polarization; how it can be used to infer the jet magnetization; and
more.
בנין פיסיקה 202 חדר 301
המחלקה לפיזיקה
physics.dept@mail.biu.ac.il
Asia/Jerusalem
public
Place
בנין פיסיקה 202 חדר 301
Abstract
Gamma ray bursts (GRBs) are the most violent explosions in the
universe. While being studied extensively since the 1990's, a major
event took place a few weeks ago, with the first confirmed detection
of a GRB associated with the gravitational wave (GW) signal that
results from the merger of binary neutron star (NS) system, namely
GW/GRB170817a.
In the first part of the talk I will give broad overview of our
current understanding of GRB physics, followed by a description of the
GW/GRB170817a event and its implications.
In the second part of the talk (as time permits), I will discuss the
recent development in undertsanding the origin of the prompt spectra,
and in particular the role of thermal emission in it. I will discuss
some novel effects and theoretical ideas relevant for the study of
many astronomical objects. As a few examples, I will show how emission
from the photosphere can be observed to have high degree of
polarization; how it can be used to infer the jet magnetization; and
more.
תאריך עדכון אחרון : 27/11/2017
