UTAPwiki/セミナー/宇宙物理学セミナー

RESCEU colloquium (17:00-)

Samaya Nissanke (Radboud University Nijmegen, the Netherlands)

The mergers of binary compact objects (black holes, neutron stars, white
dwarfs) are amongst some of the most violent
events in the Universe. The physics driving these events in strongly
curved spacetimes are extremely complex, rich but still remain elusive.
These cosmic laboratories present us now with both a challenge and an
opportunity.
The challenge is to explain the physics at play in strong-field gravity
in Universe. The opportunity is to detect the accompanying
electromagnetic (EM) and gravitational radiation for the first time with
a suite of time-domain telescopes and newly upgraded gravitational wave
(GW) detectors.

In this pivotal new era of strong-field gravity astronomy, the most
compelling astrophysical sources are neutron star binary mergers,
which should emit both in electromagnetic and GWs. I will first review
the most recent advances in this
blossoming field of EM + GW astronomy, which combines two active
disciplines: time-domain astronomy and general relativity. I will
discuss the promises of this new convergence by illustrating the wealth
of astrophysical information that a combined EM+GW
measurement would immediately bring. I will then outline the main
challenges that lie ahead for this new field in pinpointing the sky
location of neutron star mergers using GW detectors and optical and
radio wide-field synoptic surveys.


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Last-modified: 2015-06-26 (金) 18:43:42 (882d)