Transcript Короткий гамма-всплеск GRB 130603: открытие килоновой

Короткий гамма-всплеск GRB
130603:
открытие килоновой?
В.М.Липунов
GRB 130603B: Swift detection of a bright short burst
• At 15:49:14 UT, the Swift Burst Alert Telescope (BAT)
triggered and located GRB 130603B (trigger=557310).
Swift slewed immediately to the burst. The BAT on-board
calculated location is RA, Dec 172.209, +17.045 which is
RA(J2000) = 11h 28m 50s Dec(J2000) = +17d 02' 42" with
an uncertainty of 3 arcmin (radius, 90% containment,
including systematic uncertainty). The BAT light curve
showed a single spike structure with a duration of about
0.4 sec. The peak count rate was 60000 counts/sec (15350 keV), at ~0 sec after the trigger.
Konus-Wind observation of GRB
130603B Golenetskii et al., GCN 14771
GCN Circ n14770
GRB 130603B: MASTER-Net early
observations and optical sloap limit
A search for kilonova emission associated with GRB 130603B:
the smoking gun signature of a compact binary merger event
N. R. Tanvir, A. J. Levan, A. S. Fruchter, J. Hjorth, K. Wiersema, R.
Tunnicliffe, A. de Ugarte Postigo
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Submitted on 20 Jun 2013arXiv:1306.4971v1
The nature of short duration gamma-ray bursts (S-GRBs) represents one of the great unsolved
mysteries of astrophysics today. While a favoured model for their origin is the merger of two
compact objects (e.g., neutron stars) this lacks a smoking gun signature to date. However, these
mergers are expected to create radioactive species, including heavy r-process elements, which
should result in a faint, fast transient in the days following the burst, a so-called kilonova. Recent
calculations suggest much energy comes out in the near-infrared in the days following the initial
burst. Here we report a search for such an event accompanying GRB 130603B, the first S-GRB to
have a firm redshift established directly from the afterglow. At z=0.36 the faint transient is expected
to peak a few days after the burst at an H-band magnitude of ~25. Observing with the Hubble Space
Telescope (HST) nine days post-burst, we indeed find a source at the location of the burst, with
these properties, although we cannot yet say whether the light is transient in nature. If it is kilonova
emission, then it provides both strong support for the binary neutron star merger theory of shortGRBs and an alternative, un-beamed electromagnetic signature of the most promising gravitational
wave sources.
We note that we felt compelled to submit this provisional report of our work, despite our HST DDT
program being incomplete, due to other authors having already posted an analysis of the publicly
available first epoch data.
Снимок с Хаббла
Berger, Fong and Chornock (arXiv:1306.3960v1)
SMOKING GUN OR SMOLDERING EMBERS? A POSSIBLE R-PROCESS KILONOVA
ASSOCIATED WITH THE SHORT –HARD GRB 130603B
Блинников, Новиков и др. 1974
Пачинский
• PACZYNSKI, B., & PIRAN, T. 1992, ApJ, 395