[vsnet-grb-info 24703] IceCube-200117A: IceCube observation of a high-energy neutrino candidate event
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Jan 17 23:16:39 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 26802
SUBJECT: IceCube-200117A: IceCube observation of a high-energy neutrino candidate event
DATE: 20/01/17 14:15:28 GMT
FROM: Cristina Lagunas Gualda at DESY <cristina.lagunas at desy.de>
**
*The IceCube Collaboration (http://icecube.wisc.edu/) reports:*
*
On 20/01/17 at 11:08:29.69UT IceCube detected a track-like event with a
moderate probability of being of astrophysical origin. The event was
selected by the ICECUBE_Astrotrack_Bronze alert stream. The average
astrophysical neutrino purity for Bronze alerts is 30%. This alert has
an estimated false alarm rate of 1.93events per year due to atmospheric
backgrounds. The IceCube detector was in a normal operating state at the
time of detection.
After the initial automated alert
(https://gcn.gsfc.nasa.gov/notices_amon_g_b/133634_1410505.amon), more
sophisticated reconstruction algorithms have been applied offline, with
the direction refined to:
Date: 20/01/17
Time: 11:08:29.69UT
RA: 116.24 (+0.71-1.24 deg 90% PSF containment) J2000
Dec: 29.14 (+0.90-0.78 deg 90% PSF containment) J2000
We encourage follow-up by ground and space-based instruments to help
identify a possible astrophysical source for the candidate neutrino.
There are no 4FGL sources inside the 90% localization region. The
closest source is 4FGL J0746.5+2730 located at RA 116.63 deg and dec
27.52 deg (at a distance of 1.66 degrees from the best-fit location).
The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector
operating at the geographic South Pole, Antarctica. The IceCube realtime
alert point of contact can be reached at roc at icecube.wisc.edu
*
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