Magnetar 1E 1841-045: Upper limits from a neutrino search with IceCube
ATel #16816; Alicia Mand (University of Wisconsin - Madison), Justin Vandenbroucke (University of Wisconsin - Madison), Marcos Santander (University of Alabama - Tuscaloosa)
on 18 Sep 2024; 00:23 UT
Credential Certification: Justin Vandenbroucke (justin.vandenbroucke@wisc.edu)
Subjects: Neutrinos, Magnetar
Referred to by ATel #: 16927
The IceCube Collaboration (http://icecube.wisc.edu/) reports:
IceCube has performed a search for track-like muon neutrino events arriving from the direction of the magnetar 1E 1841-045 during its recent outburst (Swift-BAT ATel #16784, Fermi-GBM ATel #16786). The search was performed using a time window of four days (2024-08-20 04:00:00.0 UTC to 2024-08-24 04:00:00.0 UTC), during which IceCube was collecting good quality data. This time window includes the first detection of activity by Swift-BAT and activity detected by Fermi-GBM.
We find that the data are consistent with atmospheric background expectations, with a p-value of 1.0. We accordingly derive a time-integrated muon-neutrino flux upper limit for this source of E^2 dN/ dE = 3.4 x 10^-2 GeV cm^-2 at 90% CL, under the assumption of an E^-2 power law. The central 90% energy range of events IceCube would detect from a source at this declination with an E^-2 spectrum is approximately 2 TeV to 80 PeV.
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@icecube.wisc.edu.
