Speaker
Description
The various multi-messenger emission models for the Seyfert galaxy NGC 1068 suggest black hole vicinity as a probable region of neutrino production. Dark matter (DM) halos may have a spiked structure near the central supermassive blackhole (SMBH) where the rate of DM annihilation is boosted. Therefore, galaxies holding SMBHs could be the sources of neutrinos emission due to DM annihilation. This analysis selects in total 49 nearby AGNs from different catalogs with known SMBH masses. To estimate a reasonable J-factor of each source, a machine learning method is applied to estimate missing information. Using 11 years of IceCube “tracks” data, the sensitivity and discovery potential are calculated for both a stacking analysis with all sources, as well as for a catalog search using individual sources. Both analyses are performed with a power-law and a DM annihilation spectrum. In the case of non-detection, an upper limit on the thermally averaged dark matter self-annihilation cross-section will be set.
