11 papers · 1 filter
Deep Optical Follow-up Observations to IceCube Cosmic Neutrinos: a case for IC230724A with Subaru/HSC and prospects with Rubin/LSST
Shigeo S. Kimura, Masaomi Tanaka, Seiji Toshikage +8
IceCube has been detecting cosmic high-energy neutrinos for more than 10 years, but their major sources are still under debate. To identify them, IceCube is issuing neutrino alerts…
Compact dusty starbursts at cosmic noon linked to high-energy neutrinos
Yuji Urata, Kuiyun Huang, Bunyo Hatsukade +7
The origin of high-energy astrophysical neutrinos remains unresolved, and secure electromagnetic counterparts to individual events are rare despite rapid follow-up. Dusty star-form…
Electromagnetic Flares from Compact-Object Mergers in AGN Disks: Signatures and Predictions
Hiromichi Tagawa, Zoltán Haiman, Shigeo S. Kimura +2
Accretion disks in active galactic nuclei (AGN) are promising sites for mergers of stellar-mass black holes (BHs) detectable via gravitational waves (GWs). These environments facil…
Neutrino and electromagnetic signatures from Superluminous Supernovae: a case study for SN 2017egm
Mainak Mukhopadhyay, Shigeo S. Kimura, Indrek Vurm +1
Superluminous supernovae (SLSNe) are rare transients that are times more luminous than ordinary stellar explosions, reaching peak optical luminosities $\sim 10^{44}…
Interpreting Swift and NuSTAR Observations of the Low-Luminosity Active Galactic Nucleus NGC 4278 with Radiatively Inefficient Accretion Flows and Implications for Neutrino Emission
Abhishek Das, Qi Feng, Eleanor Young +3
We report the first NuSTAR hard X-ray observations of the low-luminosity active galactic nucleus NGC 4278. The source is clearly detected beyond 10 keV with a hard X-ray spectrum c…
IceCube's convex all-sky neutrino spectrum consistent with the magnetically powered corona scenario for active galactic nuclei
Kohta Murase, Shigeo S. Kimura, Mainak Mukhopadhyay +1
High-energy multimessenger background analyses over the past decade have provided evidence for a population of hidden neutrino sources that are opaque to GeV-TeV gamma rays, a pict…