417 citations · 5.2k across the 148 of their papers we have counts for
19 papers · 1 filter
Probing ALP-Photon Mixing with High-Resolution X-ray Spectroscopy
Yu Zhou, Jiejia Liu, Volodymyr Takhistov +1
Axion-like particles (ALPs) provide a compelling avenue for exploring physics beyond the Standard Model. In astrophysical magnetized plasmas an ALP-photon coupling induces…
Unlocking Discovery Potential for Decaying Dark Matter and Faint X-ray Sources with XRISM
Yu Zhou, Volodymyr Takhistov, Kazuhisa Mitsuda
Astrophysical emission lines arising from particle decays can offer unique insights into the nature of dark matter (DM). Using dedicated simulations with background and foreground…
Search for astrophysical electron antineutrinos in Super-Kamiokande with 0.01wt% gadolinium-loaded water
M. Harada, K. Abe, C. Bronner +238
We report the first search result for the flux of astrophysical electron antineutrinos for energies O(10) MeV in the gadolinium-loaded Super-Kamiokande (SK) detector. In June 2020,…
Revisiting Tests of Lorentz Invariance with Gamma-ray Bursts: Effects of Intrinsic Lags
Valeri Vardanyan, Volodymyr Takhistov, Metin Ata +1
Due to their cosmological distances high-energy astrophysical sources allow for unprecedented tests of fundamental physics. Gamma-ray bursts (GRBs) comprise among the most sensitiv…
Search for supernova bursts in Super-Kamiokande IV
Kamiokande collaboration, M. Mori, K. Abe +242
Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present wo…
Impacts of Jets and Winds From Primordial Black Holes
Volodymyr Takhistov, Philip Lu, Kohta Murase +2
Primordial black holes (PBHs) formed in the early Universe constitute an attractive candidate for dark matter. Within the gaseous environment of the interstellar medium, PBHs with…
Search for neutrinos in coincidence with gravitational wave events from the LIGO-Virgo O3a Observing Run with the Super-Kamiokande detector
Kamiokande collaboration, K. Abe, C. Bronner +209
The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-1…
Exploring the Origin of Supermassive Black Holes with Coherent Neutrino Scattering
Victor Munoz, Volodymyr Takhistov, Samuel J. Witte +1
Collapsing supermassive stars () at high redshifts can naturally provide seeds and explain the origin of the supermassive black holes observed in…
Search for Tens of MeV Neutrinos associated with Gamma-Ray Bursts in Super-Kamiokande
Kamiokande Collaboration, A. Orii, K. Abe +216
A search for neutrinos produced in coincidence with Gamma-Ray Bursts(GRB) was conducted with the Super-Kamiokande (SK) detector. Between December 2008 and March 2017, the Gamma-ray…
Contribution of Secondary Neutrinos from Line-of-sight Cosmic Ray Interactions to the IceCube Diffuse Astrophysical Flux
Alina Kochocki, Volodymyr Takhistov, Alexander Kusenko +1
In ten years of observations, the IceCube neutrino observatory has revealed a neutrino sky in tension with previous expectations for neutrino point source emissions. Astrophysical…
Search for Astronomical Neutrinos from Blazar TXS0506+056 in Super-Kamiokande
K. Hagiwara, K. Abe, C. Bronner +169
We report a search for astronomical neutrinos in the energy region from several GeV to TeV in the direction of the blazar TXS0506+056 using the Super-Kamiokande detector following…
Sensitivity of Super-Kamiokande with Gadolinium to Low Energy Anti-neutrinos from Pre-supernova Emission
C. Simpson, K. Abe, C. Bronner +186
Supernova detection is a major objective of the Super-Kamiokande (SK) experiment. In the next stage of SK (SK-Gd), gadolinium (Gd) sulfate will be added to the detector, which will…
Novel Signals from Neutron Star Mergers at 511 keV
Volodymyr Takhistov
Synergetic observations of multi-band coincidence signals from merging neutron stars have definitively marked the significance of multi-messenger astronomy. We present a new generi…
Positrons and 511 keV radiation as tracers of recent binary neutron star mergers
George M. Fuller, Alexander Kusenko, David Radice +1
Neutron-rich material ejected from neutron star-neutron star (NS-NS) and neutron star-black hole (NS-BH) binary mergers is heated by nuclear processes to temperatures of a few hund…
Search for Neutrinos in Super-Kamiokande associated with the GW170817 neutron-star merger
K. Abe, C. Bronner, Y. Hayato +160
We report the results of a neutrino search in Super-Kamiokande for coincident signals with the first detected gravitational wave produced by a binary neutron star merger, GW170817,…
Positrons from Primordial Black Hole Microquasars and Gamma-ray Bursts
Volodymyr Takhistov
We propose several novel scenarios how capture of small sublunar-mass primordial black holes (PBHs) by compact stars, white dwarfs or neutron stars, can lead to distinct short gamm…
Search for an excess of events in the Super-Kamiokande detector in the directions of the astrophysical neutrinos reported by the IceCube Collaboration
Kamiokande Collaboration, K. Abe, C. Bronner +158
We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events repor…
Primordial Black Holes and -Process Nucleosynthesis
George M. Fuller, Alexander Kusenko, Volodymyr Takhistov
We show that some or all of the inventory of -process nucleosynthesis can be produced in interactions of primordial black holes (PBHs) with neutron stars (NSs) if PBHs with mass…
Real-Time Supernova Neutrino Burst Monitor at Super-Kamiokande
K. Abe, Y. Haga, Y. Hayato +124
We present a real-time supernova neutrino burst monitor at Super-Kamiokande (SK). Detecting supernova explosions by neutrinos in real time is crucial for giving a clear picture of…