111 citations · 472 across the 11 of their papers we have counts for
11 papers
Thermal Evolution of Neutron Stars as a Probe of Physics beyond the Standard Model
Keisuke Yanagi
Thermal evolution of neutron stars (NSs) is studied as a probe of physics beyond the standard model. We first review the standard cooling theory of NSs in detail, with an emphasis…
Constraining FIMP from the structure formation of the Universe: analytic mapping from
Ayuki Kamada, Keisuke Yanagi
A feebly interacting massive particle (FIMP), contrasting with a weakly interacting massive particle (WIMP), is an intriguing dark matter (DM) candidate. Light (keV-scale) FIMP DM…
Fingerprint matching of beyond-WIMP dark matter: neural network approach
Kyu Jung Bae, Ryusuke Jinno, Ayuki Kamada +1
Galactic-scale structure is of particular interest since it provides important clues to dark matter properties and its observation is improving. Weakly interacting massive particle…
Dark Matter Heating vs. Rotochemical Heating in Old Neutron Stars
Koichi Hamaguchi, Natsumi Nagata, Keisuke Yanagi
Dark matter (DM) particles in the Universe accumulate in neutron stars (NSs) through their interactions with ordinary matter. It has been known that their annihilation inside the N…
Cooling Theory Faced with Old Warm Neutron Stars: Role of Non-Equilibrium Processes with Proton and Neutron Gaps
Keisuke Yanagi, Natsumi Nagata, Koichi Hamaguchi
Recent observations have found several candidates for old warm neutron stars whose surface temperatures are above the prediction of the standard neutron star cooling scenario, and…
Limit on the Axion Decay Constant from the Cooling Neutron Star in Cassiopeia A
Koichi Hamaguchi, Natsumi Nagata, Keisuke Yanagi +1
The observed rapid cooling of the neutron star (NS) located at the center of the supernova remnant Cassiopeia A (Cas A) can be explained in the minimal NS cooling scenario. This co…