38 citations · 206 across the 11 of their papers we have counts for
11 papers
Evolution of Resonant Self-interacting Dark Matter Halos
Ayuki Kamada, Hee Jung Kim
Recent analysis on the stellar kinematics of ultra-faint dwarf (UFD) galaxies has put a stringent upper limit on the self-scattering cross section of dark matter, i.e., $σ/m<{\cal…
Axion dark matter with thermal friction
Kiwoon Choi, Sang Hui Im, Hee Jung Kim +1
Cosmological evolution of axion field in the early universe might be significantly affected by a thermal friction induced by the axion coupling to thermalized hidden sector. We exa…
Cored Dark Matter halos in the Cosmic Neutrino Background
Wonsub Cho, Ki-Young Choi, Hee Jung Kim
We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the neutrinos to the d…
Manifesting hidden dynamics of a sub-component dark matter
Ayuki Kamada, Hee Jung Kim, Jong-Chul Park +1
We emphasize the distinctive cosmological dynamics in multi-component dark matter scenarios and its impact in probing a sub-dominant component of dark matter. We find that the ther…
Axion emission from supernova with axion-pion-nucleon contact interaction
Kiwoon Choi, Hee Jung Kim, Hyeonseok Seong +1
We examine the axion emission from supernovae with a complete set of relevant axion couplings including the axion-pion-nucleon contact interaction which was ignored in the previous…
Precision axion physics with running axion couplings
Kiwoon Choi, Sang Hui Im, Hee Jung Kim +1
We study the renormalization group running of axion couplings while taking into account that the Standard Model can be extended to its supersymmetric extension at a certain energy…
Maximally self-interacting dark matter: models and predictions
Ayuki Kamada, Hee Jung Kim, Takumi Kuwahara
We study self-interacting dark matter (SIDM) scenarios, where the -wave self-scattering cross section almost saturates the Unitarity bound. Such self-scattering cross sections a…
Escalating core formation with dark matter self-heating
Ayuki Kamada, Hee Jung Kim
Exothermic scatterings of dark matter (DM) produce DM particles with significant kick velocities inside DM halos. In collaboration with DM self-interaction, the excess kinetic ener…
Decaying axinolike dark matter: Discriminative solution to small-scale issues
Kyu Jung Bae, Ayuki Kamada, Hee Jung Kim
The latest Lyman- forest data severely constrain the conventional warm dark matter solution to small-scale issues in the cold dark matter paradigm. It has been also reported tha…
Self-heating of Strongly Interacting Massive Particles
Ayuki Kamada, Hee Jung Kim, Hyungjin Kim
It was recently pointed out that semi-annihilating dark matter (DM) may experience a novel temperature evolution dubbed as self-heating. Exothermic semi-annihilation converts the D…
Self-heating dark matter via semi-annihilation
Ayuki Kamada, Hee Jung Kim, Hyungjin Kim +1
The freeze-out of dark matter (DM) depends on the evolution of the DM temperature. The DM temperature does not have to follow the standard model one, when the elastic scattering is…