Kavli Affiliate: Hu Zhan | First 5 Authors: Weiyang Liu, Hu Zhan, Yan Gong, Xin Wang, | Summary: The Hubble tension and $sigma_{8}$ tension are two of the major issues of the standard $Lambda$ Cold Dark Matter ($Lambda$CDM) model. The analysis of the Cosmic Microwave Background (CMB) data acquired by the Atacama Cosmology Telescope (ACT) […]
Kavli Affiliate: Hu Zhan | First 5 Authors: Weiyang Liu, Hu Zhan, Yan Gong, Xin Wang, | Summary: The analysis of the Cosmic Microwave Background (CMB) data acquired by the Atacama Cosmology Telescope (ACT) and the large-scale ($elllesssim1300$) Planck Telescope show a preference for the Early Dark Energy (EDE) theory, which was set to alleviate […]
Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Kanji Mori, Tomoya Takiwaki, Kei Kotake, Shunsaku Horiuchi, | Summary: Core-collapse supernovae can be a copious source of sterile neutrinos, hypothetical particles that mix with active neutrinos. We develop two-dimensional stellar core-collapse models that incorporate the mixing between tau neutrinos and heavy sterile neutrinos — those with […]
Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Kanji Mori, Tomoya Takiwaki, Kei Kotake, Shunsaku Horiuchi, | Summary: Core-collapse supernovae can be a copious source of sterile neutrinos, hypothetical particles that mix with active neutrinos. We develop two-dimensional stellar core-collapse models that incorporate the mixing between tau neutrinos and heavy sterile neutrinos — those with […]
Kavli Affiliate: Jia Liu | First 5 Authors: Hideki Tanimura, Albert Bonnefous, Jia Liu, Sanmay Ganguly, | Summary: In this work, we seek to improve the velocity reconstruction of clusters by using Graph Neural Networks — a type of deep neural network designed to analyze sparse, unstructured data. In comparison to the Convolutional Neural Network […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Jubee Sohn, Margaret J. Geller, Josh Borrow, Mark Vogelsberger, | Summary: We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We carefully explore simulated stellar […]
Kavli Affiliate: Lisa Barsotti | First 5 Authors: Alessandra Corsi, Lisa Barsotti, Emanuele Berti, Matthew Evans, Ish Gupta | Summary: The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first […]
Kavli Affiliate: Lisa Barsotti | First 5 Authors: Alessandra Corsi, Lisa Barsotti, Emanuele Berti, Matthew Evans, Ish Gupta | Summary: The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first […]
Kavli Affiliate: Misao Sasaki | First 5 Authors: Marcos M. Flores, Alexander Kusenko, Misao Sasaki, , | Summary: We reexamine production of primordial black holes in a supercooled phase transition. While a mere overdensity associated with a surviving false-vacuum patch does not imply formation of a black hole, it is possible for such a patch […]
Kavli Affiliate: Misao Sasaki | First 5 Authors: Marcos M. Flores, Alexander Kusenko, Misao Sasaki, , | Summary: We reexamine production of primordial black holes in a supercooled phase transition. While a mere overdensity associated with a surviving false-vacuum patch does not imply formation of a black hole, it is possible for such a patch […]