Zobrazeno 1 - 10
of 838
pro vyhledávání: '"Chu, Ming-chung"'
A simple and natural extension of the standard $\Lambda$CDM model is to allow relic neutrinos to have non-zero degeneracy. We confront this $\Lambda$CDM$\xi$ model, $\Lambda$CDM with neutrino mass $M_\nu$ and degeneracy $\xi_3$ as additional paramete
Externí odkaz:
http://arxiv.org/abs/2403.11499
It has long been hypothesized that accretion-induced collapse (AIC) of white dwarfs contribute to heavy chemical elements production in the universe. We present one-dimensional neutrino-radiative hydrodynamic simulations of AIC followed by post-proce
Externí odkaz:
http://arxiv.org/abs/2401.03798
Publikováno v:
MNRAS 529, 360 (2024)
Neutrinos are believed to be the most abundant fermions in the Universe, but their masses are unknown, except for being non-zero but much smaller than other fermions. Cosmological relic neutrinos could also have non-zero chemical potentials (or asymm
Externí odkaz:
http://arxiv.org/abs/2312.04278
We present two-dimensional hydrodynamic simulations of the accretion-induced collapse (AIC) of rotating white dwarfs admixed with an extended component of dark matter (DM) comprising of sub-GeV degenerate fermionic DM particles. We find that the DM c
Externí odkaz:
http://arxiv.org/abs/2301.06093
We show that a low-mass neutron star undergoes delayed explosion after mass removal from its surface. We couple the Newtonian hydrodynamics to a nuclear reaction network of $\sim 4500$ isotopes to study the nucleosynthesis and neutrino emission durin
Externí odkaz:
http://arxiv.org/abs/2211.14023
Autor:
Aluri, Pavan Kumar, Cea, Paolo, Chingangbam, Pravabati, Chu, Ming-Chung, Clowes, Roger G., Hutsemékers, Damien, Kochappan, Joby P., Lopez, Alexia M., Liu, Lang, Martens, Niels C. M., Martins, C. J. A. P., Migkas, Konstantinos, Colgáin, Eoin Ó, Pranav, Pratyush, Shamir, Lior, Singal, Ashok K., Sheikh-Jabbari, M. M., Wagner, Jenny, Wang, Shao-Jiang, Wiltshire, David L., Yeung, Shek, Yin, Lu, Zhao, Wen
Publikováno v:
Classical and Quantum Gravity, Vol. 40, Issue No. 9, Page No. 094001 (2023)
The Cosmological Principle (CP) -- the notion that the Universe is spatially isotropic and homogeneous on large scales -- underlies a century of progress in cosmology. It is conventionally formulated through the Friedmann-Lema\^itre-Robertson-Walker
Externí odkaz:
http://arxiv.org/abs/2207.05765
Publikováno v:
Phys. Rev. D 105, 123010 (2022)
The tidal properties of a neutron star are measurable in the gravitational waves emitted from inspiraling binary neutron stars, and they have been used to constrain the neutron star equation of state. In the same spirit, we study the dimensionless ti
Externí odkaz:
http://arxiv.org/abs/2207.02433
Autor:
Yeung, Shek, Chu, Ming-Chung
Recent observations suggest that there are violations of the isotropy of the universe at large scales, an important part of the cosmological principle. In this paper, we use the Cosmic Microwave Background (CMB) data to search for spatial variations
Externí odkaz:
http://arxiv.org/abs/2201.03799
Publikováno v:
Astrophys. J. 922 (2021) 242
We investigate whether the recently observed 2.6 $M_\odot$ compact object in the gravitational-wave event GW190814 can be a bosonic dark matter admixed compact star. By considering the three constraints in mass, radius and stability of such an object
Externí odkaz:
http://arxiv.org/abs/2110.05538
Autor:
Wong, Hiu Wing, Chu, Ming-chung
Publikováno v:
JCAP03(2022)066
Massive cosmological neutrinos suppress the Large-Scale Structure (LSS) in the Universe by smoothing the cosmic over-densities, and hence structure formation is delayed relative to that in the standard Lambda-Cold Dark Matter ($\Lambda$CDM) model. We
Externí odkaz:
http://arxiv.org/abs/2109.00303