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16 papers · 2 filters
The parameter-free Finger-Of-God model and its application to 21cm intensity mapping
Jiajun Zhang, André A. Costa, Bin Wang +3
Using the galaxy catalog built from ELUCID N-body simulation and the semi-analytical galaxy formation model, we have built a mock HI intensity mapping map. We have implemented the…
Implications for cosmology from Ground-based Cosmic Microwave Background observations
Ke Wang, Qing-Guo Huang
Cosmic Microwave Background (CMB) anisotropy encodes a lot of information about our Universe. In this paper we take the ground-based CMB observations (GCMB), including the South Po…
Pulsar Timing Array Constraints on Primordial Black Holes with NANOGrav 11-Year Data Set
Zu-Cheng Chen, Chen Yuan, Qing-Guo Huang
The detection of binary black hole coalescences by LIGO/Virgo has aroused the interest in primordial black holes (PBHs), because they could be both the progenitors of these black h…
Log-dependent slope of scalar induced gravitational waves in the infrared regions
Chen Yuan, Zu-Cheng Chen, Qing-Guo Huang
We analytically calculate the scalar induced gravitational waves (SIGWs) and find a log-dependent slope of SIGW in the infrared regions , namely $n_{\mathrm{GW}}(f)=3-2/\l…
Searching for primordial black holes with stochastic gravitational-wave background in the space-based detector frequency band
Yi-Fan Wang, Qing-Guo Huang, Tjonnie G. F. Li +1
Assuming that primordial black holes compose a fraction of dark matter, some of them may accumulate at the center of galaxy and perform a prograde or retrograde orbit against the g…
Fractional Dark Matter decay: cosmological imprints and observational constraints
Linfeng Xiao, Le Zhang, Rui An +2
If a fraction of the Dark Matter decays into invisible and massless particles (so-called "dark radiation") with the decay rate (or inverse lifetime) ,…