Peking – Page 2 – Kavli Institute Pre-Print Publications

Chinese Pulsar Timing Array upper limits on microhertz gravitational waves from supermassive black-hole binaries using PSR J1713+0747 FAST data

Posted by dbos February 13, 2025February 19, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Kejia Lee | First 5 Authors: R. Nicolas Caballero, Heng Xu, Kejia Lee, Siyuan Chen, Yanjun Guo | Summary: We derive the gravitational-wave (GW) strain upper limits from resolvable supermassive black-hole binaries using the data from the Five-hundred-meter Aperture Spherical radio Telescope (FAST), in the context of the Chinese Pulsar Timing Array project. […]

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Comparing observed properties of winds in low-luminosity active galactic nuclei with theoretical predictions

Posted by dbos February 12, 2025February 19, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Feng Yuan | First 5 Authors: Fangzheng Shi, Feng Yuan, Francesco Tombesi, Fu-guo XIe, | Summary: Theoretical and numerical simulations of black hole hot accretion flows have shown the ubiquitous existence of winds and predicted their properties such as velocity and mass flux. In this paper, we have summarized from literature the physical […]

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Shedding light on the star formation rate-halo accretion rate connection and halo quenching mechanism via DECODE, the Discrete statistical sEmi-empiriCal mODEl

Posted by dbos February 10, 2025February 19, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Yingjie Peng | First 5 Authors: Hao Fu, Lumen Boco, Francesco Shankar, Andrea Lapi, Mohammadreza Ayromlou | Summary: Aims: The relative roles of the physical mechanisms involved in quenching galaxy star formation are still unclear. We tackle this fundamental problem with our cosmological semi-empirical model DECODE (Discrete statistical sEmi-empiriCal mODEl), designed to predict […]

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Impact of mass transfer on the orbital evolution of a white dwarf close to an intermediate-mass black hole

Posted by dbos February 10, 2025Peking

Kavli Affiliate: Xian Chen | First 5 Authors: Yang Yang, Jie Yang, Xian Chen, Zihan Zhang, | Summary: Extreme mass ratio inspiral (EMRI) systems composed of low-mass white dwarfs (WDs, $0.1 – 0.3$ $mathrm{M}_{odot } $) and intermediate-mass black holes (IMBHs, $10^{3} – 10^{5}$ $mathrm{M}_{odot } $) are ideal objects for multi-messenger astronomy because they […]

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The SUPERCOLD-CGM survey: II. [ion{C}{1}]$(1-0)$ emission and the physical conditions of cold gas in Enormous Ly$α$ nebulae at $z,sim,2$

Posted by dbos Peking

Kavli Affiliate: Ran Wang | First 5 Authors: Jianan Li, Bjorn H. C. Emonts, Zheng Cai, Jianrui Li, Ran Wang | Summary: We report ALMA and ACA observations of atomic carbon ([ion{C}{1}]$(1-0)$) and dust continuum in 10 Enormous Ly$alpha$ Nebulae hosting ultra-luminous Type-I QSOs at $z=2.2-2.5$, as part of the SUrvey of Protocluster ELANe Revealing […]

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Broadband $γ$-ray spectrum of supernova remnant Cassiopeia A

Posted by dbos Peking

Kavli Affiliate: Li Xin Li | First 5 Authors: Zhen Cao, F. Aharonian, Y. X. Bai, Y. W. Bao, D. Bastieri | Summary: The core-collapse supernova remnant (SNR) Cassiopeia A (Cas A) is one of the brightest galactic radio sources with an angular radius of $sim$ 2.5 $arcmin$. Although no extension of this source has […]

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Iron-corrected Single-epoch Black Hole Masses of DESI Quasars at low redshift

Posted by dbos February 6, 2025Peking

Kavli Affiliate: Linhua Jiang | First 5 Authors: Zhiwei Pan, Linhua Jiang, Wei-Jian Guo, Shengxiu Sun, Małgorzata Siudek | Summary: We present a study on the possible overestimation of single-epoch supermassive black hole (SMBH) masses in previous works, based on more than 55,000 type 1 quasars at $0.25 < z < 0.8$ from the Dark […]

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Ruling out AGNs as the dominant source of cosmic reionization with JWST

Posted by dbos February 6, 2025February 19, 2025Peking

Kavli Affiliate: Linhua Jiang | First 5 Authors: Danyang Jiang, Linhua Jiang, Shengxiu Sun, Weiyang Liu, Shuqi Fu | Summary: Cosmic reionization represents the latest phase transition of the intergalactic medium (IGM) in the Universe. It has long been debated whether galaxies or active galactic nuclei (AGNs) are the major source of Lyman continuum (LyC) […]

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Ruling out AGNs as the dominant source of cosmic reionization with JWST

Posted by dbos February 6, 2025Peking

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Probing intermediate-mass black hole binaries with the Lunar Gravitational-wave Antenna

Posted by dbos February 5, 2025February 19, 2025Peking

Kavli Affiliate: Xian Chen | First 5 Authors: Hanlin Song, Han Yan, Yacheng Kang, Xian Chen, Junjie Zhao | Summary: New concepts for observing the gravitational waves (GWs) using a detector on the Moon, such as the Lunar Gravitational-wave Antenna (LGWA), have gained increasing attention. By utilizing the Moon as a giant antenna, the LGWA […]

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