Breaching the limit: formation of GW190521-like and IMBH mergers in young massive clusters

Kavli Affiliate: Rainer Spurzem | First 5 Authors: Manuel Arca Sedda, Francesco Paolo Rizzuto, Thorsten Naab, Jeremiah Ostriker, Mirek Giersz | Summary: The LIGO-Virgo-Kagra collaboration (LVC) discovered recently GW190521, a gravitational wave (GW) source associated with the merger between two black holes (BHs) with mass $66$ M$_odot$ and $>85$ M$_odot$. GW190521 represents the first BH […]


Continue.. Breaching the limit: formation of GW190521-like and IMBH mergers in young massive clusters

Learning Gaussian Graphical Models with Latent Confounders

Kavli Affiliate: Ke Wang | First 5 Authors: Ke Wang, Alexander Franks, Sang-Yun Oh, , | Summary: Gaussian Graphical models (GGM) are widely used to estimate the network structures in many applications ranging from biology to finance. In practice, data is often corrupted by latent confounders which biases inference of the underlying true graphical structure. […]


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Smart Name Lookup for NDN Forwarding Plane via Neural Networks

Kavli Affiliate: Zhuo Li | First 5 Authors: Zhuo Li, Jindian Liu, Liu Yan, Beichuan Zhang, Peng Luo | Summary: Name lookup is a key technology for the forwarding plane of content router in Named Data Networking (NDN). To realize the efficient name lookup, what counts is deploying a highperformance index in content routers. So […]


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The Sloan Digital Sky Survey Reverberation Mapping Project: UV-Optical Accretion Disk Measurements with Hubble Space Telescope

Kavli Affiliate: Luis C. Ho | First 5 Authors: Y. Homayouni, Megan R. Sturm, Jonathan R. Trump, Keith Horne, C. J. Grier | Summary: We present accretion-disk structure measurements from UV-optical reverberation mapping observations of a sample of eight quasars at 0.24<z<0.85. Ultraviolet photometry comes from two cycles of Hubble Space Telescope monitoring, accompanied by […]


Continue.. The Sloan Digital Sky Survey Reverberation Mapping Project: UV-Optical Accretion Disk Measurements with Hubble Space Telescope

Generation of Switchable Singular Beams with Dynamic Metasurfaces

Kavli Affiliate: Li Xin Li | First 5 Authors: Ping Yu, Jianxiong Li, Xin Li, Gisela Schuetz, Michael Hirscher | Summary: Singular beams have attracted great attention due to their optical properties and broad applications from light manipulation to optical communications. However, there has been a lack of practical schemes with which to achieve switchable […]


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The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range

Kavli Affiliate: Xian Chen | First 5 Authors: Manuel Arca Sedda, Christopher P L Berry, Karan Jani, Pau Amaro-Seoane, Pierre Auclair | Summary: Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and their successors will […]


Continue.. The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range

Beyond spectroscopy. I. Metallicities, distances, and age estimates for over twenty million stars from SMSS DR2 and Gaia EDR3

Kavli Affiliate: Huawei Zhang | First 5 Authors: Yang Huang, Timothy C. Beers, Christian Wolf, Young Sun Lee, Christopher A. Onken | Summary: Accurate determinations of stellar parameters and distances for large complete samples of stars are keys for conducting detailed studies of the formation and evolution of our Galaxy. Here we present stellar atmospheric […]


Continue.. Beyond spectroscopy. I. Metallicities, distances, and age estimates for over twenty million stars from SMSS DR2 and Gaia EDR3

Hubble Space Telescope UV and H$α$ Measurements of the Accretion Excess Emission from the Young Giant Planet PDS 70 b

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Yifan Zhou, Brendan P. Bowler, Kevin R. Wagner, Glenn Schneider, Dániel Apai | Summary: Recent discoveries of young exoplanets within their natal disks offer exciting opportunities to study ongoing planet formation. In particular, a planet’s mass accretion rate can be constrained by observing the accretion-induced excess […]


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From haloes to galaxies. III. The gas cycle of local galaxy populations

Kavli Affiliate: Yingjie Peng | First 5 Authors: Jing Dou, Yingjie Peng, Alvio Renzini, Luis C. Ho, Filippo Mannucci | Summary: In Dou et al. (2021), we introduced the Fundamental Formation Relation (FFR), a tight relation between specific SFR (sSFR), H$_2$ star formation efficiency (SFE$_{rm H_2}$), and the ratio of H$_2$ to stellar mass. Here […]


Continue.. From haloes to galaxies. III. The gas cycle of local galaxy populations

X-ray polarimetry of the Crab nebula with PolarLight: polarization recovery after the glitch and a secular position angle variation

Kavli Affiliate: Renxin Xu | First 5 Authors: Xiangyun Long, Hua Feng, Hong Li, Jiahuan Zhu, Qiong Wu | Summary: We report follow-up observations of the Crab nebula with the PolarLight X-ray polarimeter, which revealed a possible variation in polarization associated with a pulsar glitch in 2019. The new observations confirm that the polarization has […]


Continue.. X-ray polarimetry of the Crab nebula with PolarLight: polarization recovery after the glitch and a secular position angle variation