Kavli Affiliate: Linhua Jiang | First 5 Authors: Wei-Jian Guo, Hu Zou, Victoria Anne Fawcett, Rebecca Canning, Stephanie Juneau | Summary: Changing-look Active Galactic Nuclei (CL AGN) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines, associated with a transient timescale (about $100sim5000$ days) that is much shorter than […]

Kavli Affiliate: Linhua Jiang | First 5 Authors: Wei-Jian Guo, Hu Zou, Victoria Anne Fawcett, Rebecca Canning, Stephanie Juneau | Summary: Changing-look Active Galactic Nuclei (CL AGN) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines, associated with a transient timescale (about $100sim5000$ days) that is much shorter than […]

Kavli Affiliate: Rainer Spurzem | First 5 Authors: Rainer Spurzem, Francesco Rizzuto, Manuel Arca Sedda, Albrecht Kamlah, Peter Berczik | Summary: The evolution of dense star clusters is followed by direct high-accuracy N-body simulation. The problem is to first order a gravitational N-body problem, but stars evolve due to astrophysics and the more massive ones […]

Kavli Affiliate: Renxin Xu | First 5 Authors: Shuang Du, Tingting Lin, Shujin Hou, Renxin Xu, | Summary: It seems that the wealth of information revealed by the multi-messenger observations of the binary neutron star (NS) merger event, GW170817/GRB 170817A/kilonova AT2017gfo, places irreconcilable constraints to models of the prompt emission of this gamma-ray burst (GRB). […]

Kavli Affiliate: Claudio Ricci | First 5 Authors: Arghajit Jana, Arka Chatterjee, Hsiang-Kuang Chang, Prantik Nandi, Rubinur K. | Summary: We studied the broadband X-ray spectra of {it Swift}/BAT selected low-accreting AGNs using the observations from {it XMM-Newton}, {it Swift}, and {it NuSTAR} in the energy range of $0.5-150$~keV. Our sample consists of 30 AGNs […]

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Taeho Ryu, Pau Amaro Seoane, Andrew M. Taylor, Sebastian T. Ohlmann, | Summary: In stellar-dense environments, stars can collide with each other. For collisions close to a supermassive black hole (SMBH), the collisional kinetic energy can be so large that the colliding stars can be completely […]

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Taeho Ryu, Pau Amaro Seoane, Andrew M. Taylor, Sebastian T. Ohlmann, | Summary: In stellar-dense environments, stars can collide with each other. For collisions close to a supermassive black hole (SMBH), the collisional kinetic energy can be so large that the colliding stars can be completely […]

Kavli Affiliate: Huawei Zhang | First 5 Authors: Jonathan Cabrera Garcia, Timothy C. Beers, Yang Huang, Xin-Yi Li, Gaochao Liu | Summary: We employ a sample of 135,873 RR Lyrae stars (RRLs) with precise photometric-metallicity and distance estimates from the newly calibrated $P$–$phi_{31}$–$R_{21}$–[Fe/H] and $Gaia$ $G$-band $P$–$R_{21}$–[Fe/H] absolute magnitude-metallicity relations of Li et al., combined […]

Kavli Affiliate: Jing Wang | First 5 Authors: Hao Wang, Jiatai Lin, Danyi Li, Jing Wang, Bingchao Zhao | Summary: Mitosis detection is one of the fundamental tasks in computational pathology, which is extremely challenging due to the heterogeneity of mitotic cell. Most of the current studies solve the heterogeneity in the technical aspect by […]

Kavli Affiliate: Lijing Shao | First 5 Authors: Joel Bregman, Renyue Cen, Yang Chen, Wei Cui, Taotao Fang | Summary: The Hot Universe Baryon Surveyor (HUBS) is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. With its unprecedented spatially-resolved high-resolution spectroscopy and large field of view, […]