JWST reveals the diversity of nuclear obscuring dust in nearby AGN: nuclear isolation of MIRI/MRS datacubes and continuum spectral fitting

Kavli Affiliate: Claudio Ricci | First 5 Authors: Omaira González-Martín, Daniel J. Díaz-González, Mariela Martínez-Paredes, Almudena Alonso-Herrero, Enrique López-Rodríguez | Summary: We investigate the capabilities of the mid-infrared instrument (MIRI) of James Webb Space Telescope (JWST) to advance our knowledge of AGN dust using the spectral fitting technique on an AGN collection of 21 nearby […]


Continue.. JWST reveals the diversity of nuclear obscuring dust in nearby AGN: nuclear isolation of MIRI/MRS datacubes and continuum spectral fitting

Formation and Environmental Context of Giant Bulgeless Disk Galaxies in the Early Universe: Insights from Cosmological Simulations

Kavli Affiliate: Yingjie Peng | First 5 Authors: Fangzhou Jiang, Jinning Liang, Bingcheng Jin, Zeyu Gao, Weichen Wang | Summary: Giant bulgeless disk galaxies, theoretically expected to be rare in the early Universe, have been confirmed by the James Webb Space Telescope (JWST) to exist as early as 2 billion years after the Big Bang. […]


Continue.. Formation and Environmental Context of Giant Bulgeless Disk Galaxies in the Early Universe: Insights from Cosmological Simulations

Polarization Position Angle Swing and the Rotating Vector Model of Repeating Fast Radio Bursts

Kavli Affiliate: Kejia Lee | First 5 Authors: Xiaohui Liu, Heng Xu, Jiarui Niu, Yongkun Zhang, Jinchen Jiang | Summary: Fast radio bursts (FRBs), typically highly polarized, usually have a nearly constant polarization position angle (PA) during each burst. Some bursts show significant PA variations, and one of them was claimed to have a PA […]


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Massive Black Holes Seeded by Dark Matter — Implications for Little Red Dots and Gravitational Wave Signatures

Tingwei Shen, Xuejian Shen, Huangyu Xiao, Mark Vogelsberger, Fangzhou Jiang | Summary: [[{“value”:”Observations of supermassive black holes (SMBHs) at high redshifts challenge standard seeding scenarios. We examine a dissipative self-interacting dark matter (dSIDM) model in which gravothermal collapse leads to the formation of massive BH seeds ab initio. We utilize a semi-analytical framework to predict […]


Continue.. Massive Black Holes Seeded by Dark Matter — Implications for Little Red Dots and Gravitational Wave Signatures

Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Fangzhou Jiang, Zixiang Jiang, Haonan Zheng, Luis C. Ho, Kohei Inayoshi | Summary: [[{“value”:”We present a statistical study on the formation and growth of black holes (BHs) seeded by gravothermal core-collapse of self-interacting dark matter (SIDM) halos at high redshifts, using a semi-analytical framework based on Monte-Carlo merger trees. We demonstrate that BH formation via […]


Continue.. Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Fangzhou Jiang, Zixiang Jiang, Haonan Zheng, Luis C. Ho, Kohei Inayoshi | Summary: We present a statistical study on the formation and growth of black holes (BHs) seeded by gravothermal core-collapse of self-interacting dark matter (SIDM) halos at high redshifts, using a semi-analytical framework based on Monte-Carlo […]


Continue.. Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Kavli Affiliate: Luis C. Ho | First 5 Authors: Fangzhou Jiang, Zixiang Jia, Haonan Zheng, Luis C. Ho, Kohei Inayoshi | Summary: We present a statistical study on the formation and growth of black holes (BHs) seeded by gravothermal core-collapse of self-interacting dark matter (SIDM) halos at high redshifts, using a semi-analytical framework based on […]


Continue.. Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Formation and Evolution of Compact Binaries Containing Intermediate Mass Black Holes in Dense Star Clusters`

Kavli Affiliate: Rainer Spurzem | First 5 Authors: Seungjae Lee, Hyung Mok Lee, Ji-hoon Kim, Rainer Spurzem, Jongsuk Hong | Summary: We investigate the evolution of star clusters containing intermediate-mass black hole (IMBH) of $300$ to $5000 mathrm{M}_odot$, focusing on the formation and evolution of IMBH-stellar mass black holes (SBHs; $M_{rm BH} lesssim 10^2 mathrm{M}_odot$) […]


Continue.. Formation and Evolution of Compact Binaries Containing Intermediate Mass Black Holes in Dense Star Clusters`

Galaxy Morphologies at Cosmic Noon with JWST : A Foundation for Exploring Gas Transport with Bars and Spiral Arms

Kavli Affiliate: Jinyi Shangguan | First 5 Authors: Juan M. Espejo Salcedo, Stavros Pastras, Josef Vácha, Claudia Pulsoni, Reinhard Genzel | Summary: How radial flows shape galaxy structure and evolution remains an open question. Internal drivers of such flows, such as bars and spiral arms, known to mediate gas flows in the local Universe, are […]


Continue.. Galaxy Morphologies at Cosmic Noon with JWST : A Foundation for Exploring Gas Transport with Bars and Spiral Arms

Nonlinear Stability of Large-Period Traveling Waves Bifurcating from the Heteroclinic Loop in the FitzHugh-Nagumo Equation

Kavli Affiliate: Ke Wang | First 5 Authors: Ji Li, Ke Wang, Qiliang Wu, Qing Yu, | Summary: A wave front and a wave back that spontaneously connect two hyperbolic equilibria, known as a heteroclinic wave loop, give rise to periodic waves with arbitrarily large spatial periods through the heteroclinic bifurcation. The nonlinear stability of […]


Continue.. Nonlinear Stability of Large-Period Traveling Waves Bifurcating from the Heteroclinic Loop in the FitzHugh-Nagumo Equation