Astrophysics – Page 173 – Kavli Institute Pre-Print Publications

The role of turbulence in high-mass star formation: Subsonic and transonic turbulence are ubiquitously found at early stages

Posted by dbos October 27, 2023November 6, 2023Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Chao Wang, Ke Wang, Feng-Wei Xu, Patricio Sanhueza, Hauyu Baobab Liu | Summary: Context. Traditionally, supersonic turbulence is considered to be one of the most likely mechanisms to slow down the gravitational collapse in dense clumps, thereby enabling the formation of massive stars. However, several recent studies […]

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The role of turbulence in high-mass star formation: Subsonic and transonic turbulence are ubiquitously found at early stages

Posted by dbos October 27, 2023Peking

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Large-scale Foundation Models and Generative AI for BigData Neuroscience

Posted by dbos October 27, 2023Peking

Kavli Affiliate: Ran Wang | First 5 Authors: Ran Wang, Zhe Sage Chen, , , | Summary: Recent advances in machine learning have made revolutionary breakthroughs in computer games, image and natural language understanding, and scientific discovery. Foundation models and large-scale language models (LLMs) have recently achieved human-like intelligence thanks to BigData. With the help […]

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Does or did the supernova remnant Cassiopeia A operate as a PeVatron?

Posted by dbos October 26, 2023Peking

Kavli Affiliate: Li Xin Li | First 5 Authors: Zhen Cao, F. Aharonian, Q. An, Axikegu, Y. X. Bai | Summary: For decades, supernova remnants (SNRs) have been considered the prime sources of Galactic Cosmic rays (CRs). But whether SNRs can accelerate CR protons to PeV energies and thus dominate CR flux up to the […]

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Comprehensive Bayesian analysis of FRB-like bursts from SGR 1935+2154 observed by CHIME/FRB

Posted by dbos October 25, 2023November 6, 2023MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Utkarsh Giri, Bridget C. Andersen, Pragya Chawla, Alice P. Curtin, Emmanuel Fonseca | Summary: The bright millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154 in 2020 April was a landmark event, demonstrating that at least some fast radio burst (FRB) sources could be magnetars. The […]

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Quasithermal GeV neutrinos from neutron-loaded magnetized outflows in core-collapse supernovae: spectra and light curves

Posted by dbos October 25, 2023November 6, 2023Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Jose Alonso Carpio, Nick Ekanger, Mukul Bhattacharya, Kohta Murase, Shunsaku Horiuchi | Summary: Rapidly rotating and strongly magnetized protoneutron stars (PNSs) created in core-collapse supernovae can drive relativistic magnetized winds. Ions and neutrons can be co-accelerated while they remain coupled through elastic collisions. We investigate the nucleosynthesis […]

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Quasithermal GeV neutrinos from neutron-loaded magnetized outflows in core-collapse supernovae: spectra and light curves

Posted by dbos October 25, 2023Tokyo

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Probing extreme black-hole outflows on short timescales via high spectral-resolution X-ray imagers

Posted by dbos October 24, 2023November 6, 2023MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Ciro Pinto, James F. Steiner, Arash Bodaghee, Priyanka Chakraborty, Malgosia Sobolewska | Summary: We investigate outflows and the physics of super-Eddington versus sub-Eddington regimes in black hole systems. Our focus is on prospective science using next-generation high-resolution soft X-ray instruments. We highlight the properties of black hole […]

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Probing extreme black-hole outflows on short timescales via high spectral-resolution X-ray imagers

Posted by klaurent October 24, 2023MIT

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A roadmap to the efficient and robust characterization of temperate terrestrial planet atmospheres with JWST

Posted by dbos October 24, 2023November 6, 2023MIT

Kavli Affiliate: Sara Seager | First 5 Authors: TRAPPIST-1 JWST Community Initiative, :, Julien de Wit, René Doyon, Benjamin V. Rackham | Summary: Ultra-cool dwarf stars are abundant, long-lived, and uniquely suited to enable the atmospheric study of transiting terrestrial companions with JWST. Amongst them, the most prominent is the M8.5V star TRAPPIST-1 and its […]

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