Astrophysics – Page 359 – Kavli Institute Pre-Print Publications

INTERACT: Achieving Low Sample and Communication Complexities in Decentralized Bilevel Learning over Networks

Posted by klaurent July 27, 2022Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Zhuqing Liu, Xin Zhang, Prashant Khanduri, Songtao Lu, Jia Liu | Summary: In recent years, decentralized bilevel optimization problems have received increasing attention in the networking and machine learning communities thanks to their versatility in modeling decentralized learning problems over peer-to-peer networks (e.g., multi-agent meta-learning, multi-agent reinforcement […]

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Review of Radio Frequency Interference and Potential Impacts on the CMB-S4 Cosmic Microwave Background Survey

Posted by klaurent July 26, 2022August 8, 2022Chicago

Kavli Affiliate: John E. Carlstrom | First 5 Authors: Darcy R. Barron, Amy N. Bender, Ian E. Birdwell, John E. Carlstrom, Jacques Delabrouille | Summary: CMB-S4 will map the cosmic microwave background to unprecedented precision, while simultaneously surveying the millimeter-wave time-domain sky, in order to advance our understanding of cosmology and the universe. CMB-S4 will […]

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Review of Radio Frequency Interference and Potential Impacts on the CMB-S4 Cosmic Microwave Background Survey

Posted by klaurent July 26, 2022Chicago

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Review of Radio Frequency Interference and Potential Impacts on the CMB-S4 Cosmic Microwave Background Survey

Posted by July 26, 2022Chicago

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Detection of Atmospheric Escape from Four Young Mini Neptunes

Posted by klaurent July 26, 2022MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: Michael Zhang, Heather A. Knutson, Fei Dai, Lile Wang, George R. Ricker | Summary: We use Keck/NIRSPEC to survey a sample of of young ($<$1 Gyr), short period mini Neptunes orbiting nearby K dwargs to measure their mass loss via the metastable helium line. We detect […]

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Flux Variations of Cosmic Ray Air Showers Detected by LHAASO-KM2A During a Thunderstorm on 10 June 2021

Posted by klaurent July 26, 2022Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: LHAASO Collaboration, F. Aharonian, Q. An, Axikegu, L. X. Bai | Summary: The Large High Altitude Air Shower Observatory (LHAASO) has three sub-arrays, KM2A, WCDA and WFCTA. The flux variations of cosmic ray air showers were studied by analyzing the KM2A data during the thunderstorm on 10 […]

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High-power laser experiment on developing supercritical shock propagating in homogeneously magnetized plasma of ambient gas origin

Posted by klaurent July 26, 2022Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: S. Matsukiyo, R. Yamazaki, T. Morita, K. Tomita, Y. Kuramitsu | Summary: A developing supercritical collisionless shock propagating in a homogeneously magnetized plasma of ambient gas origin having higher uniformity than the previous experiments is formed by using high-power laser experiment. The ambient plasma is not contaminated […]

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A Gradual Decline of Star Formation since Cluster In-fall: New Kinematic Insights into Environmental Quenching at 0.3 $< z <$ 1.1

Posted by klaurent July 25, 2022MIT

Kavli Affiliate: Michael A. McDonald | First 5 Authors: Keunho J. Kim, Matthew B. Bayliss, Allison G. Noble, Gourav Khullar, Ethan Cronk | Summary: The environments where galaxies reside play a key role in shaping their star formation histories over cosmic time, yet such environmental effects remain elusive at high redshifts. We update this environmental […]

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A Gradual Decline of Star Formation since Cluster In-fall: New Kinematic Insights into Environmental Quenching at 0.3 $< z <$ 1.1

Posted by klaurent July 25, 2022MIT

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A Gradual Decline of Star Formation since Cluster In-fall: New Kinematic Insights into Environmental Quenching at 0.3 $< z <$ 1.1

Posted by dbos July 25, 2022MIT

Kavli Affiliate: Michael A. McDonald | First 5 Authors: Keunho J. Kim, Matthew B. Bayliss, Allison G. Noble, Gourav Khullar, Ethan Cronk | Summary: The environments where galaxies reside crucially shape their star formation histories. We investigate a large sample of 1626 cluster galaxies located within 105 galaxy clusters spanning a large range in redshift […]

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