Astrophysics – Page 252 – Kavli Institute Pre-Print Publications

JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5

Posted by dbos May 29, 2023Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Zhiyuan Ji, Christina C. Williams, Sandro Tacchella, Katherine A. Suess, William M. Baker | Summary: We present a spatially resolved study of stellar populations in 6 galaxies with stellar masses $M_*sim10^{10}M_odot$ at $zsim3.7$ using 14-filter JWST/NIRCam imaging from the JADES and JEMS surveys. The 6 galaxies are […]

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Highly asymmetric probability distribution from a finite-width upward step during inflation

Posted by dbos May 29, 2023Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Ryodai Kawaguchi, Tomohiro Fujita, Misao Sasaki, , | Summary: We study a single-field inflation model in which the inflaton potential has an upward step between two slow-roll regimes by taking into account the finite width of the step. We calculate the probability distribution function (PDF) of the […]

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Astrometric Calibration of the Beijing$-$Arizona Sky Survey

Posted by klaurent May 27, 2023Peking

Kavli Affiliate: Linhua Jiang | First 5 Authors: Xiyan Peng, Zhaoxiang Qi, Tianmeng Zhang, Zhenyu Wu, Zhimin Zhou | Summary: We present the astrometric calibration of the Beijing-Arizona Sky Survey (BASS). The BASS astrometry was tied to the International Celestial Reference Frame via the emph{Gaia} Data Release 2 reference catalog. For effects that were stable […]

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WELL: Applying Bug Detectors to Bug Localization via Weakly Supervised Learning

Posted by klaurent May 27, 2023Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Zhuo Li, Huangzhao Zhang, Zhi Jin, Ge Li, | Summary: Bug localization, which is used to help programmers identify the location of bugs in source code, is an essential task in software development. Researchers have already made efforts to harness the powerful deep learning (DL) techniques to […]

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Cluster Cosmology Without Cluster Finding

Posted by klaurent May 26, 2023Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Enia Xhakaj, Alexie Leauthaud, Johannes Lange, Elisabeth Krause, Andrew Hearin | Summary: We propose that observations of super-massive galaxies contain cosmological constraining power similar to conventional cluster cosmology, and we provide promising indications that the associated systematic errors are comparably easier to control. We consider a […]

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The First LHAASO Catalog of Gamma-Ray Sources

Posted by dbos May 26, 2023Peking

Kavli Affiliate: Li Xin Li | First 5 Authors: Zhen Cao, F. Aharonian, Q. An, Axikegu, Y. X. Bai | Summary: We present the first catalog of very-high energy and ultra-high energy $gamma$-ray sources detected by the Large High Altitude Air Shower Observatory (LHAASO), using 508 days of data collected by the Water Cherenkov Detector […]

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The First LHAASO Catalog of Gamma-Ray Sources

Posted by dbos May 26, 2023Peking

Kavli Affiliate: Li Xin Li | First 5 Authors: Zhen Cao, F. Aharonian, Q. An, Axikegu, Y. X. Bai | Summary: We present the first catalog of very-high energy and ultra-high energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory (LHAASO). The catalog was compiled using 508 days of data collected by […]

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The First LHAASO Catalog of Gamma-Ray Sources

Posted by klaurent May 26, 2023Peking

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Rethinking Diversity in Deep Neural Network Testing

Posted by dbos May 25, 2023Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Zi Wang, Jihye Choi, Ke Wang, Somesh Jha, | Summary: Motivated by the success of traditional software testing, numerous diversity measures have been proposed for testing deep neural networks (DNNs). In this study, we propose a shift in perspective, advocating for the consideration of DNN testing as […]

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Resolving the Binary Components of the Outbursting Protostar HBC 494 with ALMA

Posted by klaurent May 25, 2023Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Pedro Henrique Nogueira, Alice Zurlo, Sebastián Pérez, Camilo González-Ruilova, Lucas A. Cieza | Summary: Episodic accretion is a low-mass pre-main sequence phenomenon characterized by sudden outbursts of enhanced accretion. These objects are classified into two: protostars with elevated levels of accretion that lasts for decades or […]

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