Astrophysics – Page 30 – Kavli Institute Pre-Print Publications

Zapped then Napped? A rapidly quenched remnant leaker candidate with a steep spectroscopic $β_{UV}$ slope at z=8.5

Posted by dbos Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: William M. Baker, Francesco D’Eugenio, Roberto Maiolino, Andrew J. Bunker, Charlotte Simmonds | Summary: We use NIRSpec MSA spectroscopy and NIRCam Photometry to explore the properties of JADES-GS8-RL-1, a rapidly quenched, $z=8.5$ galaxy with a stellar mass of $10^{8.9}M_odot$, a steep blue UV slope, a Balmer break, […]

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A Quasi-Optimal Stacking Method for Up-the-Ramp Readout Images

Posted by dbos January 15, 2025January 30, 2025Peking

Kavli Affiliate: Hu Zhan | First 5 Authors: Guanghuan Wang, Hu Zhan, Zun Luo, Chengqi Liu, Youhua Xu | Summary: The non-destructive readout mode of a detector allows its pixels to be read multiple times during integration, generating a series of "up-the-ramp" images that keep accumulating photons between successive frames. Since the noise is correlated […]

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Cyclical accretion regime change in the slow X-ray pulsar 4U 0114+65 observed with Chandra

Posted by dbos January 15, 2025January 30, 2025MIT

Kavli Affiliate: Norbert Schulz | First 5 Authors: Graciela Sanjurjo-Ferrín, Jose Miguel Torrejón, Konstantin Postnov, Michael Nowak, Jose Joaquín Rodes-Roca | Summary: 4U 0114+65 is a high-mass X-ray binary system formed by the luminous supergiant B1Ia, known as V{*} V662 Cas, and one of the slowest rotating neutron stars (NS) with a spin period of […]

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The putative center in NGC 1052

Posted by dbos January 15, 2025January 30, 2025Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Anne-Kathrin Baczko, Matthias Kadler, Eduardo Ros, Christian M. Fromm, Maciek Wielgus | Summary: Many active galaxies harbor powerful relativistic jets, however, the detailed mechanisms of their formation and acceleration remain poorly understood. To investigate the area of jet acceleration and collimation with the highest available angular […]

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The putative center in NGC 1052

Posted by dbos January 15, 2025Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Anne-Kathrin Baczko, Matthias Kadler, Eduardo Ros, Christian M. Fromm, Maciek Wielgus | Summary: Many active galaxies harbor powerful relativistic jets, however, the detailed mechanisms of their formation and acceleration remain poorly understood. To investigate the area of jet acceleration and collimation with the highest available angular resolution, […]

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Topologically protected edge states in time photonic crystals with chiral symmetry

Posted by dbos January 15, 2025January 30, 2025Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Yukun Yang, Hao Hu, Liangliang Liu, Yihao Yang, Youxiu Yu | Summary: Time photonic crystals are media in which their electromagnetic parameters are modulated periodically in time, showing promising applications in non-resonant lasers and particle accelerators, among others. Traditionally utilized to study space photonic crystals, topological band […]

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Cold Gas and Star Formation in the Phoenix Cluster with JWST

Posted by dbos January 15, 2025MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Michael Reefe, Michael McDonald, Marios Chatzikos, Jerome Seebeck, Richard Mushotzky | Summary: We present integral field unit observations of the Phoenix Cluster with the JWST Mid-infrared Instrument’s Medium Resolution Spectrometer (MIRI/MRS). We focus this study on the molecular gas, dust, and star formation in the brightest cluster […]

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Cold Gas and Star Formation in the Phoenix Cluster with JWST

Posted by dbos January 15, 2025MIT

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Deep inference of simulated strong lenses in ground-based surveys

Posted by dbos January 15, 2025January 30, 2025Chicago

Kavli Affiliate: Joshua Frieman | First 5 Authors: Jason Poh, Ashwin Samudre, Aleksandra Ćiprijanović, Joshua Frieman, Gourav Khullar | Summary: The large number of strong lenses discoverable in future astronomical surveys will likely enhance the value of strong gravitational lensing as a cosmic probe of dark energy and dark matter. However, leveraging the increased statistical […]

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Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks

Posted by dbos January 15, 2025January 30, 2025Peking

Kavli Affiliate: Hu Zhan | First 5 Authors: Feng Shi, Jieyi Tian, Zhejie Ding, Xiaohu Yang, Yizhou Gu | Summary: The measurement of cosmological distances using baryon acoustic oscillations (BAO) is crucial for studying the universe’s expansion. The Chinese Space Station Telescope (CSST) galaxy redshift survey, with its vast volume and sky coverage, provides an […]

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