Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Lindsay M. Berkhout, Daniel C. Jacobs, Zuhra Abdurashidova, Tyrone Adams, James E. Aguirre | Summary: This paper presents the design and deployment of the Hydrogen Epoch of Reionization Array (HERA) phase II system. HERA is designed as a staged experiment targeting 21 cm emission measurements of […]


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The Orbital Geometries and Stellar Obliquities of Exoplanet-Hosting Multi-Star Systems

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Malena Rice, Konstantin Gerbig, Andrew Vanderburg, , | Summary: The current orbital geometries of exoplanet systems offer a fossilized record of the systems’ dynamical histories. A particularly rich set of dynamical mechanisms is available to exoplanets residing in multi-star systems, which may have their evolution shaped by […]


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On the Particle Acceleration Mechanisms in a Double Radio Relic Galaxy Cluster, Abell 1240

Kavli Affiliate: Eric Miller | First 5 Authors: Arnab Sarkar, Felipe Andrade-Santos, Reinout J. van Weeren, Ralph P. Kraft, Duy N. Hoang | Summary: We present a 368 ks deep Chandra observation of Abell~1240, a binary merging galaxy cluster at a redshift of 0.195 with two Brightest Cluster Galaxies (BCGs) may have passed each other […]


Continue.. On the Particle Acceleration Mechanisms in a Double Radio Relic Galaxy Cluster, Abell 1240

Stability of 20 Biogenic Amino Acids in Concentrated Sulfuric Acid: Implications for the Habitability of Venus’ Clouds

Kavli Affiliate: Sara Seager | First 5 Authors: Maxwell D. Seager, Sara Seager, William Bains, Janusz J. Petkowski, | Summary: Scientists have long speculated about the potential habitability of Venus, not at the 700K surface, but in the cloud layers located at 48-60 km altitudes, where temperatures match those found on Earth’s surface. However, the […]


Continue.. Stability of 20 Biogenic Amino Acids in Concentrated Sulfuric Acid: Implications for the Habitability of Venus’ Clouds

A New Population of Mid-Infrared-Selected Tidal Disruption Events: Implications for Tidal Disruption Event Rates and Host Galaxy Properties

Kavli Affiliate: Erin Kara | First 5 Authors: Megan Masterson, Kishalay De, Christos Panagiotou, Erin Kara, Iair Arcavi | Summary: Most tidal disruption events (TDEs) are currently found in time-domain optical and soft X-ray surveys, both of which are prone to significant obscuration. The infrared (IR), however, is a powerful probe of dust-enshrouded environments, and […]


Continue.. A New Population of Mid-Infrared-Selected Tidal Disruption Events: Implications for Tidal Disruption Event Rates and Host Galaxy Properties

Observational Signatures of AGN Feedback in the Morphology and the Ionization States of Milky Way-like Galaxies

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Nadia Qutob, Razieh Emami, Kung-Yi Su, Randall Smith, Lars Hernquist | Summary: We make an in-depth analysis of different AGN jet models’ signatures, inducing quiescence in galaxies with a halo mass of $10^{12} M_odot$. Three jet models, including cosmic ray-dominant, hot thermal, and precessing kinetic jets, are […]


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Morphologies of Bright Complex Fast Radio Bursts with CHIME/FRB Voltage Data

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Jakob T. Faber, Daniele Michilli, Ryan Mckinven, Jianing Su, Aaron B. Pearlman | Summary: We present the discovery of twelve thus far non-repeating fast radio burst (FRB) sources, detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. These sources were selected from a database comprising […]


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Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days

Kavli Affiliate: Ronald Remillard | First 5 Authors: Yanan Wang, Dheeraj R. Pasham, Diego Altamirano, Andres Gurpide, Noel Castro Segura | Summary: The tidal disruption of a star around a supermassive black hole (SMBH) offers a unique opportunity to study accretion onto a SMBH on a human-timescale. We present results from our 1000+ days NICER, […]


Continue.. Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days

Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days

Kavli Affiliate: Ronald Remillard | First 5 Authors: Yanan Wang, Dheeraj R. Pasham, Diego Altamirano, Andres Gurpide, Noel Castro Segura | Summary: The tidal disruption of a star around a supermassive black hole (SMBH) offers a unique opportunity to study accretion onto a SMBH on a human-timescale. We present results from our 1000+ days NICER, […]


Continue.. Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days