Showing 2021Show all

428 papers · 1 filter

astro-ph.EP2021★ 11 cited

Sensitivity of the Roman Coronagraph Instrument to Exozodiacal Dust

Ewan S Douglas, John Debes, Bertrand Mennesson +7

Exozodiacal dust, warm debris from comets and asteroids in and near the habitable zone of stellar systems, reveals the physical processes that shape planetary systems. Scattered li…

q-bio.OT2021★ 4 cited

Beyond Low Earth Orbit: Biological Research, Artificial Intelligence, and Self-Driving Labs

Lauren M. Sanders, Jason H. Yang, Ryan T. Scott +53

Space biology research aims to understand fundamental effects of spaceflight on organisms, develop foundational knowledge to support deep space exploration, and ultimately bioengin…

q-bio.OT2021★ 8 cited

Beyond Low Earth Orbit: Biomonitoring, Artificial Intelligence, and Precision Space Health

Ryan T. Scott, Erik L. Antonsen, Lauren M. Sanders +53

Human space exploration beyond low Earth orbit will involve missions of significant distance and duration. To effectively mitigate myriad space health hazards, paradigm shifts in d…

astro-ph.GA2021★ 2 cited

The Massive and Distant Clusters of WISE Survey XI: Stellar Mass Fractions and Luminosity Functions of MaDCoWS Clusters at

Bandon Decker, Mark Brodwin, Ripon Saha +14

We present stellar mass fractions and composite luminosity functions (LFs) for a sample of \Ncl\ clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS) at a redshi…

astro-ph.GA2021★ 18 cited

Non-ideal MHD simulations of subcritical prestellar cores with non-equilibrium chemistry

Aris Tritsis, Christoph Federrath, Karen Willacy +1

Non-ideal magnetohydrodynamic (MHD) effects are thought to be gravity's closest ally in overcoming the support of magnetic fields and in forming stars. Here, we modify the publicly…

astro-ph.EP2021★ 24 cited

Distant formation and differentiation of outer main belt asteroids and carbonaceous chondrite parent bodies

H. Kurokawa, T. Shibuya, Y. Sekine +4

Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near-infrared observations at wavelengths of $<2…

astro-ph.SR2021★ 26 cited

Observational identification of a sample of likely recent Common-Envelope Events

Theo Khouri, Wouter Vlemmings, Daniel Tafoya +5

One of the most poorly understood stellar evolutionary paths is that of binary systems undergoing common-envelope evolution, when the envelope of a giant star engulfs the orbit of…

astro-ph.EP2021★ 1 cited

Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging

Xiao-Jia Xie, Subo Dong, Yossi Shvartzvald +10

We constrain the host-star flux of the microlensing planet OGLE-2014-BLG-0676Lb using adaptive optics (AO) images taken by the Magellan and Keck telescopes. We measure the flux of…

astro-ph.CO2021★ 38 cited

The DES view of the Eridanus supervoid and the CMB Cold Spot

A. Kovács, N. Jeffrey, M. Gatti +119

The Cold Spot is a puzzling large-scale feature in the Cosmic Microwave Background temperature maps and its origin has been subject to active debate. As an important foreground str…

gr-qc2021★ 53 cited

Detection and characterization of instrumental transients in LISA Pathfinder and their projection to LISA

Quentin Baghi, Natalia Korsakova, Jacob Slutsky +3

The LISA Pathfinder (LPF) mission succeeded outstandingly in demonstrating key technological aspects of future space-borne gravitational-wave detectors, such as the Laser Interfero…

astro-ph.HE2021★ 19 cited

Analysis of a Tau Neutrino Origin for the Near-Horizon Air Shower Events Observed by the Fourth Flight of the Antarctic Impulsive Transient Antenna (ANITA)

R. Prechelt, S. A. Wissel, A. Romero-Wolf +65

We study in detail the sensitivity of the Antarctic Impulsive Transient Antenna (ANITA) to possible point source fluxes detected via -lepton-induced air showers. This inve…

astro-ph.SR2021★ 38 cited

ATOMIUM: ALMA tracing the origins of molecules in dust forming oxygen rich M-type stars: Motivation, sample, calibration, and initial results

C. A. Gottlieb, L. Decin, A. M. S. Richards +33

This overview paper presents ATOMIUM, a Large Programme in Cycle 6 with the Atacama Large Millimeter-submillimeter Array (ALMA). The goal of ATOMIUM is to understand the dynamics a…

astro-ph.EP2021★ 8 cited

Polarization spectrum of near infrared zodiacal light observed with CIBER

Kohji Takimoto, Toshiaki Arai, Shuji Matsuura +14

We report the first measurement of the zodiacal light (ZL) polarization spectrum in the near-infrared between 0.8 and 1.8 m. Using the low-resolution spectrometer (LRS) on board…

astro-ph.EP2021★ 3 cited

An Imaging Search for Post-Main-Sequence Planets of Sirius B

Miles Lucas, Michael Bottom, Garreth Ruane +1

We present deep imaging of Sirius B, the closest and brightest white dwarf, to constrain post-main-sequence planetary evolution in the Sirius system. We use Keck/NIRC2 in L'-band (…

astro-ph.EP2021★ 52 cited

A wide-orbit giant planet in the high-mass b Centauri binary system

Markus Janson, Raffaele Gratton, Laetitia Rodet +24

Planet formation occurs around a wide range of stellar masses and stellar system architectures. An improved understanding of the formation process can be achieved by studying it ac…

cond-mat.supr-con2021★ 38 cited

The thermally-coupled imager: A scalable readout architecture for superconducting nanowire single photon detectors

Adam N. McCaughan, Yao Zhai, Boris Korzh +4

Although superconducting nanowire single-photon detectors (SNSPDs) are a promising technology for quantum optics, metrology, and astronomy, they currently lack a readout architectu…

astro-ph.EP2021★ 15 cited

Hypotheses for Triton's Plumes: New Analyses and Future Remote Sensing Tests

Jason D. Hofgartner, Samuel P. D. Birch, Julie Castillo +14

At least two active plumes were observed on Neptune's moon Triton during the Voyager 2 flyby in 1989. Models for Triton's plumes have previously been grouped into five hypotheses,…

astro-ph.IM2021

The InSight HP Penetrator (Mole) on Mars: Soil Properties Derived From the Penetration Attempts and Related Activities

T. Spohn, T. L. Hudson, E. Marteau +31

The NASA InSight Lander on Mars includes the Heat Flow and Physical Properties Package HP to measure the surface heat flow of the planet. The package uses temperature sensors t…

physics.optics2021★ 14 cited

Cavity-Enhanced Vernier Spectroscopy with a Chip-Scale Mid-Infrared Frequency Comb

Lukasz A. Sterczewski, Tzu-Ling Chen, Douglas C. Ober +7

Chip-scale optical frequency combs can provide broadband spectroscopy for diagnosing complex organic molecules. They are also promising as miniaturized laser spectrometers in appli…

astro-ph.EP2021★ 11 cited

A hot Mars-sized exoplanet transiting an M dwarf

Caleb I. Cañas, Suvrath Mahadevan, William D. Cochran +21

We validate the planetary nature of an ultra-short period planet orbiting the M dwarf KOI-4777. We use a combination of space-based photometry from Kepler, high-precision, near-inf…

astro-ph.HE2021★ 2 cited

A Matched Survey for the Enigmatic Low Radio Frequency Transient ILT J225347+862146

Yuping Huang, Marin M. Anderson, Gregg Hallinan +3

Discovered in 2011 with LOFAR, the Jy low-frequency radio transient ILT J225347+862146 heralds a potentially prolific population of radio transients at MHz. However, su…

astro-ph.IM2021★ 72 cited

The InSight HP mole on Mars: Lessons learned from attempts to penetrate to depth in the Martian soil

T. Spohn, T. L. Hudson, L. Witte +13

The NASA InSight mission payload includes the Heat Flow and Physical Properties Package HP to measure the surface heat flow. The package was designed to use a small penetrator…

gr-qc2021★ 13 cited

Navigating stellar wobbles for imaging with the solar gravitational lens

Slava G. Turyshev, Viktor T. Toth

The solar gravitational lens (SGL) offers unique capabilities for high-resolution imaging of faint, distant objects, such as exoplanets. In the near future, a spacecraft carrying a…

quant-ph2021★ 42 cited

Improved heralded single-photon source with a photon-number-resolving superconducting nanowire detector

Samantha I. Davis, Andrew Mueller, Raju Valivarthi +9

Deterministic generation of single photons is essential for many quantum information technologies. A bulk optical nonlinearity emitting a photon pair, where the measurement of one…