# The mass of Beta Pictoris c from Beta Pictoris b orbital motion

no code yet • 22 Sep 2021

From the astrometry of planet b only, we can (i) detect the presence of $\beta$ Pictoris c and (ii) constrain its mass to $10. 04^{+4. 53}_{-3. 10}\, M_{\rm Jup}$.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics

TWEETS

# Dark Matter Superfluidity

no code yet • 22 Sep 2021

In these lectures I describe a theory of dark matter superfluidity developed in the last few years.

Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory

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# The Population of Interstellar Objects Detectable with the LSST and Accessible for $\textit{In Situ}$ Rendezvous with Various Mission Designs

no code yet • 21 Sep 2021

The recently discovered population of interstellar objects presents us with the opportunity to characterize material from extrasolar planetary and stellar systems up close.

Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics

TWEETS

# The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part II: Moist Cases -- The Two Waterworlds

no code yet • 23 Sep 2021

To identify promising exoplanets for atmospheric characterization and to make the best use of observational data, a thorough understanding of their atmospheres is needed.

Earth and Planetary Astrophysics Atmospheric and Oceanic Physics

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# The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part III: Simulated Observables -- The return of the spectrum

no code yet • 23 Sep 2021

The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) is a community project that aims to quantify how dfferences in general circulation models (GCMs) could impact the climate prediction for TRAPPIST-1e and, subsequently its atmospheric characterization in transit.

Earth and Planetary Astrophysics Atmospheric and Oceanic Physics

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# The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part I: Dry Cases -- The fellowship of the GCMs

no code yet • 23 Sep 2021

Here we report the results of the first part of the THAI (TRAPPIST-1 Habitable Atmosphere Intercomparison) project, which compares the results of 3D numerical simulations performed with four state-of-the-art Global Climate Models (ExoCAM, LMD-Generic, ROCKE-3D, Unified Model) for TRAPPIST-1e.

Earth and Planetary Astrophysics Atmospheric and Oceanic Physics

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# Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data

no code yet • 20 Sep 2021

Three narrow sub-bands are searched for each target, centered on harmonics of the measured spin frequency.

High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology

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# C/2014 UN271 (Bernardinelli-Bernstein): the nearly spherical cow of comets

no code yet • 20 Sep 2021

C/2014 UN271 (Bernardinelli-Bernstein) is a comet incoming from the Oort cloud which is remarkable in having the brightest (and presumably largest) nucleus of any well-measured comet, and having been discovered at heliocentric distance $r_h\approx29$ au farther than any Oort-cloud member.

Earth and Planetary Astrophysics

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# Rapid stellar and binary population synthesis with COMPAS

21 Sep 2021

COMPAS (Compact Object Mergers: Population Astrophysics and Statistics, https://compas. science) is a public rapid binary population synthesis code.

Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena Solar and Stellar Astrophysics

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# Tidal Distortions in NGC1052-DF2 and NGC1052-DF4: Independent Evidence for a Lack of Dark Matter

no code yet • 20 Sep 2021

Such low mass diffuse objects in a group environment are easily disrupted and are expected to show evidence of tidal distortions.

Astrophysics of Galaxies

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