Latest Research

Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations I: Black Hole - Neutron Star Mergers

3 Mar 2021FloorBroekgaarden/BlackHole-NeutronStar

Moreover, we find that massive NSs $ > 2\, M_{\odot}$ are expected to be commonly detected in BHNS mergers in almost all our model variations.

HIGH ENERGY ASTROPHYSICAL PHENOMENA

0
03 Mar 2021

Multi-Messenger Astrophysics with the Cosmic Neutrino Background

1 Mar 2021gemyxzhang/cnb-anisotropies

The massive neutrinos of the Cosmic Neutrino Background (C$\nu$B) are fundamental ingredients of the radiation-dominated early universe and are important non-relativistic probes of the large-scale structure formation in the late universe.

COSMOLOGY AND NONGALACTIC ASTROPHYSICS INSTRUMENTATION AND METHODS FOR ASTROPHYSICS

0
01 Mar 2021

Markov chain Monte Carlo analyses of the flux ratios of B, Be and Li with the DRAGON2 code

26 Feb 2021tospines/Customised-DRAGON2_beta

The uncertainties in the evaluation of the spectra of these secondary cosmic rays, due to spallation cross sections, have been taken into account introducing a scale factor as a nuisance parameter in the fits, assuming that this uncertainty is mostly due to the normalization of the cross sections parametrizations.

HIGH ENERGY ASTROPHYSICAL PHENOMENA

0
26 Feb 2021

Exploring the relation between dust mass and galaxy properties using Dusty SAGE

25 Feb 2021dptriani/dusty-sage

In addition to tracing the standard galaxy properties, Dusty SAGE also tracks cold dust mass in the interstellar medium (ISM), hot dust mass in the halo and dust mass ejected by feedback activity.

ASTROPHYSICS OF GALAXIES

5
25 Feb 2021

A coplanar circumbinary protoplanetary disk in the TWA 3 triple M dwarf system

23 Feb 2021iancze/TWA-3-orbit

To better understand the influence of the B orbit on the TWA 3A circumbinary disk, we performed SPH simulations of the system and found that the outer edge of the gas disk ($r_\mathrm{outer}=8. 5\pm0. 2$ au) is most consistent with truncation from a coplanar, circular or moderately eccentric orbit, supporting the preference from the joint orbital fit.

0
23 Feb 2021

The Mega-MUSCLES Spectral Energy Distribution Of TRAPPIST-1

22 Feb 2021davidjwilson/Trappist-1_MM

We present a 5A-100um Spectral Energy Distribution (SED) of the ultracool dwarf star TRAPPIST-1, obtained as part of the Mega-MUSCLES Treasury Survey.

SOLAR AND STELLAR ASTROPHYSICS

0
22 Feb 2021

Bayesian Cross-Matching of High Proper Motion Stars in Gaia DR2 and Photometric Metallicities for $\sim$1.7 million K and M Dwarfs

20 Feb 2021imedan/bayes_match

For dwarfs of $3500<T_{eff}<5280$ K, we use metallicity values of 4, 378 stars from APOGEE and Hejazi et al. (2020) to calibrate the relationship, producing results with a $1\sigma$ precision of 0. 12 dex and few systematic errors.

SOLAR AND STELLAR ASTROPHYSICS ASTROPHYSICS OF GALAXIES INSTRUMENTATION AND METHODS FOR ASTROPHYSICS

0
20 Feb 2021

The Physics of Falling Raindrops in Diverse Planetary Atmospheres

18 Feb 2021kaitlyn-loftus/rainprops

The evolution of a single raindrop falling below a cloud is governed by fluid dynamics and thermodynamics fundamentally transferable to planetary atmospheres beyond modern Earth's.

EARTH AND PLANETARY ASTROPHYSICS ATMOSPHERIC AND OCEANIC PHYSICS

4
18 Feb 2021

Constrained realizations of 2MRS density and peculiar velocity fields: growth rate and local flow

15 Feb 2021rlilow/CORAS

The total reconstructed velocity field at the position of the LG, smoothed with a $1 \; h^{-1} \, \mathrm{Mpc}$ Gaussian, is $552 \pm 71 \; \mathrm{km} \, \mathrm{s}^{-1}$ towards $l = 274. 3 \pm 7. 9^\circ$, $b = 33. 9 \pm 8. 1^\circ$, in good agreement with the observed CMB dipole.

COSMOLOGY AND NONGALACTIC ASTROPHYSICS

0
15 Feb 2021

Deep learning approach for identification of HII regions during reionization in 21-cm observations

12 Feb 2021micbia/SegU-Net

We also show that SegU-Net can be used to recover various topological summary statistics, such as size distributions and Betti numbers, with a relative difference of only a few per cent.

INSTRUMENTATION AND METHODS FOR ASTROPHYSICS

2
12 Feb 2021