Metrics of research impact in astronomy: Predicting later impact from metrics measured 10-15 years after the PhD

no code yet • 27 Oct 2021

This paper calibrates how metrics derivable from the SAO/NASA Astrophysics Data System can be used to estimate the future impact of astronomy research careers and thereby to inform decisions on resource allocation such as job hires and tenure decisions.

Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics Solar and Stellar Astrophysics Digital Libraries

TWEETS

A new mechanism for primordial black hole formation during reheating

no code yet • 27 Oct 2021

The Reheating process at the end of inflation is often modeled by an oscillating scalar field which shows a background dust-like behaviour, prompting the analysis of gravitational collapse and black hole formation in this era to be approached by the spherical collapse of standard structure formation.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

TWEETS

The ASTRID simulation: the evolution of Supermassive Black Holes

no code yet • 27 Oct 2021

Astrid statistically models BH gas accretion and AGN feedback to their environments, applies a power-law distribution for BH seed mass $M_{\rm sd}$, uses a dynamical friction model for BH dynamics and executes a physical treatment of BH mergers.

Astrophysics of Galaxies

TWEETS

Globular Cluster Intrinsic Iron Abundance Spreads: II. Protocluster Metallicities and the Age-Metallicity Relations of Milky Way Progenitors

no code yet • 27 Oct 2021

Intrinsic iron abundance spreads in globular clusters, although usually small, are very common, and are signatures of self enrichment: some stars within the cluster have been enriched by supernova ejecta from other stars within the same cluster.

Astrophysics of Galaxies

TWEETS

The density distributions of cosmic structures: impact of the local environment on weak-lensing convergence

no code yet • 27 Oct 2021

We also calculate the constraints on the cosmological parameters as a function of redshift from the theoretical and numerical study of the angular power spectrum of WL convergence.

Cosmology and Nongalactic Astrophysics

TWEETS