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39 papers · 1 filter
Emergence of vortices at the edges of planet-driven gaps in protoplanetary discs
Nicolas P. Cimerman, Roman R. Rafikov
Young planets embedded in protoplanetary discs (PPDs) excite spiral density waves, which propagate, shock and deposit angular momentum in the disc. This results in gap opening arou…
Astrophysical Constraints from the SARAS3 non-detection of the Cosmic Dawn Sky-Averaged 21-cm Signal
H. T. J. Bevins, A. Fialkov, E. de Lera Acedo +4
Observations of the redshifted 21-cm line of atomic hydrogen have resulted in several upper limits on the 21-cm power spectrum and a tentative detection of the sky-averaged signal…
Realizability of Iso- Processes via Effective Pair Interactions
Haina Wang, Frank H. Stillinger, Salvatore Torquato
An outstanding problem in statistical mechanics is the determination of whether prescribed functional forms of the pair correlation function [or equivalently, structure fa…
Prograde and Retrograde Gas Flow around Disk-embedded Companions: Dependence on Eccentricity, Mass and Disk Properties
Yi-Xian Chen, Avery Bailey, James M. Stone +1
We apply 3D hydrodynamical simulations to study the rotational aspect of gas flow patterns around eccentric companions embedded in an accretion disk around its primary host. We sam…
First results from the JWST Early Release Science Program Q3D: Turbulent times in the life of a extremely red quasar revealed by NIRSpec IFU
Dominika Wylezalek, Andrey Vayner, David S. N. Rupke +20
Extremely red quasars, with bolometric luminosities exceeding erg s, are a fascinating high-redshift population that is absent in the local universe. They are the…
Low-density star cluster formation: discovery of a young faint fuzzy on the outskirts of the low-mass spiral galaxy NGC 247
Aaron J. Romanowsky, Søren S. Larsen, Alexa Villaume +21
The classical globular clusters found in all galaxy types have half-light radii of 2-4 pc, which have been tied to formation in the dense cores of giant molecular…