Results 141 to 150 of about 2,114,962 (287)

H i, FRB, What’s Your z: The First FRB Host Galaxy Redshift from Radio Observations

open access: yesThe Astrophysical Journal Letters
Identification and follow-up observations of the host galaxies of fast radio bursts (FRBs) not only help us understand the environments in which the FRB progenitors reside, but also provide a unique way of probing the cosmological parameters using the ...
M. Glowacki   +12 more
doaj   +1 more source

A Galactic-scale Magnetized Wind around a Normal Star-forming Galaxy

open access: yesThe Astrophysical Journal Letters
Galaxy formation theory identifies superwinds as a key regulator of star formation rates, galaxy growth, and chemical enrichment. Thermal and radiation pressure are known to drive galactic-scale winds in dusty starbursting galaxies (e.g., M82), but ...
A. M. Matthews   +7 more
doaj   +1 more source

A dynamical proximity analysis of interacting galaxy pairs [PDF]

open access: yes
Using the impulsive approximation to study the velocity changes of stars during disk-sphere collisions and a method due to Bottlinger to study the post collision orbits of stars, the formation of various types of interacting galaxies is studied as a ...
Chatterjee, Tapan K.
core   +1 more source

The molecular gas content throughout the low-z merger sequence

open access: yesThe Open Journal of Astrophysics
Exploiting IRAM 30 m CO spectroscopy, we find that SDSS post-merger galaxies display gas fractions and depletion times enhanced by 25-50\%, a mildly increased CO excitation, and standard molecular-to-atomic gas ratios, compared to non-interacting ...
Mark T. Sargent   +7 more
doaj   +1 more source

Self-interacting Dark Matter Interpretation of Crater II

open access: yesThe Astrophysical Journal Letters
The satellite galaxy Crater II of the Milky Way is extremely cold and exceptionally diffuse. These unusual properties are challenging to understand in the standard model of cold dark matter.
Xingyu Zhang   +3 more
doaj   +1 more source

Numerical simulations of interacting disk galaxies [PDF]

open access: yes
Galaxy-galaxy interactions have long attracted many extragalactic astronomers in various aspects. A number of computer simulations performed in the 1970s have successfully reproduced the peculiar morphologies observed in interacting disk galaxies and ...
Noguchi, Masafumi
core   +1 more source

Dissipation of AGN Jets in a Clumpy Interstellar Medium

open access: yesThe Astrophysical Journal
Accreting supermassive black holes frequently power jets that interact with the interstellar medium (ISM)/circumgalactic medium, regulating star formation in the galaxy.
Riju Dutta   +3 more
doaj   +1 more source

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