Results 11 to 20 of about 12,706 (233)

Interactions as a driver of galaxy evolution

open access: yesPhilosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2000
14 pages, LaTeX, 5 PS figures.
François Schweizer
openaire   +4 more sources

Janus kinase 2 inhibition by pacritinib as potential therapeutic target for liver fibrosis

open access: yesHepatology, EarlyView., 2022
Diagram of the activation of the profibrotic and procontractile Janus kinase 2 (JAK2)/Ras homolog family member A/Rho‐kinase pathway and the inhibition of phosphorylated JAK2 by pacritinib to inhibit hepatic stellate cell activity. Abstract Background and Aims Janus kinase 2 (JAK2) signaling is increased in human and experimental liver fibrosis with ...
Sandra Torres   +21 more
wiley   +1 more source

Nests of Interacting Galaxies: What is it? [PDF]

open access: yesSymposium - International Astronomical Union, 1987
Kinematical and photometric studies of nests of interacting galaxies are described. Velocity fields of 22 nests were obtained using the 6-meter telescope of the Special Astronomical Observatory of Sciences Academy of USSR. UBV-photometry carried out with 125-cm telescope of Sternberg Institute has shown that the majority of nests is blue and undergoes ...
V.P. Arkhipova   +3 more
openaire   +1 more source

Evolution of Galaxies Through Their Interactions [PDF]

open access: yesSymposium - International Astronomical Union, 1996
We investigated how the encounters between galaxies change their mass M and velocity dispersion σ. We carried out a series of direct N-body simulation of encounters of two spherical galaxies. In Figure 1, the relative change of energy ΔE/E are plotted against that of mass ΔM/M for various initial conditions.
Y. Funato, J. Marino
openaire   +1 more source

On the Effects of Local Environment on Active Galactic Nucleus (AGN) in the Horizon Run 5 Simulation

open access: yesThe Astrophysical Journal, 2023
We use the Horizon Run 5 cosmological simulation to study the effect of galaxy intrinsic properties and the local environment on active galactic nuclei (AGNs) characterized by their threshold of the accretion rate.
Ankit Singh   +8 more
doaj   +1 more source

A Multiwavelength Study of Active Galactic Nuclei in Post-merger Remnants

open access: yesThe Astrophysical Journal, 2023
We investigate the role of galaxy mergers in triggering active galactic nuclei (AGN) in the nearby universe. Our analysis is based on a sample of 79 post-merger remnant galaxies with deep X-ray observations from Chandra/XMM-Newton capable of detecting a ...
Wenhao Li   +11 more
doaj   +1 more source

Cosmic-Ray Propagation and Interactions in the Galaxy [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 2007
We survey the theory and experimental tests for the propagation of cosmic rays in the Galaxy up to energies of 1015eV. A guide to the previous reviews and essential literature is given, followed by an exposition of basic principles. The basic ideas of cosmic-ray propagation are described, and the physical origin of its processes is explained.
Strong, A., Moskalenko, I., Ptuskin, V.
openaire   +3 more sources

FAST Reveals New Evidence for M94 as a Merger

open access: yesThe Astrophysical Journal, 2023
We report the first high-sensitivity H i observation toward the spiral galaxy M94 with the Five-hundred-meter Aperture Spherical radio Telescope. From these observations, we discovered that M94 has a very extended H i disk, twice larger than that ...
Ruilei Zhou   +6 more
doaj   +1 more source

Self-interacting dark matter on small and large scales

open access: yesSciPost Physics Proceedings, 2023
In the self-interacting dark matter paradigm (hereafter SIDM), dark matter (DM) is assumed to have non-gravitational interactions with itself. SIDM has been constrained by observations of galaxy clusters. More recently, measurements of large DM densities
Camila A. Correa
doaj   +1 more source

Galaxy Zoo: quantifying morphological indicators of galaxy interaction★ [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2012
We use Galaxy Zoo 2 visual classifications to study the morphological signatures of interaction between similar-mass galaxy pairs in the Sloan Digital Sky Survey. We find that many observable features correlate with projected pair separation; not only obvious indicators of merging, disturbance and tidal tails, but also more regular features, such as ...
Casteels, Kevin. R. V.   +8 more
openaire   +4 more sources

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