Using the Karl G. Jansky Very Large Array (VLA) and the upgraded Giant Meter Radio Telescope (uGMRT), astronomers have conducted multi-wavelength observations of a galaxy merger remnant known as Mrk 212. Results of this observational ...
Galaxies die quickly—that is the conclusion of a new study that examines the mechanism that switches galaxies from an active star-forming phase to one of quiescence.
Astronomy
Oct 29, 2020
2
20
Using data from the Rossi X-ray Timing Explorer (RXTE) satellite, astronomers from the Florida Institute of Technology have discovered a quasi-periodic oscillation (QPO) in the galaxy NGC 4945. The finding, reported in a ...
Black holes can expel a thousand times more matter than they capture. The mechanism that governs both ejection and capture is the accretion disk, a vast mass of gas and dust spiraling around the black hole at extremely high ...
Astronomy
Sep 2, 2020
12
1479
The nebula known as W51 is one of the most active star-forming regions in the Milky Way galaxy. First identified in 1958 by radio telescopes, it makes a rich cosmic tapestry in this image from NASA's recently retired Spitzer ...
Astronomy
Aug 26, 2020
0
259
Not so long ago, astronomers mapped a galaxy far, far away using radio waves and found it has a strikingly familiar shape. In the process, they discovered the object, called TXS 0128+554, experienced two powerful bouts of ...
Astronomy
Aug 25, 2020
0
281
Using the ALMA Observatory, an international team of astronomers has conducted an observational campaign of interstellar medium (ISM) in a host galaxy of a high-redshift quasar known as SDSS J231038.88+185519.7 (SDSS J2310+1855 ...
A study led by researchers at the Instituto de Astrofísica de Canarias (IAC) comparing the discs of several pairs of spiral galaxies, active and non-active, concludes that in the active discs, the rotational motion of the ...
Astronomy
Aug 3, 2020
1
238
A Clemson University scientist has joined forces with an international team of astronomers to identify periodic gamma-ray emissions from 11 active galaxies, paving the way for future studies of unconventional galaxies that ...
Astronomy
Jun 19, 2020
8
1837
Active galactic nuclei (AGNs) play a major role in galaxy evolution. Astronomers from SRON and RuG have now used a record-setting sample of galaxies to confirm that galaxy mergers have a positive effect on igniting AGNs. ...
Astronomy
May 29, 2020
6
501
