A trio of astrophysicists with Harvard and Smithsonian's Center for Astrophysics has found via computer modeling that the likely reason for the warp and flare of the Milky Way galaxy is a tilt of the dark halo. In their paper ...
An article recently published in the Astrophysical Journal by a team of IAC researchers show that bars in galaxies are rotating much more slowly than had been inferred by previous works.
Astronomy
Feb 8, 2017
1
69
At the center of every galaxy is a supermassive black hole. Beyond a certain size, these become active, emitting huge amounts of radiation, and are then called quasars. It is thought these are activated by the presence of ...
Astronomy
Sep 12, 2023
0
72
A team of astronomers used data from both the NASA/ESA Hubble Space Telescope and ESA's Gaia satellite to directly measure the 3D motions of individual stars in a nearby galaxy. The achieved accuracy is better than anything ...
Astronomy
Nov 27, 2017
5
33
Crater 2, located approximately 380,000 light years from Earth, is one of the largest satellite galaxies of the Milky Way. Extremely cold and with slow-moving stars, Crater 2 has low surface brightness. How this galaxy originated ...
Astronomy
Jun 11, 2024
2
99
(PhysOrg.com) -- Astronomers from the Scottish Universities Physics Alliance (SUPA) have produced a completely new catalogue of ~15,000 groups of galaxies that gives a new insight into dark matter, the material of unknown ...
Astronomy
Apr 21, 2011
3
0
Although dark matter is inherently difficult to observe, an understanding of its properties (even if not its nature) allows astronomers to predict where its effects should be felt. The current understanding is that dark matter ...
Astronomy
Nov 9, 2010
7
0
A study co-led by physicists at UC Riverside and UC Irvine has found that dark matter halos of ultra-diffuse galaxies are very odd, raising questions about physicists' understanding of galaxy formation and the structure of ...
Astronomy
Sep 12, 2022
1
250
One of the successes of the ΛCDM model of the universe is the ability for models to create structures of with scales and distributions similar to those we view in the universe today. Or, at least that’s what astronomers ...
General Physics
Apr 8, 2011
7
0
There's a galaxy out there without apparent stars but largely chock full of dark matter. What's that you say? A galaxy without stars? Isn't that an impossibility? Not necessarily, according to the astronomers who found it ...
Astronomy
Jan 17, 2024
1
25
