Results 21 to 30 of about 169,400 (221)

Dark matter and generation of galactic magnetic fields [PDF]

, 2013
A new scenario for creation of galactic magnetic fields is proposed which is operative at the cosmological epoch of the galaxy formation, and which relies on unconventional properties of dark matter. Namely, it requires existence of feeble but long range
Berezhiani, Zurab, Dolgov, A. D., Tkachev, I. I.   +2 more
core   +2 more sources

Galactic cannibalism and CDM density profiles [PDF]

, 2004
Using N-body simulations we show that the process of formation of the brightest cluster galaxy through dissipationless galactic cannibalism can affect the inner cluster dark matter density profile.
Barnes, Bartelmann, Bertin, Binney, Blumenthal, C. Nipoti, de Blok, Dehnen, Dehnen, Dubinski, El-Zant, Gavazzi, Ghigna, Gnedin, Hernquist, Jesseit, Kazantzidis, Kelson, Kochanek, L. Ciotti, Lewis, Londrillo, M. Stiavelli, Ma, Merritt, Mo, Moore, Natarajan, Navarro, Navarro, Nipoti, Nipoti, Nipoti, Ostriker, Power, Ricotti, Rosati, Salucci, Sand, Sand, Simon, Smith, Spergel, Springel, Subramanian, T. Treu, Treu, van den Bosch, Zhang   +48 more
core   +2 more sources

Studying the Patterns of the Universe

Open Astronomy, 2011
The SDSS galaxy catalog is one of the best databases for galaxy distribution studies. The SDSS DR8 data is used to construct the galaxy cluster catalog.
Sepp T., Tempel E., Gramann M., Nurmi P., Haupt M.   +4 more
doaj   +1 more source

Disk Galaxies Are Self-similar: The Universality of the H i-to-Halo Mass Ratio for Isolated Disks

The Astrophysical Journal Letters, 2023
Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the nature of dark matter.
Marie Korsaga, Benoit Famaey, Jonathan Freundlich, Lorenzo Posti, Rodrigo Ibata, Christian Boily, Katarina Kraljic, D. Esparza-Arredondo, C. Ramos Almeida, Jean Koulidiati   +9 more
doaj   +1 more source

On the Possible Asymmetry in Gamma Rays from Andromeda Due to Inverse Compton Scattering of Star Light on Electrons from Dark Matter Annihilation

Galaxies, 2023
Dark matter is a popular candidate to a new source of primary-charged particles, especially positrons in cosmic rays, which are proposed to account for observable anomalies.
Konstantin Belotsky, Maxim Solovyov
doaj   +1 more source

Detection of anti-correlation of hot and cold baryons in galaxy clusters

Nature Communications, 2019
Galaxy clusters contain vast amount of dark matter and baryonic matter. Here the authors show the observational detection of the anti-correlation of gas mass and stellar mass observables in the most massive galaxy clusters, indicating such clusters ...
Arya Farahi, Sarah L. Mulroy, August E. Evrard, Graham P. Smith, Alexis Finoguenov, Hervé Bourdin, John E. Carlstrom, Chris P. Haines, Daniel P. Marrone, Rossella Martino, Pasquale Mazzotta, Christine O’Donnell, Nobuhiro Okabe   +12 more
doaj   +1 more source

The Distribution of Dark Matter in a Ringed Galaxy [PDF]

, 1996
Outer rings are located at the greatest distance from the galaxy center of any feature resonant with a bar. Because of their large scale, their morphology is sensitive to the distribution of the dark matter in the galaxy.
A. C. Quillen, Begeman K. G., Buta R., J. A. Frogel, Sackett P. D., van der Kruit P. C.   +5 more
core   +3 more sources

Updated Results on the Galaxy-Halo Connection from Satellite Kinematics in SDSS

, 2018
We present new results on the relationship between central galaxies and dark matter haloes inferred from observations of satellite kinematics in the Sloan Digital Sky Survey (SDSS) DR7.
Bosch, Frank C. van den, Lange, Johannes U., Villarreal, Antonio S., Wang, Kuan, Zentner, Andrew R.   +4 more
core   +1 more source

Shadows of Sgr A$$^{*}$$ ∗ black hole surrounded by superfluid dark matter halo

European Physical Journal C: Particles and Fields, 2020
In this paper we construct a black hole solution surrounded by superfluid dark matter and baryonic matter, and study their effects on the shadow images of the Sgr A$$^{*}$$ ∗ black hole.
Kimet Jusufi, Mubasher Jamil, Tao Zhu
doaj   +1 more source

Is Self-Interacting Dark Matter Undergoing Dark Fusion?

, 2017
We suggest that two-to-two dark matter fusion may be the relaxation process that resolves the small-scale structure problems of the cold collisionless dark matter paradigm.
McDermott, Samuel D.
core   +1 more source