Results 51 to 60 of about 612 (190)

How do galaxies populate dark matter haloes? [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
11 pages, 7 figures; revisions to both text and figures; matches version submitted to ...
Guo, Q., White, S., Li, C., Boylan-Kolchin, M.   +3 more
openaire   +3 more sources

Survey on Visualization of Information Diffusion over Networks

Computer Graphics Forum, EarlyView.
Abstract Information Diffusion (ID) describes how a value (e.g., a pathogen, a rumor, a packet) spreads through an underlying “medium” network of elements (e.g., a social or computer network). Understanding the information diffusion process is essential to predicting trends, controlling misinformation, and enhancing decision‐making as well as ...
T. Baumgartl, M. Sondag, V. Filipov, M. Tuscher, S. Rajendran, S. Miksch, D. Archambault, A. Arleo, T. von Landesberger   +8 more
wiley   +1 more source

Dynamics of dwarf-spheroidals and the dark matter halo of the galaxy [PDF]

New Astronomy, 2007
Based on the observed paucity of the dwarf spheroidal (dSph) satellites of the Milky Way at small Galactocentric distances, we put forward the hypothesis that subsequent to the formation of the Milky Way and its satellites, those dSphs that had orbits with small perigalacticons were tidally disrupted, leaving behind a population that now has a ...
Cowsik, R., Ratnam, Charu, Bhattacharjee, Pijushpani, Majumdar, Subhabrata   +3 more
openaire   +2 more sources

Impact of the invasive diatom species Cymbella janischii on riverine microbial biofilm communities and a potential role of bacterially produced zeatin

Journal of Phycology, EarlyView.
Abstract The diatom Cymbella janischii is an invasive species in Japan, causing nuisance blooms by forming thick mats in rivers. To date, there are no documented studies on the microbiome associations in C. janischii mats or the processes that drive bloom formation.
Eldrin D. L. R. Arguelles, Kana Mugikura, Shinya Sato   +2 more
wiley   +1 more source

Dark Matter at the Center and in the Halo of the Galaxy [PDF]

, 2004
All presently known stellar-dynamical constraints on the size and mass of the supermassive compact dark object at the Galactic center are consistent with a ball of self-gravitating, nearly non-interacting, degenerate fermions with mass between 76 and 491 keV, for degeneracy factor g=2. Sterile neutrinos of 76 keV mass, which are mixed with at least one
Bilic, Neven, Tupper, Gary B., Viollier, Raoul D.   +2 more
openaire   +2 more sources

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

DARK MATTER HALOS IN GALAXIES AND GLOBULAR CLUSTER POPULATIONS [PDF]

The Astrophysical Journal, 2014
We combine a new, comprehensive database for globular cluster populations in all types of galaxies with a new calibration of galaxy halo masses based entirely on weak lensing. Correlating these two sets of data, we find that the mass ratio $η\equiv M_{GCS}/M_{h}$ (total mass in globular clusters, divided by halo mass) is essentially constant at ...
Michael J. Hudson, Gretchen L. Harris, William E. Harris   +2 more
openaire   +2 more sources

EDGE: the shape of dark matter haloes in the faintest galaxies

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Collisionless dark matter only (DMO) structure formation simulations predict that dark matter (DM) haloes are prolate in their centres and triaxial towards their outskirts. The addition of gas condensation transforms the central DM shape to be rounder and more oblate.
Matthew D A Orkney, Ethan Taylor, Justin I Read, Martin P Rey, A Pontzen, Oscar Agertz, Stacy Y Kim, Maxime Delorme   +7 more
openaire   +6 more sources

ELUCID. V. Lighting Dark Matter Halos with Galaxies [PDF]

The Astrophysical Journal, 2018
Abstract In a recent study, using the distribution of galaxies in the north galactic pole of the SDSS DR7 region enclosed in a 500 box, we carried out our ELUCID simulation (ELUCID III). Here, we light the dark matter halos and subhalos in the reconstructed region in the simulation with ...
Xiaohu Yang, Youcai Zhang, Huiyuan Wang, Chengze Liu, Tianhuan Lu, Shijie Li, Feng Shi, Y. P. Jing, H. J. Mo, Frank C. van den Bosch, Xi Kang, Weiguang Cui, Hong Guo, Guoliang Li, S. H. Lim, Yi Lu, Wentao Luo, Chengliang Wei, Lei Yang   +18 more
openaire   +3 more sources

The Cherenkov Radiation in the Galaxy’s Halo of Dark Matter

International Journal of Astronomy and Astrophysics, 2013
The effect of light refraction in a galaxy halo of dark matter, described by profiles of Navarro-Frenk-White and Burkett, was considered. Powers of the Cherenkov radiation for the refractive indexes of gravitational fields with these profiles were calculated.
openaire   +3 more sources