Results 41 to 50 of about 917,675 (340)

Radial dependence of the dark matter distribution in M33 [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
The stellar and gaseous mass distributions, as well as the extended rotation curve in the nearby galaxy M33 are used to derive the radial distribution of dark matter density in the halo and to test cosmological models of galaxy formation and evolution. Two methods are examined to constrain dark mass density profiles.
Lopez Fune E., Salucci P., Corbelli E.
openaire   +3 more sources

The interaction of dark matter cusp with the baryon component in disk galaxies

, 2012
In this paper we examine the effect of the formation and evolution of the disk galaxy on the distribution of dark halo matter. We have made simulations of isolated dark matter (DM) halo and two component (DM + baryons).
A. A. Dutton, A. Helmi, A. Khoperskov, A. P. Cooper, A. Rosen, A. V. Khoperskov, A. V. Khoperskov, A. V. Khoperskov, A. V. Maccio, A. V. Zasov, A.G.Doroshkevich,V. N. Lukash, B. Allgood, B. C. Whitmore, B. Leer van, B. M. Shustov, B. M. Shustov, B.M. Shustov, D. Z. Wiebe, E. Griv, E. Mikheeva, F. Governato, H. Mo, I.V. Igumenshchev, J. A. Sellwood, J. Barnes, J. Dubinski, J. F. Navarro, J. F. Navarro, K. Wada, M. A. Eremin, M. D. Weinberg, M. G. Abadi, M. Gustafsson, M. Kuhlen, M. Mori, M. Spano, M. Steinmetz, M. V. Medvedev, N. Katz, P. Das, R. Roskar, S. A. Khoperskov, V. Belokurov, W. J. G. Blok de, W. R. Brown   +44 more
core   +1 more source

The First Robust Evidence Showing a Dark Matter Density Spike Around the Supermassive Black Hole in OJ 287

The Astrophysical Journal Letters
Black hole dynamics suggests that dark matter would redistribute near a supermassive black hole (SMBH) to form a density spike. However, no direct evidence of a dark matter density spike around an SMBH has been identified.
Man Ho Chan, Chak Man Lee
doaj   +1 more source

Hierarchical Structure in Dark Matter Distributions [PDF]

Symposium - International Astronomical Union, 1998
Galaxy observers argue for the dark halo surrounding each galaxy, while cluster investigators discuss the dominance of dark matter (DM) in the intra-cluster space. Then, what is the relation between the cluster DM and the DM associated with member galaxies of the cluster?
openaire   +1 more source

Distribution of annihilation luminosities in dark matter substructure [PDF]

Physical Review D, 2010
We calculate the probability distribution function (PDF) of the expected annihilation luminosities of dark matter subhalos as a function of subhalo mass and distance from the Galactic center using a semi-analytical model of halo evolution. We find that the PDF of luminosities is relatively broad, exhibiting a spread of as much as an order of magnitude ...
Koushiappas, Savvas M., Zentner, Andrew R., Kravtsov, Andrey V.   +2 more
openaire   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Modelling the flux distribution function of the extragalactic gamma-ray background from dark matter annihilation

, 2015
The one-point function (i.e., the isotropic flux distribution) is a complementary method to (anisotropic) two-point correlations in searches for a gamma-ray dark matter annihilation signature.
Ando, Shin'ichiro, Feyereisen, Michael R., Lee, Samuel K.   +2 more
core   +1 more source

Large Scale Pressure Fluctuations and Sunyaev-Zel'dovich Effect [PDF]

, 2000
The Sunyaev-Zel'dovich (SZ) effect associated with pressure fluctuations of the large scale structure gas distribution will be probed with current and upcoming wide-field small angular scale cosmic microwave background experiments.
A. Cooray, A. Cooray, A. Refregier, A. Renzini, Asantha Cooray, C.R. Contaldi, D. Limber, D.J. Eisenstein, E. Komatsu, E.F. Bunn, H.J. Mo, J. Navarro, J.A. Peacock, J.E. Carlstrom, J.J. Mohr, J.N. Fry, L.P. David, M. Fukugita, M. Jones, M. Kamionkowski, M. Pierre, M. Tegmark, N. Aghanim, N. Kaiser, N. Kaiser, N. Makino, N.Y. Gnedin, P.G. Ferreira, P.T.P. Viana, R. Cen, R. Juszkiewicz, R.A. Sunyaev, R.J. Scherrer, S. Cole, T.M. Tripp, U.-L. Pen, W. Hu, W.H. Press, W.L. Holzapfel, Y. Suto   +39 more
core   +2 more sources

Indirect Detection of Decaying Dark Matter with High Angular Resolution: The Case for Axion Search by IRCS on the Subaru Telescope

The Astrophysical Journal
Recent advances in photon detectors have provided exceptional sensitivities to dark matter with high angular resolution. Motivated by this, we present a detailed study of photon flux from dark matter decay in dwarf spheroidal galaxies (dSphs) by focusing
Wen Yin, Kohei Hayashi
doaj   +1 more source

Dark matter, black holes, and gravitational waves

Nuclear Physics B
The formation and growth of black holes can strongly influence the distribution of dark matter around them. I discuss here the different types of dark matter overdensities around black holes, including dark matter cusps, spikes, mounds, crests, and ...
Gianfranco Bertone
doaj   +1 more source