Results 141 to 150 of about 394,077 (286)

Dark matter constraints from a joint analysis of dwarf Spheroidal galaxy observations with VERITAS [PDF]

, 2017
We present constraints on the annihilation cross section of weakly interacting massive particles dark matter based on the joint statistical analysis of four dwarf galaxies with VERITAS.
V. C. S. Archambault, A. Archer, W. Benbow, R. Bird, E. Bourbeau, T. Brantseg, M. Buchovecky, J. Buckley, V. Bugaev, K. Byrum, M. Cerruti, J. Christiansen, M. Connolly, W. Cui, M. Daniel, Q. Feng, J. Finley, H. Fleischhack, L. Fortson, A. Furniss, A. Geringer-Sameth, S. Griffin, J. Grube, M. Hutten, N. Haakansson, D. Hanna, O. Hervet, J. Holder, G. Hughes, C. Johnson, P. Kaaret, P. Kar, N. Kelley-Hoskins, M. Kertzman, D. Kieda, S. Koushiappas, M. Krause, S. Kumar, M. Lang, T. T. Lin, S. McArthur, P. Moriarty, D. Nieto, S. O’Brien, R. Ong, A. Otte, N. Park, M. Pohl, A. Popkow, E. Pueschel, J. Quinn, K. Ragan, P. Reynolds, G. Richards, E. Roache, C. Rulten, I. Sadeh, M. Santander, G. Sembroski, K. Shahinyan, A. Smith, D. Staszak, I. Telezhinsky, S. Tr'epanier, J. Tucci, J. Tyler, S. Wakely, A. Weinstein, P. Wilcox, D. Williams, B. Department, M. University, Montreal., D. Physics, W. University, S. Louis, Mó, Fred Lawrence Whipple Observatory, H. C. F. Astrophysics, Amado, Az, Astronomy, U. California, L. Angeles, Ca, I. S. University, Ames, Ia, A. N. Laboratory, Argonne, Il, P. Department, California Polytechnic State University, S. Obispo, S. O. Physics, National University of Ireland Galway, University Road, Galway., Ireland, P. University, W. Lafayette, In, Center for Computational Astrophysics, Tsinghua University, Beijing, Desy, Zeuthen, H Germany, U. Minnesota, Minneapolis, Mn, California Bay, Hayward, Brown University, Providence, Ri, Stevens Institute of Technology, Hoboken, Nj, I. O. Physics, U. Potsdam, Santa Cruz Institute for Particle Physics, Santa Cruz, the Bartol Research Institute, U. Delaware, Newark, De, U. Iowa, Van Allen Hall, Iowa City, U. Utah, Salt lake City, Ut, D. University, Greencastle, Columbia University, New York., Ny, University College Dublin, Center for Computational Astrophysics, G. I. O. Technology, Atlanta, Ga, Enrico Fermi Institute, U. Chicago, Chicago., D. Sciences, C. I. O. Technology, Cork, Barnard College, U. Maryland, College Park Nasa Gsfc, College Park, Md   +153 more
semanticscholar   +1 more source

The Disruption of the Sagittarius Dwarf Galaxy [PDF]

The Astrophysical Journal, 1995
Numerical simulations of dwarf spheroidal galaxies undergoing several close encounters with the Milky Way are described. By comparing our models to observed properties of the recently discovered dwarf galaxy in Sagittarius (Sgr), we discuss implications of our results for the formation and evolution of the Milky Way system.
Lars Hernquist, David N. Spergel, Kathryn V. Johnston   +2 more
openaire   +3 more sources

Verification of the Fusarium‐Increasing Properties of the Dominant Dwarfing Gene Ddw1 in triticale (×Triticosecale)

Plant Breeding, Volume 144, Issue 2, Page 151-158, April 2025.
ABSTRACT Dwarfing genes that are considerably reducing plant height are used in many cereals. In triticale, the rye‐derived dominant dwarfing gene Ddw1 was introgressed in commercial varieties. It has already been shown that this gene increases Fusarium head blight (FHB) susceptibility in one segregating population.
Thomas Miedaner, Paul Gruner, Hans Peter Maurer   +2 more
wiley   +1 more source

Exploring the Evolution of a Dwarf Spheroidal Galaxy with SPH Simulations. II. AGN Feedback

The Astrophysical Journal
We investigate active galactic nucleus (AGN) feedback from an intermediate-mass black hole at the center of a dwarf spheroidal galaxy, by performing isolated galaxy simulations using a modified version of the GADGET-3 code. We consider Leo II (PGC 34176)
Roberto Hazenfratz, Paramita Barai, Gustavo A. Lanfranchi, Anderson Caproni   +3 more
doaj   +1 more source

Draco, a flawless dwarf galaxy

, 2006
The Draco dwarf spheroidal galaxy (dSph), with its apparent immense mass to light ratio and compact size, holds many clues to the nature of the enigmatic dark matter.
Apparicio, Battaglia, Bellazzini, Colìn, De Blok, Gentile, Ghigna, Graham, Hargreaves, Hayashi, Ibata, Irwin, Irwin, Irwin, Irwin, King, Klessen, Kleyna, Kleyna, Klypin, Kroupa, Kuhn, Lokas, Lokas, Lynden-Bell, M. J. Irwin, M. Ségall, Macciò, Mashchenko, Mateo, Mayer, Moore, Moore, N. F. Martin, Navarro, Naylor, Odenkirchen, Olszewski, Palma, Piatek, R. A. Ibata, Read, Ricotti, Rosckosi, S. Chapman, Salucci, Sawa, Sersic, Stetson, Stetson, Tolstoy, White, Wilkinson, Wilkinson   +53 more
core   +1 more source

The G-dwarf problem in the Galaxy [PDF]

New Astronomy, 2008
The empirical differential metallicity distribution (EDMD) is deduced for (i) local thick disk stars; (ii) likely metal-weak thick disk stars; (iii) chemically selected local G dwarfs, with the corrections performed in order to take into account the stellar scale height; in addition to previous results related to (iv) solar neighbourhood halo subdwarfs;
openaire   +2 more sources

Single‐Cell Hi‐C Technologies and Computational Data Analysis

Advanced Science, Volume 12, Issue 9, March 6, 2025.
This review provides a detailed examination of scHi‐C technologies, offering quantitative evaluations of 13 protocols. It addresses computational challenges arising from data sparsity and presents systematic insights into data analysis methods, including clustering, TAD calling and 3D reconstruction.
Madison A Dautle, Yong Chen
wiley   +1 more source

GHOSTS I: A New Faint very Isolated Dwarf Galaxy at D = 12 +/- 2 Mpc

, 2013
We report the discovery of a new faint dwarf galaxy, GHOSTS I, using HST/ACS data from one of our GHOSTS (Galaxy Halos, Outer disks, Substructure, Thick disk, and Star clusters) fields.
Bailin, Jeremy, Bell, Eric F., Dalcanton, Julianne J., de Jong, Roelof S., Ford, H. Alyson, Holwerda, Benne W., Monachesi, Antonela, Radburn-Smith, David J., Streich, David, Vlajic, Marija, Zucker, Daniel B.   +10 more
core   +1 more source

Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley   +1 more source

The molecular gas reservoir of 6 low-metallicity galaxies from the Herschel Dwarf Galaxy Survey - A ground-based follow-up survey of CO(1–0), CO(2–1), and CO(3–2) [PDF]

, 2014
Context. Observations of nearby starburst and spiral galaxies have revealed that molecular gas is the driver of star formation. However, some nearby low-metallicity dwarf galaxies are actively forming stars, but CO, the most common tracer of this ...
D. Cormier, S. Madden, V. Lebouteiller, S. Hony, S. Aalto, F. Costagliola, F. Costagliola, A. Hughes, A. R'emy-Ruyer, N. Abel, E. Bayet, F. Bigiel, J. Cannon, R. Cumming, M. Galametz, F. Galliano, S. Viti, R. Wu   +17 more
semanticscholar   +1 more source