CLASH-VLT: CONSTRAINTS ON THE DARK MATTER EQUATION OF STATE FROM ACCURATE MEASUREMENTS OF GALAXY CLUSTER MASS PROFILES

Journal Article · Sat Mar 01 00:00:00 EST 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/783/1/L11· OSTI ID:22363955

Sartoris, Barbara; Borgani, Stefano; Girardi, Marisa ^[1]; Biviano, Andrea; Balestra, Italo; Nonino, Mario ^[2]; Rosati, Piero ^[3]; Umetsu, Keiichi; Czakon, Nicole ^[4]; Bartelmann, Matthias ^[5]; Grillo, Claudio ^[6]; Lemze, Doron; Medezinski, Elinor ^[7]; Zitrin, Adi ^[8]; Mercurio, Amata ^[9]; Postman, Marc; Bradley, Larry; Coe, Dan ^[10]; Broadhurst, Tom ^[11]; Melchior, Peter ^[12] ; others, and

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1. Dipartimento di Fisica, Sezione di Astronomia, Università di Trieste, Via Tiepolo 11, I-34143 Trieste (Italy)
2. INAF/Osservatorio Astronomico di Trieste, Via Tiepolo 11, I-34143 Trieste (Italy)
3. Dipartimento di Fisica e Scienze della Terra, Universita' di Ferrara, Via Saragat 1, I-44122 Ferrara (Italy)
4. Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan (China)
5. Zentrum für Astronomie der Universität Heidelberg, ITA, Albert-Ueberle-Str. 2, D-69120 Heidelberg (Germany)
6. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark)
7. Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States)
8. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States)
9. INAF/Osservatorio Astronomico di Capodimonte, Via Moiariello 16, I-80131 Napoli (Italy)
10. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
11. Department of Theoretical Physics, University of the Basque Country, P.O. Box 644, E-48080 Bilbao (Spain)
12. Department of Physics, The Ohio State University, Columbus, OH 43210 (United States)

A pressureless scenario for the dark matter (DM) fluid is a widely adopted hypothesis, despite the absence of direct observational evidence. According to general relativity, the total mass-energy content of a system shapes the gravitational potential well, but different test particles perceive this potential in different ways depending on their properties. Cluster galaxy velocities, being <

• OSTI ID: 22363955
• Journal Information: Astrophysical Journal Letters, Vol. 783, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BARYONS
COSMOLOGY
EQUATIONS OF STATE
GALAXY CLUSTERS
GENERAL RELATIVITY THEORY
GRAY ENERGY
LENSES
LIMITING VALUES
MASS
NONLUMINOUS MATTER
PHOTONS
POTENTIALS
RELATIVISTIC RANGE
TELESCOPES