2018ApJ...853...51Z

Query : 2018ApJ...853...51Z

2018ApJ...853...51Z - Astrophys. J., 853, 51-51 (2018/January-3)

Ultralight axion dark matter and its impact on dark halo structure in N-body simulations.

ZHANG J., SMING TSAI Y.-L., KUO J.-L., CHEUNG K. and CHU M.-C.

Abstract (from CDS):

Ultralight axion is a dark matter candidate with mass O (10–22)eV and de Broglie wavelength of order kiloparsec. Such an axion, also called fuzzy dark matter (FDM), thermalizes via gravitational force and forms a Bose-Einstein condensate. Recent studies suggested that the quantum pressure from FDM can significantly affect structure formation in small scales, thus alleviating the so-called "small-scale crisis." In this paper, we develop a new technique to discretize the quantum pressure and illustrate the interactions among FDM particles in an N-body simulation that accurately simulates the formation of the dark matter halo and its inner structure in the region outside the softening length. In a self-gravitationally bound virialized halo, we find a constant density solitonic core, which is consistent with theoretical prediction. The existence of the solitonic core reveals the nonlinear effect of quantum pressure and impacts structure formation in the FDM model.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): astroparticle physics - dark matter - Galaxy: halo - methods: numerical - methods: numerical

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1

Query : 2018ApJ...853...51Z

Basic data :
ClG 0657-56 -- Cluster of Galaxies
Other object types: otypes_help 		ClG (2004A&A,ClG,...), X (2020ApJ,1E,...), C?G (2014A&A,XCLASS), gLe (2001ApJ)
ICRS coord. (ep=J2000) : 		06 58 26.9 -55 58 21 (X-ray) [ 5000 5000 90 ] E 2022A&A...661A..38P
FK4 coord. (ep=B1950 eq=1950) : 		06 57 28.8 -55 54 10 [ 5000 5000 90 ]
Gal coord. (ep=J2000) : 		266.0482 -21.2645 [ 5000 5000 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 75948 [1499] / z(spectroscopic) 0.2956 [0.0050] / cz 88619 [1499]
   (Opt) D 2022A&A...658A..59X
Angular size (arcmin): 		8.0 8.0 ~ (Rad) D 2015ApJ...813...77Y
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
: 2487 		: 7 Display criteria :

Identifiers (32) :
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ClG 0657-56 1ES 0657-55.8 PSZ2 G266.04-21.25 SPT-CL J0658-5556
ACT-CL J0658.5-5557 2MAXI J0656-560 PSZRX G266.04-21.24 SRGA J065826.9-555821
ACT-CL J0658-5556 MCXC J0658.5-5556 RXC J0658.4-5557 SWIFT J0658.5-5556
ACT-CL J0658-5557 NAME 1E 0657-56 RXC J0658.5-5556 XCLASS 23095
BAX 104.6217-55.9528 NAME Bullet Cluster RXGCC 256 XMMXCS J065828.8-555640.8
1E 0657-55.8 PBC J0658.4-5553 RX J0658.5-5557 XMMXCS J065829.1-555641.5
2E 1759 PLCKESZ G266.03-21.25 RX J0658.4-5557 [DBG99] 69
2E 0657.4-5552 PSZ1 G266.02-21.23 1RXS J065830.3-555702 [RRB2014] RM J065835.2-555656.6

References (1077 between 1850 and 2026) (Total 1077)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 4   

   

Observing logs
Herschel : 7    ISO : 2    XMM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ClG 0657-56

Link by name to the catalogue in VizieR :

2E 1759 RXC J0658.4-5557 RXC J0658.5-5556 1RXS J065830.3-555702

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