2012MNRAS.424L..49P

Query : 2012MNRAS.424L..49P

2012MNRAS.424L..49P - Mon. Not. R. Astron. Soc., 424, L49-L53 (2012/July-3)

The first measurement of temperature standard deviation along the line of sight in galaxy clusters.

PROKHOROV D.A. and COLAFRANCESCO S.

Abstract (from CDS):

Clusters of galaxies are mainly formed by merging of smaller structures, according to the standard cosmological scenario. If the mass of a substructure is ≳ 10 per cent of that of a galaxy cluster, the temperature distribution of the intracluster medium (ICM) in a merging cluster becomes inhomogeneous. Various methods have been used to derive the two-dimensional projected temperature distribution of the ICM. However, methods for studying temperature distribution along the line of sight through the cluster were absent. In this Letter, we present the first measurement of the temperature standard deviation along the line of sight, using as a reference case the multifrequency Sunyaev–Zel'dovich measurements of the Bullet Cluster. We find that the value of the temperature standard deviation is high and equals to (10.6±3.8) keV in the Bullet Cluster. This result shows that the temperature distribution in the Bullet Cluster is strongly inhomogeneous along the line of sight and provides a new method for studying galaxy clusters in depth.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): galaxies: clusters: general - cosmic background radiation

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 : 2012MNRAS.424L..49P

Basic data :

ClG 0657-56 -- Cluster of Galaxies
Other object types:	`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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`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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

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

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

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