Cluster Collisions Switch on Radio Halos

Chandra_461_1024

chandra_461 August 30th, 2010

Credit: X-ray (NASA/CXC/SAO/M.Markevitch

This is a composite image of the northern part of the galaxy cluster Abell 1758 showing the effects of a collision between two smaller galaxy clusters. Chandra X-ray data (blue) reveal hot gas in the cluster and data from the Giant Metrewave Radio Telescope (GMRT) in India (pink) shows huge "halos" generated by ultra-relativistic particles and magnetic fields over vast scales. Optical data from the Digitized Sky Survey are colored gold. A study of this galaxy cluster and 31 others with Chandra and the GMRT shows that huge radio halos are generated during collisions between galaxy clusters.

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2010/a1758/

Curator: Chandra X-ray Observatory, Cambridge, MA, USA

Image Use Policy: http://chandra.harvard.edu/photo/image_use.html

Image Details

Image Type
Observation
Object Name
Abell 1758

Distance

Universescale3
3,200,000,000 light years
Chandra_461_128
 

Position Details

Position (ICRS)
RA = 13h 32m 46.5s
DEC = 50° 33’ 23.6”
Orientation
North is up
Field of View
13.4 x 13.4 arcminutes
Constellation
Canes Venatici

Color Mapping

  Telescope Spectral Band Wavelength
Yellow DSS (DSS2IR) Optical (IR-band) 798.0 nm
Yellow DSS (DSS2R) Optical (R-band) 660.0 nm
Yellow DSS (DSS2B) Optical (B-band) 450.0 nm
Magenta GMRT Radio -
Blue Chandra (ACIS) X-ray (X-ray) 826.7 pm
Spectrum_xray1w
Yellow
Yellow
Yellow
Blue
Chandra_461_1280
×
ID
461
Subject Category
Subject Name
Abell 1758
Credits
X-ray (NASA/CXC/SAO/M.Markevitch
Release Date
2010-08-30
Lightyears
3,200,000,000
Redshift
0.28
Reference Url
http://chandra.harvard.edu/photo/2010/a1758/
Type
Observation
Image Quality
Good
Distance Notes
Facility
DSS, DSS, DSS, GMRT, Chandra
Instrument
DSS2IR, DSS2R, DSS2B, -, ACIS
Color Assignment
Yellow, Yellow, Yellow, Magenta, Blue
Band
Optical, Optical, Optical, Radio, X-ray
Bandpass
IR-band, R-band, B-band, -, X-ray
Central Wavelength
798, 660, 450, -, 0.8267
Start Time
1993-03-02, 1993-03-02, 1993-03-02, 2007-03-29, 2001-08-28T20:26:06
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
203.1939558, 50.5565619
Reference Dimension
3600.0, 3600.0
Reference Pixel
1801.0, 1801.0
Scale
6.18308e-05, 6.1830758e-05
Rotation
0.02
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
WCS retrieved using CXCs PinpointWCS
Creator (Curator)
Chandra X-ray Observatory
URL
http://chandra.harvard.edu
Name
Chandra X-ray Observatory Center
Email
cxcpub@cfa.harvard.edu
Telephone
617.496.7941
Address
60 Garden St.
City
Cambridge
State/Province
MA
Postal Code
02138
Country
USA
Rights
http://chandra.harvard.edu/photo/image_use.html
Publisher
Chandra X-ray Center
Publisher ID
chandra
Resource ID
a1758.tif
Metadata Date
2011-12-02
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
3,200,000,000 light years

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