Merging Cluster Collaboration
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Abell 520

RA Dec z
04:54:19.0 +02:56:49 0.201

Summary

Summary (work in progress)

Abell 520 was identified as a radio halo candidate by Giovannini et al. (1999). Govoni et al. (2001) later confirmed this and noted that the radio halo is elongated in the NE-SW direction (which corresponds to the primary merger axis). They also identified two head-tail radio galaxies in the west with their tails pointed away from the cluster center.

Radio references:
Vacca et al. (2013) have a nice literature review.
Govoni et al (2001)... radio halo elongated along merger direction, two head tail radio cluster members, ROSAT X-ray analysis
Giovannini et al (1999)

X-ray:
Govoni et al. (2001)

Optical:
Proust et al. (2000) redshift survey

Lensing references:
Mahdavi et al 2007
Jee et al 2014


Picture
Insert cartoon image

Existing Data

Optical Imaging
  • Subaru: VRi*
  • CFHT: gr*
  • HST ACS: F435W, F606W*, F814W*
  • HST WPC2: F814W*

Spectra
  • NED^: 248
  • Proust et al. (2000): 21
  • Girardi et al. (2008): 167
  • Jee et al. (2012): 236
  • CNOC:
  • DEIMOS:
X-ray
  • Chandra: 546 ks
  • XMM: 42 ks
Radio
  • VLA: 325 MHz, 1.4 GHz

Gallery


References

  1. Giovannini, G., Tordi, M. & Feretti, L., 1999. Radio halo and relic candidates from the NRAO VLA Sky Survey. New Astronomy, 4(2), pp.141–155.
  2. Proust, D. et al., 2000. Dynamics of the X-ray clusters Abell 222, Abell 223 and Abell 520. Astronomy and Astrophysics, 355, pp.443–453.
  3. Govoni, F. et al., 2001. Radio and X-ray diffuse emission in six clusters of galaxies. Astronomy and Astrophysics, 376(03), pp.803–819.
  4. Govoni, F. et al., 2004. ChandraTemperature Maps for Galaxy Clusters with Radio Halos. The Astrophysical Journal, 605(2), pp.695–708.
  5. Markevitch, M. et al., 2005. Bow Shock and Radio Halo in the Merging Cluster A520. The Astrophysical Journal, 627(2), pp.733–738.
  6. Mahdavi, A. et al., 2007. A Dark Core in Abell 520. The Astrophysical Journal, 668(2), pp.806–814.
  7. Okabe, N. & Umetsu, K., 2008. Subaru Weak Lensing Study of Seven Merging Clusters: Distributions of Mass and Baryons. Publications of the Astronomical Society of Japan, 60, pp.345–.
  8. Girardi, M. et al., 2008. Cluster Abell 520: a perspective based on member galaxies. Astronomy and Astrophysics, 491(2), pp.379–395.
  9. Jee, M.J. et al., 2012. A STUDY OF THE DARK CORE IN A520 WITH THE HUBBLE SPACE TELESCOPE: THE MYSTERY DEEPENS. The Astrophysical Journal, 747(2), p.96.
  10. Clowe, D. et al., 2012. ON DARK PEAKS AND MISSING MASS: A WEAK-LENSING MASS RECONSTRUCTION OF THE MERGING CLUSTER SYSTEM A520. The Astrophysical Journal, 758(2), p.128.
  11. Jee, M.J. et al., 2013. Hubble Space Telescope/Advanced Camera for Surveys Confirmation of the Dark Substructure in A520. eprint arXiv:1401.3356.
  12. Vacca, V. et al., 2013. Spectral index image of the radio halo in the cluster Abell 520, which hosts the famous bow shock. Astronomy and Astrophysics, 561, p.A52.
* Lensing quality imaging
^ Galaxies with spectroscopic redshifts near the cluster within a radius of 2 Mpc of the system center.
 © 2014 Merging Cluster Collaboration