*Cluster A520*

Properties
RA = 04h54m19sec (73.57deg)
DEC = 02deg56min49sec (2.95deg)
Z = 0.209 +/- 0.01
T_xray = ~9.3(+0.4 -0.5) (note: Different peak temperatures)

References

Mahdavi et al. http://adsabs.harvard.edu/abs/2007ApJ...668..806M
July 2007
- Multi-wavelength observations of A520.
- Detects a massive dark core that coincides with X-ray peak
- Detects a low mass/light region that coincides with a shock feature (radio halo)

Okabe et al. http://lanl.arxiv.org/abs/astro-ph/0702649v4
Astro-ph preprint. Initially submitted Feb 2007 - latest version submitted April 2008
- Weak lensing study of 7 merging clusters (including A520)
- A520 classified as ongoing merger
- Notes X-ray observations of 2 gas clumps. Interprets as possible 3-componet merger
- Bow shock mass and X-ray signal coincide

Markevitch et al. http://adsabs.harvard.edu/abs/2005ApJ...627..733M
April 2005
- Compare Chandra observations and with observed Radio halo
- Focus on supersonic bow shock
- Discuss models for the radio emission (electron acceleration)

2009-02-17 - First map
2009-03-26 - Calibrations
2009-06-03 - Update
2009-06-10 - Calibrated maps
2009-06-10a - Skydip calibrations
2009-06-23 - Testing new filter

A520_v1.pdf: Current status of A520 analysis and to do items.

2009-07-08 - Skydip calibrations followup
2009-08-12 - A520 status as of 2009-08-12

-- JamesKennedy - 14 Jan 2009

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This topic: APEX_SZ > WebHome > A520 Topic revision: r12 - 2009-08-12 - JamesKennedy

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