Structural and Hereditary Chaperonopathies: Mutation

Macario, Alberto J. L.; Macario, Everly Conway de; Cappello, Francesco

doi:10.1007/978-94-007-4667-1_4

Cited by 1 publication

(2 citation statements)

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“…Due to strong RFI in the LSB data set, only the upper portion of the band was used in the final imaging. Self‐calibration and imaging were carried out using the same approach as described in Macario et al (2010) for A697. We estimate that amplitude residual calibration errors are of the order of ∼8 per cent.…”

Section: A781 and Its Radio Emissionmentioning

confidence: 99%

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An elusive radio halo in the merging cluster Abell 781?

Venturi

Giacintucci

Dallacasa

et al. 2011

Monthly Notices of the Royal Astronomical Society: Letters

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Deep radio observations of the galaxy cluster Abell 781 have been carried out using the Giant Metrewave Radio Telescope at 325 MHz and have been compared to previous 610 MHz observations and to archival VLA 1.4 GHz data. The radio emission from the cluster is dominated by a diffuse source located at the outskirts of the X-ray emission, which we tentatively classify as a radio relic. We detected residual diffuse emission at the cluster centre at the level of S(325 MHz)~15-20 mJy. Our analysis disagrees with Govoni et al. (2011), and on the basis of simple spectral considerations we do not support their claim of a radio halo with flux density of 20-30 mJy at 1.4 GHz. Abell 781, a massive and merging cluster, is an intriguing case. Assuming that the residual emission is indicative of the presence of a radio halo barely detectable at our sensitivity level, it could be a very steep spectrum source.Comment: 5 pages, 4 figures, 1 table - Accepted for publication on Monthly Notices of the Royal Astronomical Society Letter

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Section: A781 and Its Radio Emissionmentioning

confidence: 99%

“…However, recent high‐sensitivity low‐frequency imaging led to the discovery of radio haloes with much steeper spectra (Venturi 2011), with the spectral index α∼ 1.8–2 [e.g. Abell 521, Brunetti et al 2008, Dallacasa et al 2009; Abell 697 (hereinafter A697) Macario et al 2010].…”

Section: Introductionmentioning

confidence: 99%