A detailed study of X-ray cavities in the intracluster environment of the cool core cluster Abell 3017. (arXiv:2102.04650v2 [astro-ph.CO] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Pandge_M/0/1/0/all/0/1">M. B. Pandge</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sebastian_B/0/1/0/all/0/1">Biny Sebastian</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Seth_R/0/1/0/all/0/1">Ruchika Seth</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Raychaudhury_S/0/1/0/all/0/1">Somak Raychaudhury</a>
We present a detailed analysis of a cool-core galaxy cluster Abell~3017, at a
redshift of $z!=! 0.219$, which has been identified to be merging with its
companion cluster Abell~3016. This study has made use of X-ray ({it Chandra}),
UV (GALEX), optical (ESO/VLT), mid-infrared (WISE) and radio uGMRT observations
of this cluster. Using various image processing techniques, such as unsharp
masking, 2-d fits using Beta models, contour binning and the use of surface
brightness profiles, we show the existence of a pair of X-ray cavities, at a
projected distance of ~$sim$20arcsec (70,kpc) and ~$sim$16arcsec
(57,kpc), respectively from the core of Abell~3017. We also detect an excess
of X-ray emission located at 25arcsec $sim$(88,kpc) south of the centre of
mac, is likely due to the bulk motions in the ICM either by gas sloshing or
ram-pressure striping due to a merger. We find that the radio lobes are
responsible for the observed X-ray cavities detected in this system. The lower
values of mid-IR WISE colour [W1-W2] and [W2-W3] imply that the central BCG of
Abell~3017 is a star-forming galaxy. The current star formation rate of the
central BCG, estimated from the ${rm Halpha}$ and {it GALEX} FUV
luminosities, are equal to be $sim 5.06pm 0.78$ Msun yr$^{-1}$ and $sim
9.20pm 0.81$ Msun yr$^{-1}$, respectively. We detect, for the first time, a
radio phoenix $sim$150,kpc away from the radio core, with a spectral index of
($alpha !leq! -1.8$). We also report the detection of $rm~Pa_alpha$
emission in this cluster using ESO VLT {tt SINFONI} imaging data.
We present a detailed analysis of a cool-core galaxy cluster Abell~3017, at a
redshift of $z!=! 0.219$, which has been identified to be merging with its
companion cluster Abell~3016. This study has made use of X-ray ({it Chandra}),
UV (GALEX), optical (ESO/VLT), mid-infrared (WISE) and radio uGMRT observations
of this cluster. Using various image processing techniques, such as unsharp
masking, 2-d fits using Beta models, contour binning and the use of surface
brightness profiles, we show the existence of a pair of X-ray cavities, at a
projected distance of ~$sim$20arcsec (70,kpc) and ~$sim$16arcsec
(57,kpc), respectively from the core of Abell~3017. We also detect an excess
of X-ray emission located at 25arcsec $sim$(88,kpc) south of the centre of
mac, is likely due to the bulk motions in the ICM either by gas sloshing or
ram-pressure striping due to a merger. We find that the radio lobes are
responsible for the observed X-ray cavities detected in this system. The lower
values of mid-IR WISE colour [W1-W2] and [W2-W3] imply that the central BCG of
Abell~3017 is a star-forming galaxy. The current star formation rate of the
central BCG, estimated from the ${rm Halpha}$ and {it GALEX} FUV
luminosities, are equal to be $sim 5.06pm 0.78$ Msun yr$^{-1}$ and $sim
9.20pm 0.81$ Msun yr$^{-1}$, respectively. We detect, for the first time, a
radio phoenix $sim$150,kpc away from the radio core, with a spectral index of
($alpha !leq! -1.8$). We also report the detection of $rm~Pa_alpha$
emission in this cluster using ESO VLT {tt SINFONI} imaging data.
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