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AVAO
- Commander
- Posts: 548
- Joined: Tue May 28, 2019 12:24 pm
- AKA: multiwavelength traveller
- Location: Zurich, Switzerland
Post
by AVAO » Mon Mar 04, 2024 9:26 pm
A 'MeerKAT-meets-LOFAR' study of the complex multi-component (mini-)halo in the extreme sloshing cluster Abell 2142
ARXIV C. Riseley et al.
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2024 May 01
Colour-composite image of Abell 2142, overlaying radio colour on optical RGB - Credit: C. Riseley et al.
https://cdn.masto.host/astrodonsocial/c ... b44ff4.png
A 'MeerKAT-meets-LOFAR' study of the complex multi-component (mini-)halo in the extreme sloshing cluster Abell 2142
Clusters of galaxies are turbulent environments, whether merging systems with a turbulent intracluster medium (ICM) or relaxed systems sloshing within the potential well. In many such clusters, diffuse radio sources associated with the ICM are found: radio haloes and mini-haloes. Abell 2142 is a rich cluster undergoing extreme core sloshing, generating four cold fronts and a complex multi-component radio halo. Recent work revealed three halo components which span 2.4 Mpc. Particle acceleration on such scales is poorly understood, and requires high-quality multi-frequency data to understand. We use new deep MeerKAT L-band (1283 MHz) observations, combined with LOFAR HBA (143 MHz) data and X-ray data from XMM-Newton and Chandra to study the spectrum of the halo and the connection between the thermal and non-thermal components of the ICM.
We detect the third halo component for the first time at 1283 MHz and confirm its ultra-steep spectrum nature, recovering αH3 [...]
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more
TY4YA Jac
Exciting, how the attractor center is surrounded by the radio galaxies...
Radio in red (LOFAR), X-ray in violet (CHANDRA)
Last edited by
bystander on Tue Mar 05, 2024 6:00 pm, edited 1 time in total.
Reason: Please no hot links to images > 500 kb.
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TommyArney
- Asternaut
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- Joined: Mon May 13, 2024 7:44 am
Post
by TommyArney » Mon May 13, 2024 7:54 am
AVAO wrote: ↑Mon Mar 04, 2024 9:26 pm
A 'MeerKAT-meets-LOFAR' study of the complex multi-component (mini-)halo in the extreme sloshing cluster Abell 2142
ARXIV C. Riseley et al.
|
2024 May 01
Colour-composite image of Abell 2142, overlaying radio colour on optical RGB - Credit: C. Riseley et al.
https://cdn.masto.host/astrodonsocial/c ... b44ff4.pnggeometry dash meltdown
A 'MeerKAT-meets-LOFAR' study of the complex multi-component (mini-)halo in the extreme sloshing cluster Abell 2142
Clusters of galaxies are turbulent environments, whether merging systems with a turbulent intracluster medium (ICM) or relaxed systems sloshing within the potential well. In many such clusters, diffuse radio sources associated with the ICM are found: radio haloes and mini-haloes. Abell 2142 is a rich cluster undergoing extreme core sloshing, generating four cold fronts and a complex multi-component radio halo. Recent work revealed three halo components which span 2.4 Mpc. Particle acceleration on such scales is poorly understood, and requires high-quality multi-frequency data to understand. We use new deep MeerKAT L-band (1283 MHz) observations, combined with LOFAR HBA (143 MHz) data and X-ray data from XMM-Newton and Chandra to study the spectrum of the halo and the connection between the thermal and non-thermal components of the ICM.
We detect the third halo component for the first time at 1283 MHz and confirm its ultra-steep spectrum nature, recovering αH3 [...]
...
more
TY4YA Jac
Exciting, how the attractor center is surrounded by the radio galaxies...
Radio in red (LOFAR), X-ray in violet (CHANDRA)
Wow, this is a fantastic image of Abell 2142! Are there any plans to extend the observations to even lower frequencies to see how the spectrum behaves further down?