Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301
The CIZA J2242.8+5301 cluster hosts an extraordinary, narrow, Mpc-wide, diffuse patch of radio emission tracing travelling shock waves, called a relic. We perform a multi-wavelength of observations of the cluster. We discover radio spectral steepening and increasing spectral curvature in the shoc...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Subjects: | |
| Online Access: | https://astron-soc.in/bulletin/asics_vol013/ http://hdl.handle.net/20.500.11937/76025 |
| _version_ | 1848763607072899072 |
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| author | Stroe, Andra Weeren, Reinout J van Sobral, David Rumsey, Clare Intema, Huib Röttgering, Huub JA Harwood, Jeremy J Saunders, Richard Brüggen, Marcus Hoeft, Matthias |
| author_facet | Stroe, Andra Weeren, Reinout J van Sobral, David Rumsey, Clare Intema, Huib Röttgering, Huub JA Harwood, Jeremy J Saunders, Richard Brüggen, Marcus Hoeft, Matthias |
| author_sort | Stroe, Andra |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The CIZA J2242.8+5301 cluster hosts an extraordinary, narrow, Mpc-wide,
diffuse patch of radio emission tracing travelling shock waves, called a relic.
We perform a multi-wavelength of observations of the cluster. We discover radio
spectral steepening and increasing spectral curvature in the shock downstream
area, indicative of emission produced by spectrally-aged electrons, following a
JP ageing model. The curved integrated spectrum towards $16$ GHz challenges the
favoured relic formation model. Further, we find a boosting the number density
of H$\alpha$ emitters by a factor of $10$, possibly caused by interactions of
the galaxies with the shock wave. |
| first_indexed | 2025-11-14T11:06:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-76025 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:06:09Z |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-760252020-11-10T06:08:51Z Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 Stroe, Andra Weeren, Reinout J van Sobral, David Rumsey, Clare Intema, Huib Röttgering, Huub JA Harwood, Jeremy J Saunders, Richard Brüggen, Marcus Hoeft, Matthias astro-ph.GA astro-ph.GA astro-ph.CO The CIZA J2242.8+5301 cluster hosts an extraordinary, narrow, Mpc-wide, diffuse patch of radio emission tracing travelling shock waves, called a relic. We perform a multi-wavelength of observations of the cluster. We discover radio spectral steepening and increasing spectral curvature in the shock downstream area, indicative of emission produced by spectrally-aged electrons, following a JP ageing model. The curved integrated spectrum towards $16$ GHz challenges the favoured relic formation model. Further, we find a boosting the number density of H$\alpha$ emitters by a factor of $10$, possibly caused by interactions of the galaxies with the shock wave. Journal Article http://hdl.handle.net/20.500.11937/76025 https://astron-soc.in/bulletin/asics_vol013/ unknown |
| spellingShingle | astro-ph.GA astro-ph.GA astro-ph.CO Stroe, Andra Weeren, Reinout J van Sobral, David Rumsey, Clare Intema, Huib Röttgering, Huub JA Harwood, Jeremy J Saunders, Richard Brüggen, Marcus Hoeft, Matthias Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title | Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title_full | Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title_fullStr | Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title_full_unstemmed | Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title_short | Spectral and morphological signatures of cluster merger shocks: CIZA J2242.8+5301 |
| title_sort | spectral and morphological signatures of cluster merger shocks: ciza j2242.8+5301 |
| topic | astro-ph.GA astro-ph.GA astro-ph.CO |
| url | https://astron-soc.in/bulletin/asics_vol013/ http://hdl.handle.net/20.500.11937/76025 |