Magnetogenesis and the Cosmic Web: A Joint Challenge for Radio Observations and Numerical Simulations
| Autor: | Denis Wittor, C. Stuardi, Franco Vazza, Matteo Angelinelli, Stefan Hackstein, Paola Domínguez-Fernández, Giannandrea Inchingolo, Claudio Gheller, Daniele Dallacasa, Nicola Locatelli, Annalisa Bonafede, Stefano Ettori, K. Rajpurohit, Fabio Finelli, Marisa Brienza, Gianfranco Brunetti, Serena Banfi, Marcus Brüggen, Daniela Paoletti |
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| Přispěvatelé: | Vazza F., Locatelli N., Rajpurohit K., Banfi S., Dominguez-Fernandez P., Wittor D., Angelinelli M., Inchingolo G., Brienza M., Hackstein S., Dallacasa D., Gheller C., Bruggen M., Brunetti G., Bonafede A., Ettori S., Stuardi C., Paoletti D., Finelli F. |
| Rok vydání: | 2021 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
General technique Large-scale structure of Universe Computer science Astronomy Polarimetry FOS: Physical sciences QB1-991 Context (language use) 01 natural sciences general techniques Cosmic web 0103 physical sciences galaxy clusters 010303 astronomy & astrophysics Galaxy cluster Intergalactic medium High Energy Astrophysical Phenomena (astro-ph.HE) COSMIC cancer database 010308 nuclear & particles physics Polarimetric Astronomy and Astrophysics LOFAR Sight polarimetric intergalactic medium large-scale structure of Universe Radio frequency Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Galaxies, Vol 9, Iss 109, p 109 (2021) Galaxies; Volume 9; Issue 4; Pages: 109 |
| ISSN: | 2075-4434 |
| DOI: | 10.3390/galaxies9040109 |
| Popis: | The detection of the radio signal from filaments in the cosmic web is crucial to distinguish possible magnetogenesis scenarios. We review the status of the different attempts to detect the cosmic web at radio wavelengths. This is put into the context of the advanced simulations of cosmic magnetism carried out in the last few years by our {\magcow} project. While first attempts of imaging the cosmic web with the MWA and LOFAR have been encouraging and could discard some magnetogenesis models, the complexity behind such observations makes a definitive answer still uncertain. A combination of total intensity and polarimetric data at low radio frequencies that the SKA and LOFAR2.0 will achieve is key to removing the existing uncertainties related to the contribution of many possible sources of signal along deep lines of sight. This will make it possible to isolate the contribution from filaments, and expose its deep physical connection with the origin of extragalactic magnetism. Comment: 27 pages, 5 figures. Galaxies, in press |
| Databáze: | OpenAIRE |
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