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pro vyhledávání: '"Glasscock, Katrine A"'
Autor:
Bull, Philip, El-Makadema, Ahmed, Garsden, Hugh, Edgley, John, Roddis, Neil, Chluba, Jens, Conselice, Christopher J., Dutta, Sohini, Glasscock, Katrine A., Nasirudin, Ainulnabilah, Norris, Jordan, Wilensky, Michael J., Ye, Isabelle, Zhang, Zheng
The sky-averaged brightness temperature of the 21cm line from neutral hydrogen provides a sensitive probe of the thermal state of the intergalactic medium, particularly before and during Cosmic Dawn and the Epoch of Reionisation. This `global signal'
Externí odkaz:
http://arxiv.org/abs/2410.00076
Autor:
Wilensky, Michael J., Burba, Jacob, Bull, Philip, Garsden, Hugh, Glasscock, Katrine A., Fagnoni, Nicolas, Acedo, Eloy de Lera, DeBoer, David R., Razavi-Ghods, Nima
Accurate modelling of the primary beam is an important but difficult task in radio astronomy. For high dynamic range problems such as 21cm intensity mapping, small modelling errors in the sidelobes and spectral structure of the beams can translate in
Externí odkaz:
http://arxiv.org/abs/2403.13769
The existence of a radio synchrotron background (RSB) excess is implied by a number of measurements, including excess emission seen by the ARCADE~2 and LWA experiments. Highly sensitive wideband radio arrays, of the kind used to measure the cosmic 21
Externí odkaz:
http://arxiv.org/abs/2403.13768
Autor:
Burba, Jacob, Bull, Philip, Wilensky, Michael J., Kennedy, Fraser, Garsden, Hugh, Glasscock, Katrine A.
Power spectrum estimators are an important tool in efforts to detect the 21 cm brightness temperature fluctuations from neutral hydrogen at early times. An initial detection will likely be statistical in nature, meaning that it will not be possible t
Externí odkaz:
http://arxiv.org/abs/2403.13767
Publikováno v:
RAS Techniques and Instruments, Volume 3, Issue 1, January 2024, Pages 607-624
An important application of next-generation wide-field radio interferometers is making high dynamic range maps of radio emission. Traditional deconvolution methods like CLEAN can give poor recovery of diffuse structure, prompting the development of w
Externí odkaz:
http://arxiv.org/abs/2403.13766
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