Sunyaev-Zeldovich signatures from non-thermal, relativistic electrons using CMB maps
arxiv(2024)
摘要
Relativistically energetic, non-thermal population of electrons can give rise
to unique CMB spectral distortion signatures which can be significantly
different from thermal Sunyaev-Zeldovich signal or y-distortion. These
signatures depend upon the spectrum of non-thermal electrons, therefore, a
detection can inform us about the existence and abundance of non-thermal
electrons in our universe. Using public CMB maps and data, we derive upper
limits on non-thermal y-parameter for a relativistic, power-law electron
distribution. With future CMB experiments, we may be in a position to detect or
put significantly tighter constraints on these signals which can affect our
understanding of non-thermal electron distributions in our universe.
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