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SUMMARY:In-band spectral index techniques for extended radio sources
DTSTART;VALUE=DATE-TIME:20261028T173500Z
DTEND;VALUE=DATE-TIME:20261028T174500Z
DTSTAMP;VALUE=DATE-TIME:20261024T002059Z
UID:indico-contribution-3643@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Brianna Ball (University of Alberta)\nSpectral indic
 es are an effective technique for differentiating between thermal and non-
 thermal sources of radio emission. Most often\, spectral indices are deter
 mined using flux measurements taken from multiple observations with differ
 ent instruments. Since this data is not always available\, finding indices
  from a single telescope observation is desirable. The reliability of thes
 e in-band spectral indices has not been well studied\, particularly for ex
 tended sources. I will discuss three different techniques for finding in-b
 and spectral indices using EMU (Evolutionary Map of the Universe) data fro
 m ASKAP (the Australian Square Kilometre Array Pathfinder). These techniqu
 es include: integrating fluxes in sub-bands\, temperature-temperature plot
 s\, and utilizing the Taylor terms produced in the imaging process. I appl
 y these techniques to a selection of extended sources of radio emission\, 
 primarily supernova remnants (SNRs) and HII regions\, and assess if the in
 dices produced by the different techniques agree with the expected values.
  I examine how well the in-band techniques can differentiate between the t
 hermal (HII regions) and non-thermal (SNRs) source.\n\nhttps://nyx.physics
 .mcgill.ca/event/587/contributions/3643/
LOCATION:Online 
URL:https://nyx.physics.mcgill.ca/event/587/contributions/3643/
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