Modeling Line-Intensity Mapping

Adviser: Ely Kovetz

Student: טטיאנה שבצ'וק


Line-intensity mapping is a novel method which measures the integrated emission of atomic and molecular spectral lines from galaxies and the intergalactic medium over a broad range of frequencies, using far lower resolution and sensitivity instruments than would be required to detect individual objects, especially at high redshifts. Targets for LIM range from the 21-cm emission from neutral hydrogen in the IGM to atomic and molecular line emission from within galaxies. Among the target lines are ones that are closely related with star-formation processes in galaxies. These include rotational carbon-monoxide (CO) transitions, the [CII] fine-structure line, H-α, H-β, [OIII], etc. Hitherto, these line emissions have been modelled separately, using different assumptions, with scaling relations calibrated using specific observations at particular redshifts, requiring significant extrapolation if used elsewhere. We will take the first step towards standardizing the modelling of these lines to enable the use of their cross correlation to extract more information from the measured maps.
Advertised on March 11, 2021
Abstract added on March 11, 2021
Abstract approved on March 11, 2021 by Kovetz, Ely (kovetz)