Astronomy & Astrophysics Seminar: Cosmology with Line-Intensity Mapping

Dr. Ely Kovetz, Ben-Gurion University

10 May 2023, 14:00 
Shenkar Physics Building, Holcblat Hall 007 
Astronomy & Astrophysics Seminar




Line-intensity mapping (LIM) is an emerging approach to survey the Universe, using relatively low-aperture instruments to scan large portions of the sky and collect the total spectral-line emission from galaxies and the intergalactic medium. Mapping the intensity fluctuations of an array of lines offers a unique opportunity to probe redshifts well beyond the reach of other cosmological observations, access regimes that cannot be explored otherwise, and exploit the enormous potential of cross-correlations with other measurements. Over the next decade, LIM will transition from a pathfinder era of first detections to an early-science era where data from more than a dozen missions will be harvested to yield new insights and discoveries. With a focus on cosmology science goals, I will review the primary target lines for these missions, describe the different approaches to modeling their intensities and fluctuations, survey the scientific prospects of their measurement, present the formalism behind the statistical methods to analyze the data, and motivate the opportunities for synergy with other observables.



Seminar Organizer: Prof. Dan Maoz

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