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Benjamin Schmitt (University of Pennsylvania)20/09/2023, 11:15
Measurement of the polarized Cosmic Microwave Background (CMB) over the past few decades has enabled precision probes of the evolutionary history, composition, and dynamics of the primordial Universe. Next-generation CMB experiments will extend this scientific reach, allowing for tests of the inflationary theory of the early Universe, driven through constraints on the tensor-scalar ratio "r"...
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Prof. Paolo de Bernardis (Sapienza universitò di Roma and INFN Roma)21/09/2023, 09:00
The spectrum of the Cosmic Microwave Background (CMB) is remarkably close to a 2.725K blackbody. However, small deviations are expected, due to several interesting pre- and post- recombination phenomena. Here we describe an instrument, the COSmic Monopole Observer (COSMO), aimed at measuring the largest spectral distortion in the 100-300 GHz range using a cryogenic Differential Fourier...
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Mario Zannoni (University of Milano Bicocca)21/09/2023, 09:30
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Amy Bender21/09/2023, 10:00
Observations of the microwave sky enable a vast range of scientific explorations ranging from particle physics and cosmology to astronomy. CMB-S4 is an upcoming ground-based microwave experiment that plans to site telescope at the South Pole in Antarctica as well as in the Atacama desert in Chile. These telescopes will observe the sky with approximately 500,000 superconducting detectors, ...
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Alexandra Rahlin (University of Chicago)21/09/2023, 11:00
The South Pole provides one of the most pristine sites on Earth for observations of the microwave sky, enabling studies of a host of astrophysical and cosmological phenomena. The South Pole Telescope (SPT), online at Amundsen-Scott South Pole Station since 2007, takes advantage of the stable desert climate to image the sky with unprecedented sensitivity. The third-generation camera, SPT-3G,...
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Marion Dierickx (Harvard University)21/09/2023, 11:30
The theory of cosmological inflation was developed in response to longstanding questions about the origins of our universe. It predicts a specific spectrum of density perturbations that arose during the Big Bang, which has been corroborated by observations of the Cosmic Microwave Background (CMB). This talk will focus on a decisive prediction of inflation that has so far eluded observational...
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Mr Suren Gourapura (Princeton University Graduate Student)21/09/2023, 12:00
SPIDER is a balloon-borne CMB polarimeter that has measured 4.8% of the sky with degree-scale angular resolution. Launching from McMurdo, Antarctica, we benefit from the high altitude and long flights achievable from NASA’s Long Duration Balloon facility, which provides access to space-like observing conditions. Using the data from our first flight in 2015, SPIDER published a constraint on...
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Alessandro Paiella (Sapienza, University of Rome)21/09/2023, 14:00
Cosmic microwave background (CMB) photons crossing galaxy clusters
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can be scattered by hot electrons in the ionized intracluster medium
(ICM). This results in a small change of the spectrum of the CMB in
the direction of clusters of galaxies. The spectrum of the effect is
characteristic, with a brightness decrease at f < 217 GHz and an
increase at f > 217 GHz, independent of the redshift... -
Alberto Pellizzoni (INAF-Osservatorio Astronomico di Cagliari)21/09/2023, 14:30
Solaris is a scientific and technological project aimed at the development of a smart Solar monitoring system at high radio frequencies based on single-dish imaging techniques (https://sites.google.com/inaf.it/solaris). It combines the implementation of dedicated and interchangeable high-frequency receivers on existing small single-dish radio telescope systems (1.5/2.6m class) available in our...
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Mario Zannoni (University of Milano Bicocca)
COSMO experiment is aimed at detecting CMB spectral distortions from Concordia Station in Antarctica.
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It is based on a cryogenic FFT spectrometer using KIDs as fast detectors. The reduced number of pixels and the fast acquisition rate, tens of kHz, prompted us to develop an in-house heterodyne readout electronics based on commercial components. In this contribution I will describe in detail...
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