Description
https://www.ihp.fr/fr/live-amphitheatre-hermite
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Ludovic Montier (IRAP)18/12/2024 10:00
I will present the status of the LiteBIRD JAXA mission, after it entered in reformation period since September 2025.
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Dr Mathieu Remazeilles (IFCA, CSIC-UC)18/12/2024 10:30
This talk will highlight the LiteBIRD space mission's capability to map the thermal Sunyaev-Zeldovich (SZ) effect, arising from the scattering of CMB photons by hot baryonic gas within and around galaxy clusters. Although primarily designed to search for large-scale CMB B-mode polarization, LiteBIRD will deliver full-sky maps in total intensity with unprecedented sensitivity across 15...
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Miguel GOMES (Institut d'Astrophysique de Paris)18/12/2024 10:50
Future satellite missions focusing on the tensor-to-scalar ratio r will likely include a rotating half-wave plate (HWP) device in order to precisely recover the B-mode polarization signal. Patanchon [2023] modeled the effect of HWP systematic imperfections leading to Intensity to Polarization (IP) leakage on the measurement of the B-mode signal. This model is now implemented in the LiteBIRD...
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Elisa Russier18/12/2024 11:10
PICO is a space mission concept submitted by NASA to the Astro2020 Decadal Review panel as a candidate Inflation Probe (IP) and such a probe was selected for implementation. In the original submission the team showed that with 5 years of observations PICO would be able to place more than 20 sigma constraint on r=0.003 and reject r=0.0005 with 5 sigma confidence. These tight constraints were...
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Anaïs Besnard (Institut d'Astrophysique Spatiale (IAS))18/12/2024 11:30
Not long after the Planck space mission launch, it appeared that signals from the detectors operated at 100 mK of one of its instruments, HFI, were affected by cosmic rays. The heat dissipation in the detectors due to these particles hits created spurious signals appearing as glitches in the data. Further post-launch studies have allowed for most of these glitches to be removed.
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Several space... -
Alexandre Adler (UC Berkeley/LBNL)18/12/2024 11:50
Taurus is a balloon-borne CMB experiment, planning to launch in 2027. It will fly from Wanaka, New Zealand, as the payload of a NASA Super Pressure Balloon in the stratosphere of the Southern Hemisphere, giving it a view of more than half of the sky. By imaging at night for several weeks with its three refractor telescopes, Taurus will map the polarized microwave emission of the sky in four...
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Valentin SAUVAGE18/12/2024 12:10
Experimental cosmology is always in needs of innovative more performant technology for longer and more sensitive observations. Cooling systems can be a limitation in term of the mission lifetime and temperature stability of the sub-K detection chains. A Closed-Cycle Dilution Refrigerator (CCDR), providing continuous cooling at ultra-low temperatures (100 mK) using helium isotopes 3He and 4He,...
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