Conveners
Friday A
- Jack Sayers (Caltech)
Friday A
- Suzanne Madden (CEA Paris-Saclay)
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Yvette Perrott (Victoria University of Wellington)30/06/2023, 09:00
At temperatures above ~5 keV, the non-relativistic approximation used to derive the classical thermal Sunyaev-Zel'dovich effect spectrum begins to fail. When relativistic effects are included, the spectrum becomes temperature-dependent. This leads to both a problem and an opportunity: a problem, because when the temperature dependence is not accounted for the Compton-y estimate is biased;...
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Stefano Ettori (INAF-Osservatorio di Astrofisica e Scienza dello Spazio in Bologna)30/06/2023, 09:30
I will discuss how current (with XMM-Newton) and future X-ray observations (with XRISM and Athena) will be able to characterize the non-thermal pressure support in galaxy clusters, and how we can convert it in an estimate of the hydrostatic mass bias, also for a cosmological purpose.
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Michael Calzadilla (MIT)30/06/2023, 09:50
For years we have grappled with the “cooling flow problem” in galaxy clusters, where the massive reserves of hot ($10^7$ K) gas in the intracluster medium (ICM) have been universally observed to form stars with an efficiency of only 1-10%. Feedback from accreting active galactic nuclei (AGN) has been identified as the likely heating source capable of suppressing runaway cooling by up to two...
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Nicholas Battaglia (Cornell University)30/06/2023, 10:10
A new window into the growth and evolution of large-scale structure
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has opened up with the recent observations of the thermal and kinetic
Sunyaev-Zel’dovich (SZ) effects. I will review recent observations of
the SZ signals and highlight their expected rapid growth over the next
decade with upcoming cosmic microwave background experiments, like
Simons Observatory and CMB-S4. I will present... -
Golshan Ejlali (PhD student)30/06/2023, 11:10
Observing galaxies in millimeter continuum emission is vital to study the physical properties of the dusty interstellar medium as it provides constraints on the low-frequency end of the dust spectral energy distribution (SED). We present observations of NGC2146 (starburst spiral) and NGC2976 (peculiar dwarf) with the NIKA2 camera on the IRAM-30m telescope, as part of the IMEGIN guaranteed time...
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Stavroula Katsioli (National and Kapodistrian University of Athens, Department of Physics & National Observatory of Athens, IAASARS)30/06/2023, 11:35
High resolution observations of nearby galaxies at mm wavelengths allow us to study emission from interstellar medium in great detail. In the framework of the IMEGIN Large program, the NIKA2 camera on the IRAM 30-m telescope is used to map 22 nearby galaxies at 1.15 and 2 mm and at resolutions of 11.1" and 17.6", respectively. At these wavelengths we are able to trace the emission from very...
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