BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Constraining physics and astrophysics with multifrequency CMB data
  - Fiona McCarthy (DAMTP)
DTSTART:20240313T134000Z
DTEND:20240313T140500Z
UID:TALK213184@talks.cam.ac.uk
CONTACT:Hannah Uebler
DESCRIPTION:The CMB anisotropies are measured in several microwave frequen
 cy bands. Having this frequency information allows us to separate signals 
 that are due to different sources. We can easily make maps that are sensit
 ive to specific frequency combinations\, and in this way isolate the contr
 ibution from the primary CMB (early-Universe) and various other CMB intera
 ctions such as the Sunyaev--Zel'dovich (SZ) effect (the scattering of the 
 CMB from electrons in the late Universe). I will talk about constraints on
  the SZ effect from Planck data using a new frequency-separation code\, py
 ilc\, which we use to isolate the signal while removing other late-Univers
 e biases\, in particular the infrared emission from star-forming galaxies.
  I will also show an application to beyond standard model interactions bet
 ween the CMB and a non-trivial dark sector\, and how we can use the CMB to
  constrain beyond-standard-model particle physics.
LOCATION:The Hoyle Lecture Theatre + Zoom 
END:VEVENT
END:VCALENDAR