BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Katelin Schutz (McGill Space Institute) DTSTART:20211116T193000Z DTEND:20211116T203000Z DTSTAMP:20260423T005732Z UID:nhetc/22 DESCRIPTION:Title: A strophysical plasmas\, phase space\, and searches for new particles\nb y Katelin Schutz (McGill Space Institute) as part of NHETC Seminar\n\n\nAb stract\nAstrophysical plasmas can be an abundant source of particles with a small coupling to photons\, for instance in dark sectors with a kinetica lly mixed U(1). In many situations\, the decay of plasmons (photons with a n in-medium effective mass) is the most efficient process for generating n ew kinds of particles. In this talk\, I will discuss two distinct examples : the production of gravitationally bound particles in the sun and the fre eze-in of dark matter in the early Universe. In the former case\, I will s how how gravitationally bound particles from the sun may be detectable wit h an experimental setup that coherently deflects the solar MCP wind\, gene rating an oscillating electric field in a shielded detector. In the latter case\, I will show that dark matter freeze-in from plasmon decay may be d etectable through its cosmological clustering and through a drag effect im parted on the photon-baryon fluid prior to recombination. If there is suff icient time\, I will also discuss the detection of axion dark matter decay that is stimulated by the synchrotron radiation coming from the plasma su ffusing supernova remnants. In all of these examples\, the unique phase sp ace of new particles provides the main observational handle for discovery. \n LOCATION:https://researchseminars.org/talk/nhetc/22/ END:VEVENT END:VCALENDAR