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SUMMARY:From SuperMAG to SNIPE Hunt: Using the Earth to search for ultrali
 ght dark matter
DTSTART:20260408T110000Z
DTEND:20260408T120000Z
DTSTAMP:20260420T030600Z
UID:indico-event-2533@indico.ifae.es
DESCRIPTION:Speakers: Saarik Kalia\n\nUltralight particles\, such as dark 
 photons or axions\, are exciting candidates for dark matter that require n
 ovel detection schemes to probe.  If these candidates couple to electroma
 gnetism\, they can generate observable electromagnetic fields inside an ex
 perimental apparatus\, which scale with the apparatus's size.  In this ta
 lk\, I will summarize recent efforts to utilize the Earth as an apparatus 
 for the detection of extremely low-mass dark matter.  Dark-photon or axio
 n dark matter can source an oscillating magnetic field signal at the Earth
 's surface\, which can be detected with a global array of unshielded magne
 tometers.  This field is spatially coherent across the entire Earth's sur
 face\, and its magnitude is enhanced by the large radius of the Earth.  I
  will discuss experimental searches for this effect in existing datasets m
 aintained by the SuperMAG collaboration and dedicated observations by the 
 SNIPE Hunt collaboration.  These initiatives represent the strongest expe
 rimental constraints on dark-photon and axion parameter space across a wid
 e mass range.  I will also discuss a proposed technique to probe higher m
 asses by measuring the local curl of the magnetic field.\n\nhttps://indico
 .ifae.es/event/2533/
LOCATION:IFAE Seminar Room (In-person)
URL:https://indico.ifae.es/event/2533/
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