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SUMMARY:Deciphering the Enigma of the Cosmic Ray Anisotropy - Vanessa Lóp
 ez-Barquero ()
DTSTART:20230503T124000Z
DTEND:20230503T130500Z
UID:TALK200557@talks.cam.ac.uk
CONTACT:Hannah Uebler
DESCRIPTION:Over the past decade\, various experiments\, such as IceCube a
 nd HAWC\, have observed cosmic-ray anisotropy at different angular scales 
 in a wide energy range. However\, no comprehensive or satisfactory explana
 tion has been put forth to date. The arrival distribution of cosmic rays a
 t Earth is the convolution of the distribution of their sources and of the
  effects of geometry and properties of the magnetic field through which pa
 rticles propagate. It is generally believed that the anisotropy topology a
 t the largest angular scale is adiabatically shaped by diffusion in the st
 ructured interstellar magnetic field. On the contrary\, the medium-and sma
 ll-scale angular structure could be an effect of nondiffusive propagation 
 of cosmic rays in perturbed magnetic fields. A possible explanation for th
 e observed anisotropy at the TeV energy scale may be the effect of particl
 e propagation in the heliosphere. Charged particles that the Sun continuou
 sly emits envelop our planet and its neighbours. This creates the heliosph
 ere\, a massive bubble that surrounds the Sun and deforms the interstellar
  medium’s magnetic field. In this talk\, we explore the possibility that
  the heliosphere affects the cosmic ray energy and arrival distributions. 
LOCATION:The Hoyle Lecture Theatre + Zoom 
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