2019 EJRNL PP TOMOHIRO FUJITA 1.pdf)u
Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
We find that the polarimetric observations of protoplanetary disks are useful to search for ultralight axion
dark matter. Axion dark matter predicts the rotation of the linear polarization plane of propagating light, and
protoplanetary disks are ideal targets to observe it. We show that a recent observation puts the tightest
constraint on the axion-photon coupling constant for an axion mass m ? 10?21 eV.