In today’s astrobite, we discuss the opacity of the Universe to high energy photons. The cosmic gamma-ray horizon, constrained by the authors of this paper, is a measure of this opacity, a cosmological probe and means of estimating blazar redshifts.
Follow us on Twitter
Like us on Facebook
More Posts About
statistics planetary science radio astronomy astronomical methods supernovae habitability stellar evolution star formation observations Kepler cosmology transits spectroscopy theory AGN stars galaxies solar system accretion binary stars astronomy astrophysics planet formation interstellar medium black holes exoplanets dark matter simulations galaxy evolution instrumentation