Journals Digest RSS

Paolo Gondolo et al 2022 ApJ 935 11
If present during the epoch of reionization, dark stars — hypothetical stars powered by the annihilation of dark matter — could provide an explanation for the observed optical depth of the cosmic microwave background.

Missagh Mehdipour et al 2022 ApJL 934 L24
New observations reveal that the highly variable winds arising from the accretion disk at the center of the active galaxy NGC 5548 are linked to the large changes in the galaxy’s X-ray flux.
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