Browsing A) Producción científica UCSC by Subject "Dark ages"

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Modeling the radio background from the first black holes at cosmic dawn: implications for the 21 cm absorption amplitude

Ewall-Wice, A.; Chang, T.-C.; Lazio, J.; Doré, O.; Seiffert, M.; Monsalve, Raúl (2018-11-20)

We estimate the 21 cm radio background from accretion onto the first intermediate-mass black holes between z ≈ 30 and z ≈ 16. Combining potentially optimistic, but plausible, scenarios for black hole formation and growth ...
Spectral index of the diffuse radio background between 50 and 100 MHz

Mozdzen, T. J.; Mahesh, N.; Monsalve, R. A.; Rogers, Alan E.E.; Bowman, J. D. (2019-03)

We report the spectral index of diffuse radio emission between 50 and 100 MHz from data collected with two implementations of the Experiment to Detect the Global EoR Signature (EDGES) low-band system. EDGES employs a ...