Low-frequency Radio Recombination Lines Away from the Inner Galactic Plane

Diffuse radio recombination lines (RRLs) in the Galaxy are possible foregrounds for redshifted 21 cm experiments. We use EDGES drift scans centered at −26.°7 decl. to characterize diffuse RRLs across the southern sky. We find that RRLs averaged over the large antenna beam (72° × 110°) reach minimum...

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Veröffentlicht in:	The Astronomical journal 2024-01, Vol.167 (1), p.2
Hauptverfasser:	Vydula, Akshatha K., Bowman, Judd D., Lewis, David, Crawford, Kelsie, Kolopanis, Matthew, Rogers, Alan E. E., Murray, Steven G., Mahesh, Nivedita, Monsalve, Raul A., Sims, Peter, Samson, Titu
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplitudes Antennas Beams (radiation) Galaxies H alpha line Interstellar matter Interstellar medium LF radio Local thermodynamic equilibrium Noise levels Radio spectroscopy Reionization Southern sky the Milky Way
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