Variability, flaring and coherence -- the complementarity of the maser and superradiance regimes

Christopher M. Wyenberg; Fereshteh Rajabi; Gordon C. MacLeod; Martin Houde; Sharmila Goedhart; Stefanus P. van den Heever; Yoshihiro Tanabe; Yoshinori Yonekura

Variability, flaring and coherence -- the complementarity of the maser and superradiance regimes

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arxiv 2307.05274 v1 pith:T5AQ5YUG submitted 2023-07-11 astro-ph.GA

Martin Houde , Fereshteh Rajabi , Gordon C. MacLeod , Sharmila Goedhart , Yoshihiro Tanabe , Stefanus P. van den Heever , Christopher M. Wyenberg , Yoshinori Yonekura This is my paper · ORCID

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keywords masersuperradianceflaringcoherencediscussradiationrolevariability

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We discuss the role that coherence phenomena can have on the intensity variability of spectral lines associated with maser radiation. We do so by introducing the fundamental cooperative radiation phenomenon of (Dicke's) superradiance and discuss its complementary nature to the maser action, as well as its role in the flaring behaviour of some maser sources. We will consider examples of observational diagnostics that can help discriminate between the two, and identify superradiance as the source of the latter. More precisely, we show how superradiance readily accounts for the different time-scales observed in the multi-wavelength monitoring of the periodic flaring in G9.62+0.20E.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Fast Population Leakage in Astronomical Masers: Maser Amplification and Transient Superradiance
astro-ph.HE 2026-07 reject novelty 5.0 of 10

In a three-level maser model, a fast competing decay channel on the shared upper level does not automatically suppress superradiance; the 6.7 GHz methanol flare in S255IR-NIRS3 can still be reproduced when the leakage...

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