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Astrophysical maser. Aurorae on the north pole of Jupiter generate cyclotron masers (Hubble) An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular clouds, comets, planetary atmospheres, stellar ...
The term is an acronym for microwave amplification by stimulated emission of radiation. First suggested by Joseph Weber, the first maser was built by Charles H. Townes, James P. Gordon, and Herbert J. Zeiger at Columbia University in 1953. Townes, Nikolay Basov and Alexander Prokhorov were awarded the 1964 Nobel Prize in Physics for theoretical ...
Megamaser. A megamaser acts as an astronomical laser that beams out microwave emission rather than visible light (hence the ‘m’ replacing the ‘l’). [1] A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished from other astrophysical masers by ...
IC 485 is a candidate disc-maser galaxy. [3] It has a projected distance of 122.0 ± 8.5 megaparsecs. [4] [5] The morphology classification of the galaxy is Sa, and it has a low luminous active galactic nucleus (AGN) of L X ~ 5 x 10 42 erg s-1. The AGN activity of IC 485 has been debated. It is either classfied a LINER [6] [5] or a Seyfert type ...
Amy Mainzer (born January 2, 1974) is an American astronomer, specializing in astrophysical instrumentation and infrared astronomy.She was the deputy project scientist for the Wide-field Infrared Survey Explorer and is the principal investigator for its NEOWISE extension to study minor planets [1] and for the future Near Earth Object Surveyor space telescope mission.
Patrick Thaddeus (June 6, 1932 – April 28, 2017) [1] was an American professor and finished his career as the Robert Wheeler Willson Professor of Applied Astronomy Emeritus at Harvard University.
The Astrophysical Journal, The Globular Cluster Luminosity Function as a Distance Indicator: Dynamical Effects, Ostriker and Gnedin, May 5, 1997. An Introduction to Distance Measurement in Astronomy, Richard de Grijs, Chichester: John Wiley & Sons, 2011, ISBN 978-0-470-51180-0.
Astronomical radio source. An astronomical radio source is an object in outer space that emits strong radio waves. Radio emission comes from a wide variety of sources. Such objects are among the most extreme and energetic physical processes in the universe.