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Astrophysical maser, source of stimulated spectral line emission
A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished
Megamaser
LINER galaxy in the constellation Coma Berenices
galaxy is found to contain an OH megamaser or a gigamaser. IRAS F12032+1707 is widely known to be the most luminous megamasers detected. Its host galaxy is
IRAS_F12032+1707
Galaxy in the constellation Cetus
It is also classified as a Seyfert type 2 galaxy and such contains a megamaser. NGC 1194 is categorized as an inclined galaxy of type S0 with its position
NGC_1194
Galaxy in the constellation Canes Venatici
"anomalous arms" detectable using an X-ray telescope. M106 has a water vapor megamaser (the equivalent of a laser operating in microwave instead of visible light
Messier_106
Galaxy in the constellation Leo
radiation and making UGC 6093's core shine excessively. This galaxy is also a megamaser, which means that it acts as a giant astronomical laser generating microwaves
UGC_6093
Galaxy in the constellation Hydra
active Seyfert 2 type galaxy. Additionally, NGC 5495 is known to host a megamaser. Further evidence shows signs of H2O maser emission, detected via 70m
NGC_5495
Natural source of microwave radiation emission
any previous source.[12] This was termed a megamaser because of its great luminosity; many more megamasers have since been discovered. A weak disk maser
Astrophysical_maser
Observation in physical cosmology
the Hubble constant is 69.8+1.9 −1.9 (km/s)/Mpc. In February 2020, the Megamaser Cosmology Project published independent results based on astrophysical
Hubble's_law
Galaxy in the constellation Hercules
small and also round. This galaxy is known to host a triple peaked water megamaser. NGC 6264 is categorized as a barred spiral galaxy of Type Sb or Type
NGC_6264
Astronomer from Italy
Charlottesville, Virginia, focusing on physical cosmology and megamasers as part of the Megamaser Cosmology Project. In 2011, she began working as an astronomer
Violette_Impellizzeri
Spiral galaxy in the constellation Gemini
; Kadler, M. (September 2017). "Radio continuum of galaxies with H2O megamaser disks: 33 GHz VLA data". Astronomy & Astrophysics. 605: A84. arXiv:1706
IC_485
Galaxy in the constellation Libra
revolution, forming a moderately chaotic pattern. The galaxy hosts a hydroxyl megamaser. NGC 5861 is the foremost member of a small galaxy group that also includes
NGC_5861
Galaxy merger located in the constellation Virgo
through targeted surveys, observations find IRAS 13218+0552 hosts an OH megamaser (OHM), producing nonthermal emission from the hydroxyl (OH) molecules
IRAS_13218+0552
Device for producing coherent EM waves in the sub-visible spectrum
powerful masers, associated with active galactic nuclei, are known as megamasers and are up to a million times more powerful than stellar masers. The meaning
Maser
Galaxy in the constellation Lynx
2011). "The Megamaser Cosmology Project. III. Accurate Masses of Seven Supermassive Black Holes in Active Galaxies with Circumnuclear Megamaser Disks". The
NGC_2273
Galaxy in the constellation Cetus
central shape appearance. A water megamaser source has been detected in the galaxy. The luminosity of the megamaser emission is estimated to be 1.0 L☉
IC_184
Class of active galaxies with very bright nuclei
4258), one of the best-known Seyfert galaxies, which has a water vapor megamaser in its nucleus seen by 22 GHz line of ortho-H2O NGC 262, an example of
Seyfert_galaxy
Interacting galaxy pair in the constellation Virgo
designated as MCG+01-38-004 and MCG+01-38-005, is a pair of interacting megamasers in the constellation Virgo, roughly 400,000,000 light-years (120,000,000 pc)
NGC_5765
Galaxy in the constellation of Ophiuchus
of Ophiuchus. This is a well-studied galaxy hosting an hydroxyl (OH) megamaser, first discovered by the Nancay radio telescope in 1985. The redshift
IRAS_17208−0014
Neutral form of the hydroxide ion
Aubrey D.; Henkel, Christian (1989). "Molecular outflows in powerful OH megamasers". The Astrophysical Journal. 346: 680. Bibcode:1989ApJ...346..680B. doi:10
Hydroxyl_radical
Galaxy in the constellation Pisces
and broad. With an isotropic luminosity of L = 320 LΘ, this suggests a megamaser. The maser features are found distributed, which they contain a velocity
IC_1481
Luminous infrared galaxy in the constellation Serpens
the galaxy. Arp 220 contains at least two bright maser sources, an OH megamaser, and a water maser. In October 2011, astronomers spotted a record-breaking
Arp_220
Galaxy in the constellation Centaurus
1093/mnras/stw1659. Pesce, D. W.; et al. (August 2016). "Submillimeter H2O Megamasers in NGC 4945 and the Circinus Galaxy". The Astrophysical Journal. 827 (1)
NGC_4945
Galaxy in the constellation Cetus
classified as a luminous infrared galaxy and such contains a hydroxide (OH) megamaser with at least two components showing a velocity separation gap of 200
IRAS_F01364−1042
Spiral galaxy in the constellation Libra
angle of 150°. Seyfert galaxies such as NGC 5793 are known to house megamasers. Megamasers can have a luminosity of thousands of times greater than the Sun
NGC_5793
Galaxy in the constellation of Ursa Major
M☉ based on stellar velocity dispersion. The galaxy also hosts a water megamaser, probably originating from the nucleus. The nucleus emits hard X-rays
UGC_5101
(robot) Maser Matrix-assisted laser desorption/ionization McCumber relation Megamaser Mercury laser Metal aromaticity Michelson interferometer Microplasma Microprobe
List_of_laser_articles
Galaxy in the constellation of Virgo
have no clear axis of symmetry. The galaxy has been found to host an H2O megamaser. NGC 5506 is the foremost galaxy in a galaxy group known as the NGC 5506
NGC_5506
Galaxy in the constellation Eridanus
Stern, D.; Zhang, W. W. (13 April 2016). "NuSTAR observations of water megamaser AGN". Astronomy & Astrophysics. 589: A59. arXiv:1602.03185. Bibcode:2016A&A
NGC_1386
Galaxy in the constellation Pavo
connected with the Superantennae. The Superantennae is known to show megamaser emission. According to Atacama Large Millimeter Array, an extremely luminous
IRAS_19254−7245
Cancelled radio satellite
science targets: Galactic masers in star-forming region Extragalactic Megamasers Radio quiet quasars X-ray binaries, SNR, gravitational lenses etc. HALCA
Astro-G
Galaxy in the constellation of Coma Berenices
Thomasson, Peter (2017-04-17). "The emission structure of formaldehyde megamasers". Monthly Notices of the Royal Astronomical Society. 469 (1): 916–929
IC_860
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