Submillimeter observations of the sun from the James Clerk Maxwell Telescope

Journal Article · Sun Apr 01 00:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185706· OSTI ID:6806610

Lindsey, C A; Yee, S; Roellig, T L; Hills, R; Brock, D ^[1]

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1. Hawaii Univ., Honolulu (USA) NASA, Ames Research Center, Moffett Field, CA (USA) Mullard Radio Astronomy Observatory, Cambridge (England) Joint Astronomy Centre, Hilo, HI (USA)

The first submillimeter solar observations from the 15 m James Clerk Maxwell Telescope (JCMT) on Mauna Kea are reported. The JCMT submillimeter heterodyne receiver is used to observe the sun in 850 micron radiation. These are the first submillimeter observations of features on the size scale of the chromospheric supergranular network and of sunspots. A comparison is made between 850 micron images and calcium K line images of the chromospheric supergranular network in the quiet sun and in plage. Images of sunspots are given, noting that their 850 micron brightness is comparable to, or somewhat greater than, that of the quiet sun. 7 refs.

• OSTI ID: 6806610
• Journal Information: Astrophysical Journal; (USA), Vol. 353; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SOLAR GRANULATION
IMAGES
SUN
INFRARED RADIATION
SUNSPOTS
CHROMOSPHERE
COMPARATIVE EVALUATIONS
EQUILIBRIUM
SOLAR ATMOSPHERE
ATMOSPHERES
ELECTROMAGNETIC RADIATION
MAIN SEQUENCE STARS
RADIATIONS
SOLAR ACTIVITY
STARS
STARSPOTS
STELLAR ACTIVITY
640104* - Astrophysics & Cosmology- Solar Phenomena