SUNSPOT


Also found in: Dictionary, Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to SUNSPOT: Sunspot cycle
AcronymDefinition
SUNSPOTStudy of Unitization Systems, Policies, and Techniques
References in periodicals archive ?
Joten Okamoto (NAOJ Fellow) and Takashi Sakurai (Professor Emeritus of NAOJ) were analyzing data taken by the Solar Optical Telescope onboard HINODE, when they noticed the signature of strongly magnetized iron atoms in a sunspot.
In particular, they wanted to know why this last sunspot cycle was the weakest one in a hundred years (S&T: Nov.
The sunspot also emitted a stream a high-speed protons in a phenomenon called solar energetic particle event, which was seen at 12:45 p.
Comparison of Sunspot Area Data Bases, Monthly Notices of the Royal Astronomical Society 323, pp.
The 4-inch heliographic telescope at SAAO in Cape Town, erected in 1876, is used to view sunspots.
To consult with a Reflections Center physician about the best sunspot remover, visit http://www.
It has been known for more than a century that sunspots are compact, concentrated magnetic fields and that they appear dark because the magnetism prevents heat from rising to the surface from the superhot interior.
The group was near the CM on Aug 15 when the leading penumbral sunspot became the largest in the group, the total area being 310 millionths.
One of the earliest reports of increased sunspot emissivity relative to the photosphere dates back to 1875 and Samuel Langley*: "With larger images and an improved instrument, I found that, in a complete ring ofthe solar surface, the photosphere, still brilliant, gave near the limb absolutely less heat than the umbra of the spots'" [44, p.
The sunspot known as region 1476 will be in direct alignment with Earth in a few days, increasing the likelihood of geomagnetic storms, the National Weather Service's Space Weather Prediction Centre said.
The citation of the Sunspot award reads: "For a cumulative contribution since 1999 of 1 500 sunspot observations in support of the American Relative Sunspot Number program and service to the AAVSO Solar observing program.
Most amazing of all, these sunspots alter from one day to the next, sometime dramatically so.