Spinning dust
Encyclopedia
"Spinning dust" or more formally Anomalous Microwave Emission (AME) is a galactic emission mechanism proposed to be generated by the electric dipole of very rapidly spinning (10-60 GHz) extremely small (nanometer) dust grains (Draine & Lazarian 1998). This was first discovered as a by-product of CMB
experiments which make very sensitive measurements of the microwave sky which have to identify and remove contamination from the galaxy.
Differential Microwave Radiometer observations at centimeter wavelengths with DIRBE dust emission at 140 μm, while Leitch et al had correlated Owens Valley Radio Observatory ring observations at 14.5 and 32 GHz with IRAS
100 μm. The suggestion at the time was the correlation was due to free-free or Bremsstrahlung
emission from ionized gas caused by young hot stars which are formed in these dusty regions.
CMB
CMB can mean:*The IATA airport code for Bandaranaike International Airport, Colombo – Sri Lanka's only international airport*C.M.B., the debut album of American R&B and pop group Color Me Badd...
experiments which make very sensitive measurements of the microwave sky which have to identify and remove contamination from the galaxy.
History
It was first seen as a surprising statistical correlation of microwave sky variations with far infrared (FIR) emission (Kogut et al 1996, Leitch et al 1997). This signal traced the warm galactic dust emission which was unexpected as the extrapolated infrared dust signal to microwave frequencies should have been at least an order of magnitude lower than that seen. Kogut et al had correlated COBECOBE
The COsmic Background Explorer , also referred to as Explorer 66, was a satellite dedicated to cosmology. Its goals were to investigate the cosmic microwave background radiation of the universe and provide measurements that would help shape our understanding of the cosmos.This work provided...
Differential Microwave Radiometer observations at centimeter wavelengths with DIRBE dust emission at 140 μm, while Leitch et al had correlated Owens Valley Radio Observatory ring observations at 14.5 and 32 GHz with IRAS
IRAS
The Infrared Astronomical Satellite was the first-ever space-based observatory to perform a survey of the entire sky at infrared wavelengths....
100 μm. The suggestion at the time was the correlation was due to free-free or Bremsstrahlung
Bremsstrahlung
Bremsstrahlung is electromagnetic radiation produced by the deceleration of a charged particle when deflected by another charged particle, typically an electron by an atomic nucleus. The moving particle loses kinetic energy, which is converted into a photon because energy is conserved. The term is...
emission from ionized gas caused by young hot stars which are formed in these dusty regions.