HR: 0800h
AN: SM21A-0348 [Abstracts]
TI: Observation of Proton aurora with a meridian-scanning filter-tilting photometer at Athabasca
(62.6MLAT), Canada
AU: * Sakaguchi, K
EM: kaori@stelab.nagoya-u.ac.jp
AF: Solar-Terrestrial Environment Laboratory, Nagoya University, 3-13, Honohara, Toyokawa, Aichi, 442-8507
Japan
AU: Shiokawa, K
EM: shiokawa@stelab.nagoya-u.ac.jp
AF: Solar-Terrestrial Environment Laboratory, Nagoya University, 3-13, Honohara, Toyokawa, Aichi, 442-8507
Japan
AU: Ieda, A
EM: ieda@stelab.nagoya-u.ac.jp
AF: Solar-Terrestrial Environment Laboratory, Nagoya University, 3-13, Honohara, Toyokawa, Aichi, 442-8507
Japan
AU: Ogawa, T
EM: ogawa@stelab.nagoya-u.ac.jp
AF: Solar-Terrestrial Environment Laboratory, Nagoya University, 3-13, Honohara, Toyokawa, Aichi, 442-8507
Japan
AU: Connors, M
EM: martinc@athabascau.ca
AF: Athabasca University, 1 University Drive, Athabasca, AB T9S 3A3
Canada
AU: Donovan, E
EM: eric@phys.ucalgary.ca
AF: University of Calgary, 2500 University Drive, Calgary, AB T2N 1N4
Canada
AB:
The energy of auroral protons can be measured through Doppler-shift of the hydrogen Balmer line (486.1nm), by tilting a
narrow-band interference filter. However, it has been difficult to measure wavelength of the Doppler shift accurately,
because the peak wavelength of the filter drifts due to changes of the filter temperature. We have developed a
meridian-scanning filter-tilting photometer with a new interference filter, for which the temperature drift coefficient
(0.002 nm/K) is about 1/10 of that of previous filters. The photometer was installed at Athabasca, Canada (54.7°N,
246.7°E, MLAT=62.6°N) in September 3, 2005, with a highly sensitive all-sky cooled-CCD imager and an induction
magnetometer. The Athabasca station is located equaterward of the auroral oval, where proton aurora measurement has not been
made sufficiently. In the presentation, we will show details of the photometer setup and initial results of the proton
aurora measurement in Athabasca.
DE: 0310 Airglow and aurora
DE: 2455 Particle precipitation
DE: 2704 Auroral phenomena (2407)
DE: 2716 Energetic particles: precipitating
DE: 2778 Ring current
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005