Auroral Spectrograph (ASG)

☰	Auroral Spectrograph (ASG)

Auroral Spectrograph (ASG).

Scientific objectives
The observation aims at fully understanding the auroral formation processes at cusp/cleft polar latitude region by detecting time evolution of auroral emission lines along the meridian plane in a fairly wide wavelength range compared with existing ones.

This should be in close collaboration with EISCAT radar observations of electron density variations and conjunctive particle precipitation measurements by scientific satellites such as Cluster and MMS missions.

These observations together with numerical simulation of auroral emission will shed light on the formation and electrodynamical processes of high latitude aurora and electromagnetic linkage with solar magnetospheric system in greater detail.

Owner: National Institute of Polar Research, Japan (NIPR)
Contacts
PI: Yasunobu Ogawa
Address: National Institute of Polar Research, 10-3, Midori-cho, Tachikawa-shi, Tokyo 190-8518, Japan
E-mail: yogawa@nipr.ac.jp

Co-PI: Takeshi Sakanoi
Address:Faculty of Science, Tohoku University, 3-10-50-5 Aramaki-aza-aoba, Aoba-ku, Sendai 980-8578 Japan
Email: tsakanoi@pparc.gp.tohoku.ac.jp

Co-PI: Makoto Taguchi
Address:Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toyoshima-ku, Tokyo 171-8501 Japan
Email: taguchi@rikkyo.ac.jp

Instrument specifications
Time resolution: 60 or 120 seconds
Spatial coverage: 180 degrees along the geomagnetic meridian
Spatial resolution: 400m at 100 km height
Spectral resolution: 512 pixels across 420-740 nm, i.e. 0.6 nm