HR: 09:00h
AN: SP31A-03    [Abstracts]
TI: Narrow-band Near Infrared Filtergram Observation of Light Bridges and Umbral Dots
AU: * Ma, J
EM: jxm1901@njit.edu
AF: Center for Solar and Terrestrial Research, University Heights, Newark, NJ 07102 United States
AU: Cao, W
EM: wcao@noao.edu
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: Denker, C
EM: cdenker@bbso.njit.edu
AF: Center for Solar and Terrestrial Research, University Heights, Newark, NJ 07102 United States
AU: Denker, C
EM: cdenker@bbso.njit.edu
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: Wang, H
EM: haimin@bbso.njit.edu
AF: Center for Solar and Terrestrial Research, University Heights, Newark, NJ 07102 United States
AU: Wang, H
EM: haimin@bbso.njit.edu
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AB: We are presenting the observations of the active region NOAA 10709 on December, 2004 using 0.12Å~narrow band filter centered around 1.56μm. The observation run was carried out using Dunn Tower Telescope of NSO (SacPeak) with high-order AO system. The averaged angular resolution of this observation is 0.5" or better. These high resolution data in near infrared offer a new view on the photospheric structures of sunspot near opacity minimum. By using the tunable near infrared narrow band filtergram, we are able to construct magnetic field strength map of sunspot. In particular, we will show the magnetic structure of light bridges and umbral dots.
DE: 3934 Optical, infrared, and Raman spectroscopy
DE: 7529 Photosphere
SC: Solar Physics Division - AAS [SP]
MN: 2005 Joint Assembly