Weibin Shi, Xiaohui Sun, Wolfgang Reich Jinlin Han, Patricia Reich, Richard Wielebinski
Partner Group of MPIfR at NAOC
Primary results for 6cm polarization Survey of the Galactic Plane
Motivation: Go to higher frequency ( previously 11cm, 21cm )
little affected by foreground Faraday depolarization
The same HPBW with Effelsberg 21 cm data
Survey products and scientific contribution: Absolute calibrated TP & PI maps of the Galactic plane:
construct foreground template for CMB polarizationunderstand magnetic field structure of our Galaxydisentangle ISM structure of the Galaxy combined
other database
Need to observe : longitude about 10deg to 240deg, latitude -5deg to 5deg, about 2300 square degree.
Observation Status
Good part 46.1deg: 95.9deg to 142deg,Have reduced 33.1deg: 95.9deg to 129deg,No reduction 13deg: 129deg to 142deg.
B direction: every part is 2deg x 10deg (3h25m) or 2.2deg x 10deg (3h45m)
L direction: The width: 2.6deg The length: consider Galactic structure
Observation Strategy
Map Observation
Receive telescope position once every secondscan velocity 2' / sscan spacing 3' integration time 1.5sone night can observe two regions
Data Reduction● Set baselines● Correct parallactic angles● Edit spikes, jumps and scanning
effects● Calibration● Weave● Combination● Absolute Calibration
Supernova Remnants
G106.3+2.7
G109.1-1.0 CTB109
G111.7-2.1 Cas A
G114.3+0.3G116.5+1.1
G116.9+0.2 CTB1
G120.1+1.4
G126.2+1.6
G127.1+0.5 R5
Next we will do
•more observation•more reduction•compare 6cm, 11cm, 21cm to obtain Spectral index•confirm sources (Supernova Remnants, HII regions)• Get flux intensity•try to find some new sources•Analyze absolute calibrated TP & PI maps
construct foreground template for CMB polarizationunderstand magnetic field structure of our Galaxydisentangle ISM structure of the Galaxy combined other database