Post on 02-Jan-2016
description
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