First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9

Details First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9 First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.435....7c&link_type=abstract

WORKSHOP ON ISO POLARISATION OBSERVATIONS. Eds. R.J. Laureijs & R. Siebenmorgen. ESA-SP 435, p. 7

Astronomy and Astrophysics

Astronomy

4

Iso, Infrared Astronomy, Polarimetry, Magnetic Fields

Scientific paper

ISO was used to perform far-infrared polarimetry of the thermal dust emission from the filamentary dark cloud GF9 using the PHT instrument and C160 filter. Embedded magnetic fields within the GF9 cloud were sought using linear polarization probes of a dense core region, a diffuse filamentary region, and two reference regions. The observations utilized the ISOPHOT C200 2 times 2 pixel camera and took the form of small, overlapping raster maps with each central sky position being viewed by each of the camera pixels. The magnetic fields contained within this dark cloud were directly detected - the first such detections using space-based techniques. Polarized dust emission was detected from the dense core, the filament, and one reference region. The average degree of polarization found was about 5%. The polarization properties of the two regions within the GF9 cloud are completely different, however. The star-forming dense core (containing the Class 0 source IRAS PSC 20503+6006) shows exceedingly parallel polarization vectors, revealing a highly uniform embedded magnetic field. The non-star forming filament shows very disordered magnetic field directions, possibly indicating that magnetic turbulence may be important in supporting some dense cores against collapse.

Affiliated with

Also associated with

No associations

Rating

First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First Detection of Magnetic Fields in a Dark Cloud from Space: ISO Far-Infrared Polarimetry Observations of GF9 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1725911