@inproceedings{oai:jaxa.repo.nii.ac.jp:00003088,
 author = {Hoang, Thiem},
 book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life},
 month = {Mar},
 note = {第4回「あかり」国際会議 (2017年10月17-20日. 東京大学), 文京区, 東京, The 4th AKARI International Conference: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life (October 17-20, 2017. The University of Tokyo), Bunkyo-ku, Tokyo, Japan, Polarized emission from polycyclic aromatic hydrocarbons (PAHs) is important for testing the basic physics of the alignment of ultrasmall grains and potentially offers a new way to trace magnetic fields. In this talk, a new model of polarized PAH emission is presented, taking into account the effect of PAH alignment with the magnetic field. The polarization level of PAH emission features, for the different phases of the ISM is discussed. We find that negatively charged smallest PAHs in the reflection nebula can be excited to slightly suprathermal rotation due to enhanced ion collisional excitation, which enhance the polarization level. The polarization level and polarization angle predicted by our new model are supported by the first detection of the polarization at 11.3 micrometers PAH feature from MWC 1080 nebula by Zhang et al. (2017). Thus, the mid-IR polarization would become a new probe for the magnetic fields from the surface layer of circumstellar disks., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730026014, レポート番号: JAXA-SP-17-009E},
 pages = {103--106},
 publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)},
 title = {Polarization of Mid-infrared Emission from Polycyclic Aromatic Hydrocarbons},
 volume = {JAXA-SP-17-009E},
 year = {2018}
}