An Imaging Algorithm Using the Bispectrum in Radio Interferometry

Publications of the Astronomical Society of Japan

Katagiri, Seiji¹  Kawaguchi, Noriyuki³  Morita, Koh-Ichiro⁴  Hayakawa, Masashi² 

[1] Graduate School of Electro-Communications, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182;University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182;National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181;Nobeyama Radio Observatory, Minamimaki-mura, Minamisaku, Nagano 384-13

关键词: Bispectrum;    "Data analysis";    "Image processing";    Interferometry;    MEM;   

DOI  :  10.1093/pasj/49.1.123

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Wepresentamaximum-entropyimagingalgorithmusingthebispectrumobservedwithradiointerferometers.Itisiterativeandbasedonthesteepest-ascentmethod.Imagingsimulationtestsshowthatthisalgorithmcanreconstructmorereliableimagesofweak,extendedsourcesthancantheconventionalself-calibrationmethod.AnexampleapplicationofthisalgorithmtodataoftheNobeyamaMillimeterArrayisgiven.

【 授权许可】

Unknown