翻訳と辞書
Words near each other
・ Sjunnen
・ Sjuntorp
・ Sjur
・ Sjur Aasmundsen Sexe
・ Sjur Brækhus
・ Sjur Bygd
・ Sjur Hansen Halkjeldsvik
・ Sjur Helgeland
・ Sjur Hopperstad
・ Sjur Jarle Hauge
・ Sjur Johnsen
・ Sjur Lindebrække
・ Sjur Loen
・ Sjur Miljeteig
・ Sjur Olsnes
Sjur Refsdal
・ Sjur Røthe
・ Sjur Torgersen
・ Sjursnes
・ Sjursøya
・ Sjursøya train accident
・ SJUSD
・ Sjusjøen
・ Sjuøyane
・ SJW
・ SJW Corp
・ Sjáumst með Silvíu Nótt
・ Själagårdsgatan
・ Själevads IK
・ Självklart, Sune


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Sjur Refsdal : ウィキペディア英語版
Sjur Refsdal

Sjur Refsdal (30 December 1935 – 29 January 2009) was a Norwegian astrophysicist, born in Oslo. He is best known for his pioneer work on gravitational lensing, including the Chang-Refsdal lens.
In 1970 he earned a dr. philos. at the Institute of Theoretical Astrophysics, University of Oslo.
Later that year he became professor in astrophysics at the Hamburg Observatory〔(Obituary ), Hamburg Observatory〕 in Germany, and remained in that position until he retired in 2001.
In 1964 and 1966 he published a series of articles on the effects and possible applications of gravitational lenses.〔(P. Schneider, J. Ehlers, E.E. Falco, Gravitational Lenses ), Springer-Verlag, Berlin 1999. Chapter ''The period 1963-1979'' at Google Books〕 He is particularly known for the "Refsdal Method", which describes how one may estimate the expansion rate of the Universe (Hubble constant) using the measured time-delay and lens properties of a gravitationally lensed quasar (QSO). He later started work on stellar evolution, but returned to gravitational lensing shortly before the first detection of a gravitational lens, dubbed the Twin Quasar.
He was a member of the Norwegian Academy of Science and Emeritus at the Institute for theoretical Astrophysics at the University of Oslo.〔(Obituary ), Institutt for Teoretisk Astrofysikk, 2. February 2009〕 On 1 February 2005 he was awarded the King's Medal of Merit in gold.

The first detected multiply-lensed supernova was nicknamed "SN Refsdal" in his honor.〔(Kelly et al., "Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens", arXiv:1411.6009 ).〕
== References ==





抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Sjur Refsdal」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.