翻訳と辞書 Words near each other ・ Marker Rock ・ Marker vaccine ・ Marker Wadden ・ Marker, Norway ・ Marker-and-cell method ・ Marker-assisted selection ・ Markermeer ・ Markapuram (Assembly constituency) ・ Markaqucha ・ Markar Aghajanyan ・ Markar Melkonian ・ Markarfljót ・ Markarian ・ Markarian 177 ・ Markarian 231 ・ Markarian 421 ・ Markarian 501 ・ Markarian galaxies ・ Markarian's Chain ・ Markaryd ・ Markaryd Municipality ・ Markaryds IF ・ Markas Luckis ・ Markat ・ Markato ・ Markaughe ・ Markavatnet (Meløy) ・ Markayankottai ・ Markaz ・ Markaz (country subdivision) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Markarian 421 ： ウィキペディア英語版 Markarian 421 Markarian 421 (Mrk 421, Mkn 421) is a blazar located in the constellation Ursa Major. The object is an active galaxy and a BL Lacertae object, and is a strong source of gamma rays. It is about 397 million light-years (redshift: z=0.0308 eq. 122Mpc)〔 to 434 million light-years (133Mpc)〔 from the Earth. It is one of the closest blazars to Earth, making it one of the brightest quasars in the night sky. It is suspected to have a supermassive black hole (SMBH) at its center due to its active nature, and has a companion galaxy (Markarian 421-5) that is fueling the gas jets observed pointing away from the galaxy. It was first determined to be a very high energy gamma ray emitter in 1992 by M. Punch at the Whipple Observatory, and an extremely rapid outburst in very high energy gamma rays (15-minute rise-time) was measured in 1996 by J. Gaidos at Whipple Observatory Markarian 421 also had an outburst in 2001 and is monitored by the Whole Earth Blazar Telescope project. Due to its brightness (around 13.3 magnitude, max. 11.6mag. and min. 16mag.) the object can also be viewed by amateurs in smaller telescopes. ==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「Markarian 421」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.