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Detection of the Gravitational Lens Magnifying a Type Ia Supernova
  • 작성자 : KASI
  • 작성일 : 2014-04-25
  • 조회수 : 3554
  • 저자Robert M. Quimby, Masamune Oguri, Anupreeta More, Surhud More, Takashi J. Moriya, Marcus C. Werner, Masayuki Tanaka, Gaston Folatelli, Melina C. Bersten, Keiichi Maeda, Ken’ichi Nomoto
  • Absractobjects of known brightness, like type Ia supernovae (SNIa), can be used to measure distances. If a massive object warps spacetime to form multiple images of a background SNIa, a direct test of cosmic expansion is also possible. However, these lensing events must first be distinguished from other rare phenomena. Recently, a supernova was found to shine much brighter than normal for its distance, which resulted in a debate: Was it a new type of superluminous supernova or a normal SNIa magnified by a hidden gravitational lens? Here, we report that a spectrum obtained after the supernova faded away shows the presence of a foreground galaxy—the first found to strongly magnify a SNIa. We discuss how more lensed SNIa can be found than previously predicted.






  • 게재정보SCIENCE(2014.4.24)에 실린 천문우주분야 연구논문을 게시함
  • 첨부파일
  • 원 문http://www.sciencemag.org/content/344/6182/396.full#aff-1
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