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David Norman Schramm (October 25, 1945 – December 19, 1997) was an American astrophysicist and educator, and one of the world's foremost experts on the Big Bang theory. Schramm was a pioneer in the study of Big Bang nucleosynthesis and its use as a probe of dark matter (both baryonic and non-baryonic) and of neutrinos. He also made important contributions to the study of cosmic rays, supernova explosions, and heavy-element nucleosynthesis. == Biography == David Schramm was born in St. Louis, Missouri and earned his master's degree in physics from the Massachusetts Institute of Technology in 1967, where he was also a member of the Delta Upsilon fraternity and the wrestling squad.〔 He earned a Ph.D in physics at Caltech in 1971 under Willy Fowler. After a brief time as faculty at the University of Texas at Austin he accepted a professorship at the University of Chicago, where he spent the rest of his career. Schramm received the Robert J. Trumpler Award of the Astronomical Society of the Pacific in 1974, the Helen B. Warner Prize for Astronomy from the American Astronomical Society in 1978, and he was awarded the Julius Edgar Lilienfeld Prize from the American Physical Society in 1993. Schramm, an avid private pilot, died on 19 December 1997, when his Swearingen-Fairchild SA-226 crashed near Denver, Colorado.〔(【引用サイトリンク】title= David N. Schramm, 1945-1997 )〕 He was the sole occupant of the aircraft. The National Transportation Safety Board found the cause to be pilot error. At the time of his death he was Vice President for Research and Louis Block Distinguished Service Professor in the Physical Sciences at the University of Chicago. 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「David Schramm (astrophysicist)」の詳細全文を読む スポンサード リンク
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