Rambler's Top100Astronet    
  по текстам   по ключевым словам   в глоссарии   по сайтам   перевод   по каталогу
 

Supernova 1994D and the Unexpected Universe
<< Yesterday 31.05.2015 Tomorrow >>
Supernova 1994D and the Unexpected Universe
Credit & Copyright: High-Z Supernova Search Team, HST, NASA
Explanation: Long ago, far away, a star exploded. Supernova 1994D, visible as the bright spot on the lower left, occurred in the outskirts of disk galaxy NGC 4526. Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae. In fact, the light emitted during the weeks after its explosion caused it to be given the familiar designation of a Type Ia supernova. If all Type 1a supernovae have the same intrinsic brightness, then the dimmer a supernova appears, the farther away it must be. By calibrating a precise brightness-distance relation, astronomers are able to estimate not only the expansion rate of the universe (parameterized by the Hubble Constant), but also the geometry of the universe we live in (parameterized by Omega and Lambda). The large number and great distances to supernovae measured over the past few years, when combined with other observations, are interpreted as indicating that we live in a previously unexpected universe.

<<  Май  >>
Пн Вт Ср Чт Пт Сб Вс
        1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
1995   1996   1997   1998
1999   2000   2001   2002
2003   2004   2005   2006
2007   2008   2009   2010
2011   2012   2013   2014
2015   2016   2017   2018
2019  
Январь
Февраль
Март
Апрель
Май
Июнь
Июль
Август
Сентябрь
Октябрь
Ноябрь
Декабрь
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Русский текст
Based on Astronomy Picture Of the Day
Публикации с ключевыми словами: supernova - cosmology - Сверхновые - Космология
Публикации со словами: supernova - cosmology - Сверхновые - Космология
См. также:
Все публикации на ту же тему >>

Мнения читателей [3]
Оценка: 3.0 [голосов: 30]
 
О рейтинге
Версия для печати Распечатать

Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам

Комментарии, вопросы? Пишите: info@astronet.ru или сюда

Rambler's Top100 Яндекс цитирования