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Hum Raaz
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Tycho's Supernova Remnant: Chandra Movie Captures Expanding Debris From a Stellar Explosion

When the star that created this supernova remnant exploded in 1572, it was so bright that it was visible during the day. And though he wasn't the first or only person to observe this stellar spectacle, the Danish astronomer Tycho Brahe wrote a book about his extensive observations of the event, gaining the honor of it being named after him.

In modern times, astronomers have observed the debris field from this explosion - what is now known as Tycho's supernova remnant - using data from NASA's Chandra X-ray Observatory, the NSF's Karl G. Jansky Very Large Array (VLA) and many other telescopes. Today, they know that the Tycho remnant was created by the explosion of a white dwarf star, making it part of the so-called Type Ia class of supernovas used to track the expansion of the Universe.

Since much of the material being flung out from the shattered star has been heated by shock waves - similar to sonic booms from supersonic planes - passing through it, the remnant glows strongly in X-ray light. Astronomers have now used Chandra observations from 2000 through 2015 to create the longest movie of the Tycho remnant's X-ray evolution over time, using five different images. This shows the expansion from the explosion is still continuing about 450 years later, as seen from Earth's vantage point roughly 10,000 light years away.

By combining the X-ray data with some 30 years of observations in radio waves with the VLA, astronomers have also produced a movie, using three different images. Astronomers have used these X-ray and radio data to learn new things about this supernova and its remnant.

Read the full story and watch the video>>
http://chandra.harvard.edu/photo/2016/tycho/

► A paper describing these results has been accepted for publication in The Astrophysical Journal Letters and is available online.>>
http://arxiv.org/abs/1604.01779

Image credits: X-ray: NASA/CXC/GSFC/B. Williams et al; Optical: DSS; Radio: NSF/NRAO/VLA
► Image Source>> http://www.nasa.gov/mission_pages/chandra/chandra-movie-captures-expanding-debris-from-a-stellar-explosion.html

#astrophysics, #TychosSupernovaRemnant, #Chandra, #research, #Universe
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Respira a ação e acalma o gesto. Às vezes, o passo lento denuncia a vontade de ficar estático. O olhar ainda em movimento pode contemplar em frente, atrás, dos lados. Os ângulos nunca permanecerão parados. Respira a ação e acalma o peito. Mesmo para o que parece não ter solução, existe um jeito.

Respiração.

Marla de Queiroz
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Hum Raaz......
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