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X-ray Echoes from Circinus X-1

X-ray Echoes from Circinus X-1

Originally shared by Astronomy Picture of the Day (APoD)


X-ray Echoes from Circinus X-1

Image Credit: X-ray – NASA/CXC/Univ. Wisconsin-Madison/S.Heinz et al, Optical – DSS

http://apod.nasa.gov/apod/ap150805.html

Circinus X-1 is an X-ray binary star known for its erratic variability. In the bizarre Circinus X-1 system, a dense neutron star, the collapsed remnant of a supernova explosion, orbits with a more ordinary stellar companion. Observations of the X-ray binary in months following an intense X-ray flare from the source in 2013 progressively revealed striking concentric rings – bright X-ray light echoes from four intervening clouds of interstellar dust. In this X-ray/optical composite, the swaths of Chandra Observatory X-ray image data showing partial outlines of the rings are in false colors. Remarkably, timing the X-ray echoes, along with known distances to the interstellar dust clouds, determines the formerly highly uncertain distance to Circinus X-1 itself to be 30,700 light-years.

0 comentarii la „X-ray Echoes from Circinus X-1

  1. Astronomy Picture of the Day (APoD)

    X-ray Echoes from Circinus X-1

    Image Credit: X-ray – +NASA/CXC/Univ. Wisconsin-Madison/S.Heinz et al, Optical – DSS

    Celebration!!

  2. Magnificent. Shot

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