Alpha Centauri 2

Community => Recreation Commons => Our researchers have made a breakthrough! => Topic started by: gwillybj on August 22, 2015, 09:02:59 pm

Title: This Is What The Center Of Our Galaxy Looks Like
Post by: gwillybj on August 22, 2015, 09:02:59 pm

This Is What The Center Of Our Galaxy Looks Like
Astronomers take an unprecedented, x-ray view of the black hole in the center of the Milky Way.

Jacqueline Howard
Associate Science Editor, The Huffington Post
Posted: 08/22/2015 08:11 AM EDT

(http://img.huffingtonpost.com//asset/scalefit_960_noupscale/55d77b631d00006e00145889.jpeg)
The central regions of our galaxy, the Milky Way, seen in x-rays by ESA’s XMM-Newton X-ray observatory.
ESA/XMM-NEWTON/G. PONTI ET AL. 2015

This new, unprecedented image of the Milky Way shows that our galaxy's core is a pretty tumultuous place.

The compiled image of photos taken by the European Space Agency's x-ray satellite XMM-Newton (above) spans 1,000 light-years in the center of the galaxy, and shows dying stars, powerful winds, hot gas and, most notably, a supermassive black hole.

The galactic black hole, dubbed Sagittarius A*, and its surrounding emission are located in the brightest central region of the image.

Black holes don't emit light. But as the objects that surround Sagittarius A* in the Milky Way's center are pulled in by the black hole's strong gravitational grasp, the interaction emits light at various wavelengths, including x-rays.

(http://img.huffingtonpost.com//asset/scalefit_960_noupscale/55d77e661d00002f00145894.jpeg)
This magnification shows the central 100 light-years of the galaxy's violent core. Here, only soft x-ray emissions are shown.
MPE/ESA

After analyzing the image, an international team of astronomers at the Max Planck Institute for Extraterrestrial Physics has not only concluded that the center of the galaxy is a dramatic place, but that Sagittarius A*  may be partly to blame for the tumult.

The black hole is so ginormous that it has a mass a few million times that of our sun. The new image of our galaxy's center may provide important insight into how our Milky Way and its black hole are evolving.

A paper describing the new image was published online in the Monthly Notices of the Royal Astronomical Society on August 19, 2015.

http://www.huffingtonpost.com/entry/this-is-what-the-center-of-our-galaxy-looks-like_55d779ace4b04ae4970338b2 (http://www.huffingtonpost.com/entry/this-is-what-the-center-of-our-galaxy-looks-like_55d779ace4b04ae4970338b2)