NASA's Chandra revolves up Black Hole Bonanza in Galaxy

Using data from NASA's Chandra X-ray lookout, astronomers have exposed an extraordinary bonanza of black holes in the Andromeda Galaxy, one of the adjoining galaxies to the Milky Way.

Using more than 150 Chandra explanations spread over 13 years, researcher’s recognized 26 black hole entrants, and the main number to date, in a galaxy exterior our own. Many think Andromeda to be a sister galaxy to the Milky Way. The two eventually will collide, more than a few billion years from currently.

The black hole applicants go to the astral mass class, meaning they twisted in the death throes of very huge stars and classically have lots of five to 10 times that of our sun. Astronomers can notice these otherwise unseen objects as cloth is dragged from a companion star and animated up to make emission before it evaporates into the black hole.

This new work verifies forecasts complete past in the Chandra mission about the properties of X-ray basis near the hub of M31. Earlier research by Rasmus Voss and Marat Gilfanov of the Max Planck Institute for Astrophysics in Garching, Germany, used Chandra to explain there were a curiously large number of X-ray sources near the hub of M31. They forecast most of these added X-ray basis would have black holes that had meet and detained low mass stars. This new finding of seven black hole candidates close to the hub of M31 gives burly hold to these maintains.

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Remnant of an Explosion With a Powerful Kick?

Vital clues about the devastating ends to the lives of massive stars can be found by studying the aftermath of their explosions. In its more than twelve years of science operations, NASA's Chandra X-ray Observatory has studied many of these supernova remnants sprinkled across the Galaxy. The latest example of this important investigation is Chandra's new image of the supernova remnant known as G350.1+0.3. This stellar debris field is located some 14,700 light years from the Earth toward the center of the Milky Way.

Evidence from Chandra and from ESA's XMM-Newton telescope suggest that a compact object within G350.1+0.3 may be the dense core of the star that exploded. The position of this likely neutron star, seen by the arrow pointing to "neutron star" in the inset image, is well away from the center of the X-ray emission. If the supernova explosion occurred near the center of the X-ray emission then the neutron star must have received a powerful kick in the supernova explosion.

Data from Chandra and other telescopes suggest this supernova remnant, as it appears in the image, is between 600 and 1,200 years old. If the estimated location of the explosion is correct, this means that the neutron star has been moving at a speed of at least 3 million miles per hour since the explosion This is comparable to the exceptionally high speed derived for the neutron star in Puppis A, another neutron star moving at a blistering pace within a supernova remnant. The G350+1+0.3 data provide new evidence that extremely powerful "kicks" may be imparted to neutron stars left behind once the supernova has exploded.