Friday , August 12 2022

"Extreme Relic" – Combining Black Holes Lighted by Thousand Millions Times


Posted on February 21, 2019

M51 Galaxy

In the nearby Whirlpool galaxy and companion galaxy, M51b, there are two top black holes heated up and pushing ambient material. Both animals should have the most eye-catching X-ray sources, but a new study using NASA NASA (Nuclear Spectroscopic Telescope) observations shows that a much smaller object competes with & # 39 the two peaks.

The most stunning features of galaxy Whirlpool – officially known as M51a – are both long and star "arms" rotation around the galactic center as ribbons. The much smaller M51b clears as a barn to the Whirlpool edge. Commonly known as M51, both galaxies merge.

In the midst of each galaxy millions of black hole times are more magnificent than the Sun. The galactic immunization should push huge quantities of gas and dust to those black holes and to orbit of their surroundings. In turn, the intense gravity of the black holes should cause the material to be heated and frozen, creating sparkling discs around each that can result in all stars in their galaxies.

"Out of Nowhere" "Star All or Star Neutron Powering New Mystery Penhenena

But the black hole does not radiate so bright in the X-ray as scientists expect during a merger. Based on earlier observations of satellites that detect low-energy X-rays, such as Chandra NASA X-ray Observatory, scientists believed that layers of gas and dust around the black hole in the larger galaxy impeded additional emissions. But the new study, published in the Astrophysical Journal, used the NuSTAR high-energy X-ray vision for peers below those layers and found that the black hole was still less than expected.

"I'm still surprised by this perception," said lead study Murray Brightman, researcher at Caltech in Pasadena, California. "Galactic combinations are supposed to produce blackhole growth, and that evidence would be a strong emission of high-energy X-rays, but we do not see that here."

Brightman of the opinion is the most likely explanation that black holes "flash" during galactic combinations as opposed to more or less constant brightness radio throughout the process.

"The brilliant assumption is a new idea in the field," said Daniel Stern, a research scientist at the NASA Jet Propulsion Laboratory at Pasadena and the project scientist for NuSTAR. "We thought that the black hole variation took place at millions of years timescales, but now we think that those timescales could be much shorter. Imagine how short it is a field of active study."

Together with the two black holes that deteriorate less than predicted scientists in M51a and M51b, the first also hosts an object that is millions of times less than & # 39; the black hole again, but she sparkles with equal density. The two phenomena are not connected, but they create a surprising X-ray landscape in M51.

The small X-ray source is a neutron star, an incredible shortage of abandoned materials after a massive star exploding star at the end of its life. A typical neutral star is hundreds of thousands of times less diameter than the Sun – only as large as a large city – yet one to twice the mass. A teaspoon of neutral star material would weigh more than a billion tonnes.

Despite their size, neutron stars often make themselves known through intense light emissions. The neutron star found in M51 is even brighter than average and belongs to a recently discovered class known as ultra-oily neutrons. Brightman said that some scientists have suggested that strong magnetic fields produced by the neutron star may be responsible for the luminous emissions; Brightman's previous paper and colleagues about this neutron star support that theory. Some of the bright, X-ray sources of energy that can be seen in these two galaxies may also be neutron stars.

The Galaxy Daily via NASA / JPL

Source link