Researchers are now thinking it was the former, as evidence of yet another black hole has been found in a globular cluster by an MSU-led team of researchers.
This an image of globular cluster M62 captured by a radio telescope. The star-like object within the orange circle is believed to be a black hole discovered by a team of researchers led by an MSU astronomer. Photo courtesy of the National Radio Astronomy Observatory.
As published in the recent issue of Astrophysical Journal, a new black hole candidate has been found in a globular cluster known as M62.
“This implies that the discovery of the other black hole, in the globular cluster called M22, was not just a fluke,” said Laura Chomiuk, team member and MSU assistant professor of physics and astronomy. “Black holes really may be common in globular clusters.”
Black holes are stars that have died, collapsed into themselves and now have such a strong gravitational field that not even light can escape from them.
The globular cluster M62 is located in the constellation Ophiuchus, about 22,000 light years from Earth.
Until recently, astronomers had assumed that the black holes did not occur in globular clusters, which are some of the oldest and densest collections of stars in the universe. Stars are packed together a million times more closely than in the neighborhood of our sun.
There are so many stars in such a condensed area that they often interact with one another. Massive black holes would have the most violent encounters, “sling-shotting” each other out of the cluster.
Last year’s discovery of a pair of black holes in a cluster was especially surprising, Chomiuk said. It had been thought that if two black holes dwelled at the center, they would regularly encounter one another until one shoved the other out.
“I think it’s safe to say that we have discovered a whole new hunting ground for black holes,” said Chomiuk.
This latest discovery was made by using the National Science Foundation’s Karl G. Jansky Very Large Array telescope in New Mexico.
To view the paper, visit http://iopscience.iop.org/0004-637X/777/1/69/article.
Tom Oswald | EurekAlert!
Hope to discover sure signs of life on Mars? New research says look for the element vanadium
22.09.2017 | University of Kansas
22.09.2017 | Forschungszentrum MATHEON ECMath
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
22.09.2017 | Life Sciences
22.09.2017 | Medical Engineering
22.09.2017 | Physics and Astronomy