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NICER mission maps "light echoes" for the New Hole of Black



Scientists draw a circle surrounding the star-shaped black hole in the sky, 10 times using Sun's mass, the NASA's Neutron Star Interior Composition Explorer (NICER) sells at the international space station.

NICER discovered the light black spot discovered recently by the X-ray light radiator MAXI J1820 + 070 (J1820 short), consuming material from a sample star. The X-ray waves were "light-echoes" that reflected the vortex gas around the black hole and revealed changes in the size and shape of the environment.

"NICER has given us the opportunity to measure the echoes of traces ever," said Erin Kara, University of Maryland, College Park, NASA and Goddard Space Flight Center, Greenbelt University, Maryland. Meeting of the 233 American Seattle Astronomy Association. "Previously, the echoes of the light-emitting disc were seen only in black holes supermarkets, millions of solar masses were collected and slowly undergone changes, with stellar black holes like J1820 having a much smaller mass and evolving much faster, detecting changes in human scale they are. "

A paper described by Kara's discovery appeared on Nature on 10, and is available online.

J1820 is about 10,000 light years in the Leo constellation. The star of the system was identified in the mission's ESA (European Agencies Space Agency) survey, which allowed researchers to calculate the distance. The astronomers did not know the presence of the black hole until March 11, 2018, when the All-sky X-ray image of the Japanese Aerospace Exploration Agency (MAXI) was seen at the space station. The J1820 black hole was completely unknown to X-rays in one of the brightest sky in a few days. NICER moved rapidly to catch this dramatic transition and continues the tail of the eruption fade.

"NICER was designed to investigate terribly dense and intense objects called neutron stars," said Zaven Arzoumanian, head of science at NICER Goddard and paper author. "We are very pleased to see that these horrible star shining stars are also investigating black holes."

A black hole releases gas from a nearby companion from a star, an acrylic disk in a material ring. Gravitations and magnetic forces dissolve the millions of solutions in millions of degrees, making the x-rays warm enough around the black hole. Disperts occur in the instability of the disk to allow the flooding of the gas to flow through the black hole, like a flood. Disk instability causes misunderstandings.

The crown on the disk is a region of subatomic particles about 1,000 million (1.8 million degrees Fahrenheit). Many mysteries remain the origin and evolution of the crown. Some theories suggest that the structure can be the first form of the jets of high-velocity particles in many system systems.

The astrophysicist wants to better understand the inner edge of the accretion disk and the crown above that change the size and shape of the black hole. In just over a few weeks if stars understand how and why black stars are saturated, scientists can not understand how black holes can be more than millions of years and how galaxies live.

A method used to make changes is called X-ray reverberation maps, and X-ray reflections are used in the same way, the sound uses sound waves to map the ground. Corona X-rays travel to the right direction, others turn the light off and reflect different energy and angles.

X-ray reverberation black black hole supermassive cartography has shown that the acreition disk's inner edge event is very close to the horizon, the return is not the point. The crown is also compact, but closer to the black hole than the excess disc. The observations prior to the X-ray rays of the stellar black holes, however, could be quite far from the edge of the acrection disk, hundreds of times the size of the event horizon. The J1820 star mass, however, were cousins ​​like supermassives.

When NICER examined the J1820 observations, the Kara team soon saw a slight delay in delaying the flurry of the direct echo of the direct current flare of the ultraviolet rays and traveling X-rays before shorter and shorter distances. Over 10,000 light years away, the crown was hired vertically from 100 to 10 million, and something like Blueberry's size thanks to Pluto's distance.

"This is the first time we have seen this type of evidence that this trend is reduced to that evolution's evolved phase," said Jack Steiner, an astrophysicist at the Massachusetts Institute of Technology's Astrophysics and Space Kavli Institute in Cambridge. "The choir is still quite mysterious, and we still understand what it is. But now we prove that the evolution of the system is the same as the crown."

To reduce the time time of the sample to confirm that the crown is not a disc, the researchers made a X-rays from the crown using a signal line that used the iron line K to cause fluorescence when the tap iron atoms hit. The time is slower in gravitational areas more robust and at higher speeds, according to Einstein's relativity theory. When the atoms of the black hole are bombarded by means of the crown current, the X-ray waves extend, as they observe at a slower time (in this case, NICER).

The Kara team found that the iron line K1820 was continuously maintained, which means that the inner edge of the disk was next to the black hole, similar to a black hole supermarket. Reduced time of displacement due to the internal edges of the internal internal movement, the iron K line could be further extended.

These notes provide scientists with innovations on how to create black holes and how to launch this energy process.

"NICER's observation of J1820 has revealed something about the black masses of star-shaped galaxies that can be used by analogous analogues similar to supermassive black holes and their effects," said Philip Uttley, the author of the university astrophysician. Amsterdam. "We have seen one of the four NICER's first years of events, and it's remarkable: we're on the edge of the astonishing X-ray astronomy."

NICER NASA's Explorer's Option Astrophysics mission is part of the NASA Explorer program, which offers frequent flight opportunities using global, scientific-space science researchers using innovative, efficient, and efficient heliophysics and astrophysics science. NASA's Spatial Technology Missions Directorate accepts the SEXTANT component of the mission to show pulse-based spacecraft navigation.

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