NASA acknowledged that they could not fully explain the cause of the phenomenon or the consequences of its existence. Researchers have suggested several theories about the appearance of the green spot, one being that it could be a black hole consuming another object. NASA explained, "If an object gets too close to a black hole, gravity can pull that object by moving debris into a close orbit around the black hole.
"The material from the inner edge of this newly formed disk begins to move so rapidly that it is heated to millions of degrees and emits X-rays. "
Hannah Earnshaw, a Caltech doctoral researcher, said in a statement," Ten days is really a short time for such a bright object to appear. "
" Usually, with NuSTAR, we observe more gradual changes in time and do not often observe the source repeatedly in rapid succession.
"In this case, we were lucky to get a source that is changing extremely fast, which is very exciting."
The distant galaxy that caught the Chandra X-ray Observatory (1945A014). Image: NASA / JPL-Caltech)
Chandra X-ray Observatory, NASA also witnessed the emergence and disappearance of the green blob, known as ultraluminozen X-ray source (ULX), confirming the observation.
The usual explanation for these ultraluminous X-rays. sources (UXL) are supernumerary, but they usually last for a long period of time and do not flicker and shrink as those seen by NASA detectors.
Normal, prolonged ULX are a common occurrence in space, NASA explains how they are "Typically Long-lived."
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this, in this ULX there was "visible light detected by an X-ray source," which probably excludes it being supernova.
One speculation is that this recurring color event may be a neutron star.
The neutron stars , which are about the same mass as the Sun, can draw on material when creating and disks of debris that can generate ULX sources.
But this is not a satisfactory answer, since if a neutron star rotates too fast, the magnetic fields it creates can actually cause a barrier that would interfere material to reach the surface of the star.
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Added by Mrs. Earnshaw: "It would be like trying to jump on a carousel that revolves at thousands of miles per hour."
The New York Post explained that the barrier effect would prevent the star from be a source of X-rays.  However, the barrier may "pass away briefly," which would allow the material to collapse and land on the surface of a neutron star, which could explain the sudden vibration of color, the researchers said.
Speaking to the New York Post, Earnshaw said, "This result is a step towards understanding some of the rarer and more extreme cases in which matting r is accredited to black holes or neutron stars. "
The NuSTAR X-ray Observatory also examined the Fireworks Galaxy (NGC 6946) and saw numerous patches of blue and green light that appeared and disappeared within weeks.
phenomenon appears in a new study published in the Astrophysical Journal.
Supermassive Black holes are said to exist at the center of the galaxies
X-ray Observatory at ChandraA also witnesses the emergence and disappearance of the green spot known as the Ultraluminous X-ray Source (ULX)
The black holes weigh over 130 sun masses.
But, the backslide evasive implosion of such heavy star nuclei cannot be stopped; instead, they continue to collapse and form black holes where even light cannot escape from gravitational forces.