XMM-Newton X-ray Telescope have detected a type of ultrafast ‘wind’ in a galaxy called Markarian 817, which barely emits energy.
In the beginning, markarian black hole 817 It attracted the attention of scientists for about a year due to the low amount of light emitted (active galactic centers emit high-energy light, including X-rays).
“The X-ray signal was so weak that I was convinced I was doing something wrong,” explains researcher Miranda Jack (University of Michigan), who observed the galaxy from NASA’s Swift Observatory.
“You would expect very strong winds if the fan was turned on at maximum power,” says Miranda Zak. For the galaxy we studied, called Markarian 817, the fan was turned on at low power, but incredible Naturally energetic winds were still being generated.”
“It is very rare to observe ultrafast winds, and even less common to detect winds that have enough energy to change the character of their host galaxy.”
“Markerion 817 produced these winds for about a year, even though it was not in a particularly active state,” says Elias Kammon of Roma Tre University (Italy), “This suggests that the black hole is much younger than its host galaxies in the past.” “Can give a much new shape.”
What creates the winds in the Markarian 817 galaxy?
Follow-up observations with the XMM-Newton telescope revealed what was happening: ultrafast winds from the accretion disk were blocking X-rays sent from the black hole’s surroundings (corona).
These measurements were supported by observations made with NASA’s NuSTAR telescope.
Detailed analysis of the X-ray measurements revealed that, far from emitting a single “puff” of gas, The center of Markarian 817 generated intense storms across a wide area of the accretion disk, The wind lasted for several hundred days and was composed of at least three separate components, each moving at several percentage points of the speed of light.