標題: Newest image of black hole M87* reveals swirling magnetic field [打印本頁] 作者: jira13578 時間: 2021-8-22 12:37 標題: Newest image of black hole M87* reveals swirling magnetic field
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In 2019, a photograph of the black hole M87*, 55 million light-years from us, became the world's first photograph of a black hole. But the results of the subsequent analysis revealed that There is also clearly polarized light emanating from the black hole. This indicates that there is an extremely powerful magnetic field surrounding the black hole.
Polarized light is a wave of light that twists or spins causing electrons to vibrate in one direction. This reduces the glare of natural light caused by electrons oscillating in different directions. This is the same principle as polarized sunglasses.
Countless stacked ring-shaped beams of light have been found surrounding the black hole.
A photo of a black hole exploding high-energy jets
Astronomers reveal the world's first image of a black hole from a distant galaxy.
An international team of astronomers at EHT states in a research paper published in The Astrophysical Journal Letters that the magnetic field around the event horizon of black hole M87* is responsible for the polarization of light. This magnetic field has a strength between 1-30 gauss (Gauss), or 50 times the Earth's strongest magnetic field.
This photograph is evidence of the role of the magnetic field. To make a black hole explode into a jet of high-energy particles. In the past, scientists had not tried to understand the phenomenon very well.
This image of galaxy M87 from the VLT telescope shows a high-energy jet of a black hole ejecting to the right.
In the case of the M87* black hole, the team found that the surrounding magnetic field was strong enough to withstand its own enormous gravity. It can push the hot gas or plasma portion of the accretion disk further and not fall into the black hole.
The magnetic field also acts as an accelerator for particles that do not fall into the black hole to increase their energy. Until a plasma beam explodes at 99% of the speed of light that soars through the galaxy.
Dr Sara Issaoon, one of EHT's team of astronomers, added: “This image of polarized light is seen as a curve that revolves around a black hole. This indicates that the magnetic fields around the black hole are in order. which is an important feature that Let it explode into a jet.”作者: martina28043 時間: 2021-8-22 23:44
