2021-10-31

The Hubble telescope observed the fan of the shadow of the “cosmic bat” in the Serpens nebula

By yqqlm yqqlm

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c877826a2d70611 - The Hubble telescope observed the fan of the shadow of the "cosmic bat" in the Serpens nebula

this photo shows the Serpens Nebula seen by the hawk-i instrument installed on the very large telescope of the European Southern Observatory. The filter used by hawk-i to make this image covers wavelengths similar to those used by Hubble

the Hubble Space Telescope captured amazing observations in 2018, that is, the invisible planetary disk of the newborn star. The disk casts a huge shadow in the clouds farther away from the star forming region – like a fly wandering in the beam of a flashlight shining on the wall

now, astronomers have accidentally observed the “beat” of bat shadows. This may be caused by a planet pulling the disk and twisting it. “It is known that there is a star surrounded by a disk, and the disk is not like Saturn’s ring – it is not flat but expanded. Therefore, this means that if the light from the star goes straight up, it can continue to go straight up without being blocked by anything. But if it tries to go along the plane of the disk, it will cast a shadow if it can’t get out.” The lead author Klaus pontoppidan explained that he is an astronomer at the Space Telescope Science Institute (STScI) in Baltimore, and his team has published these results

The Hubble telescope observed the fan of the shadow of the “cosmic bat” in the Serpens nebula

the discovery of the “slap” action is also a surprise. Pontoppidan and his team observed the shadow with several filters in 13 months. When they combined the old and new images, the shadow seemed to have moved

the shadow is so large, about 200 times the diameter of our solar system, that light does not pass through it in an instant. In fact, it takes 45 days for light to come out of the star to the edge of the shadow

The Hubble telescope observed the fan of the shadow of the “cosmic bat” in the Serpens nebula(1)

a planet tilted up in a disk orbits its star in no less than 180 days. They estimate that it will be about the same distance from the star as the earth and the sun. The disc must be relatively dazzling, and its angle increases with distance, like a trumpet. This shape of two peaks and two depressions can explain the “beating” of shadows. The team also speculated that a planet was embedded in the disk and inclined to the plane of the disk. According to the thickness of the chart, pontoppidan and his team doubt this situation. At present, there is no evidence of binary companion

this disk is a spiral structure composed of gas, dust and rock, because it is too small and far to be seen by even Hubble. However, according to the projected shadow, scientists know that its height to radius ratio is 1:5