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From the black hole itself? Nothing. No matter or energy can escape from a black hole.
From the accretion disk AROUND the black hole, where matter is accelerated to light speed at the event horizon? All possible frequencies of electromagnetic radiation can be emitted from the accretion disk, but the typical "signature" of a black hole is mostly hard X-rays.
What else can I help you with?
What does E in EM wave stand for?
EM waves stand for Electromagnetic waves.
What is energy traveling as EM waves used to gather images of outer space called?
The energy is called electromagnetic energy. It is the energy carried by electromagnetic waves. In principle, any frequency of EM waves can be used to gather information about objects in outer space.
What does the e stand for in EM waves?
EM waves stand for Electromagnetic waves.
Which EM waves have the longest wavelenghts?
Radio waves
Are em waves longitudinal are transverse?
EM waves are both Transverse and Longitudinal.
What type of em waves do cell phones depend on?
Cell Phones depend on The EM Radio Waves to Work. By: And
How do various kinds of em waves differ from each other?
There are two main types of EM waves. Magnetic waves and Electronic waves. They exist at orthogonal relationships with M waves and E waves at 90 degrees to each other.
What are the waves in the EM spectrum?
Radio waves are the longest lengthwise.
Do all EM waves transfer matter from place to place?
False. EM Waves do not transfer matter, they transfer energy.
What type of em waves do think thet are most useful?
whatb type of EM waves do you think that are most usefu?
Do em waves need a medium?
no
Energy transferred as EM waves?
No
