Yes. They usually are quiet, but if something drop on surface, emit Roentgen, etc. But anywhere, gravitational forces will be very strong, and their magnetic f

Yes. They usually are quiet, but if something drop on surface, emit Roentgen, etc. But anywhere, gravitational forces will be very strong, and their magnetic field also very strong, so you will feel them. Experience might be something like MRT. - With all precautions, probably nothing special, but if do sudden movements, will be strange feelings, also gut may not feel comfortable.