Pulsars are highly magnetized, rotating Neutron_starthat emit a beam of Electromagnetic_radiation. The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name
Pulsar, since you would need some mechanical device to produce radio waves.
All objects give off thermal radiation.
All objects give off thermal energy, also known as heat, in the form of infrared radiation. Thermal energy is a result of the motion of the atoms and molecules that make up the object.
Some objects in space that give off radiation include stars, pulsars, black holes, supernovae, and active galactic nuclei. These objects emit a wide range of radiation, from visible light to X-rays and gamma-rays.
A 'ray' is a term for a radiation. All objects with temperatures above 0 degrees Kelvin give off radiation called, "Heat".
Yes, all objects with a temperature above absolute zero give off infrared radiation. The intensity and wavelength of this radiation depend on the temperature of the object.
As far as we know.
All stars and stellar remnants.
A pulsar is a special kind of neutron star, which is the ultra-dense leftover core of a massive star. Pulsars emit beams of radiation that sweep out in circles as the pulsar spins. When those beams flash over Earth, we see them as regular, repeating pulses of radio emission.
No, most objects do not give off their own light. Objects either reflect light from a light source or emit light when they are heated to a high temperature.
No, not objects that are opaque.
The only all-inclusive thing you can say about them is that they're electromagnetic. The first pulsars discovered, in the late 1960s, were detected in radio wavelengths. But many others have been discovered since then that pulse in gamma rays, visible light, and X-rays.