All objects in the universe give off radio waves or pulsars?
Anything that is not at exactly 0 K (absolute zero temperature) gives off radiation over the entire spectrum. (Planck) The peak wavelength gets shorter with increasing temperature (Wein). Our Sun (5770 K) has its peak in visible light — but it still emits at all wavelengths. The flux (energy emitted per square metre) varies as the 4th power of the temperature. In addition, some objects will emit radiation at some wavelengths for reasons that have nothing to do with their temperature (e.g., a spinning neutron star with a strong magnetic field; a giant cloud of water being excited into a maser — the microwave equivalent of a laser). Whether the radio portion of this radiation is detectable is, of course, a different question. When Jocelyn Bell (discoverer of pulsars) gave a presentation on the 40th anniversary of the discovery, she distributed little strips of paper to everyone.
Most objects in the universe, even free floating molecules in interstellar clouds emit some radio radiation. Pulsars are neutron stars created by stars exploding as core collapse supernovae, and when formed they have intense magnetic fields and very rapid rotation rates. That is why they are very strong sources of radio waves, electrons accelerated in their magnetic fields emit all kinds of electromagnetic energy, not just radio waves.
Radio wave is a form of energy and it is in the electro magnetic spectrum of the light emission we receive from the various celestial bodies including the stars,nebulas, pulsars etc. The radio wave band of light emission confirms the source point state of existence and in cannot be the same everywhere and with every object we see, since the 90 percent of the Universe is occupied with inactive, dense dark matter!
