Radio-quiet neutron star Radio-quiet neutron star A radio-quiet neutron star is a neutron star that does not seem to emit radio emissions, but is still visible to Earth through electromagnetic radiation at other parts of the spectrum, particularly x-rays and gamma rays. Most detected neutron stars are pulsars, and emit radio-frequency electromagnetic radiation. About 700 radio pulsars are listed in the Princeton catalog, and all but one emit radio waves at the 400 MHz and 1400 MHz frequencies. That exception is Geminga, which is radio quiet at frequencies above 100 MHz, but is a strong emitter of X-rays and gamma rays. In all,
Canadian Neutron Beam Centre Canadian Neutron Beam Centre The NRC Canadian Neutron Beam Centre (CNBC) is Canada's national user facility that enables researchers to use neutron beams as tools for world-class materials research. The CNBC is located at Chalk River Laboratories, where Atomic Energy of Canada Limited (AECL) owns and operates the National Research Universal (NRU) reactor. CNBC has been a global leader in the development of materials and products for businesses. Like most other neutron beam laboratories, the CNBC operates beamlines as a service to external researchers. In a typical year, about 250 individuals participate in research that relies on access to its