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Astrophysical masers. Some late-type stars can produce astrophysical masers from their atmospheres and beam out coherent bursts of microwaves.. The Sun. The Sun, the nearest star to Earth, is known to emit radio waves, though it is virtually the only regular star that has been detected in the radio spectrum, because it is so close.
The particle usually comes from the radioactive decay of an atom of a radioisotope, an isotope of an element which is radioactive. The electron then returns to its ground energy level by emitting the extra energy as a photon of light. A chemical that releases light of a particular color when struck by ionizing radiation is called a phosphor ...
The existence of thermal transient events from neutron star mergers was first introduced by Li & Paczyński in 1998. [1] The radioactive glow arising from the merger ejecta was originally called mini-supernova, as it is 1 ⁄ 10 to 1 ⁄ 100 the brightness of a typical supernova, the self-detonation of a massive star. [6]
It is defined as the apparent magnitude the star would show if it were located at a distance of 10 parsecs, or 32.6 light-years. accretion disk A roughly circular mass of diffuse material in orbit around a central object, such as a star or black hole. The material is acquired from a source external to the central object, and friction causes it ...
Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule , with the line strength indicating the abundance of that element.
Przybylski's Star (pronounced / p ʃ ɪ ˈ b ɪ l s k iː z / or / ʃ ɪ ˈ b ɪ l s k iː z /), or HD 101065, is a rapidly oscillating Ap star at roughly 356 light-years (109 parsecs) from the Sun in the southern constellation of Centaurus.
The intense radiation of most observed GRBs is thought to be released during a supernova or superluminous supernova as a high-mass star implodes to form a neutron star or a black hole. From gravitational wave observations, short-duration (sGRB) events describe a subclass of GRB signals that are now known to originate from the cataclysmic merger ...
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay.