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GLEAM-X J162759.5−523504.3
GLEAM-X J162759.5-523504.3 is a transient astronomical radio source, found in 2020, in archival data recorded in 2018 by the Murchison Widefield Array. The source was active in radio for about 1 minute every 18 minutes, from January to March 2018, but has not been recorded since. Nature of source It seems somewhat like a Astronomical radio source#The Galactic Center, Galactic Center radio transient (GCRT) except it is thought to be only about distant. The radio emissions were Polarization (waves), polarised (as if affected by a magnetic field) so it may be a predicted astrophysical object called an "ultra-long period magnetar". See also * GPM J1839−10 * GCRT J1745−3009 * PSR J0901–4046 * Rotating radio transient, Rotating radio transients (RRATs) Further reading * Not open access. * * * * References External links * {{DEFAULTSORT:GLEAM-X J162759.5-523504.3 Radio astronomy Sagittarius (constellation) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J2000
In astronomy, an epoch or reference epoch is a instant, moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a Astronomical object, celestial body, as they are subject to Perturbation (astronomy), perturbations and vary with time. These time-varying astronomical quantities might include, for example, the mean longitude or mean anomaly of a body, the node of its orbit relative to a reference plane, the direction of the apogee or Perihelion and aphelion, aphelion of its orbit, or the size of the major axis of its orbit. The main use of astronomical quantities specified in this way is to calculate other relevant parameters of motion, in order to predict future positions and velocities. The applied tools of the disciplines of celestial mechanics or its subfield orbital mechanics (for predicting orbital paths and positions for bodies in motion under the gravitational effects of other bodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |