3C 454.3 - blazar (a type of quasar whose jet is directed toward the Earth) located far from the plane of the Galaxy . It is one of the brightest sources of gamma radiation in the sky [2] and the object with the highest luminosity ever observed: the absolute magnitude at the maximum brightness is -31.4 [3] . The strongest flash of this blazar in the gamma range doubled in brightness the pulsar in Sails , located in the Milky Way . Blazar also experiences flashes in the optical and radio ranges: in red rays, blazar increases brightness by more than 2.5 times, reaching a visible magnitude of 13.7. [four]
| 3C 454.3 | |
|---|---|
 Gamma ray image from the Fermi-LAT Observatory | |
| Observational data ( Age J2000.0 ) | |
| Constellation | Pegasus |
| Right ascension | 22 h 53 m 57.7 s [1] |
| Declination | + 16 ° 08 ′ 53.6 ″ [1] |
| Redshift | 0.859001 ± 0.000170 [1] |
| Distance | 7.7 billion St. years (2.4 billion pc ) |
| Type of | Blazar / quasar |
3C 454.3 is located in the constellation Pegasus next to the star Alpha Pegasus . Periodically experiences flashes, the most powerful of which occurred in June 2014 and had an apparent magnitude of 13.4. [5] [6]
Content
Research History
In July and August 2007 there was a strong flash in the gamma range, two years after a record flash in the optical range. Joint observations were carried out by the Spitzer Space Telescope and the Chandra X-ray Observatory , and this blazar was also observed by Swift , RXTE , AGILE .
A group of researchers of active galactic nuclei working in the framework of the GLAST project initiated the study of blazar 3C 454.3 (2251 + 158) in various spectral ranges in July and August 2007.
Images
Notes
- ↑ 1 2 3 SIMBAD entry for 3C 454.3 . Date of treatment June 25, 2014.
- ↑ Top Ten Gamma Ray Sources From the Fermi Telescope . Universe Today . Date of treatment June 25, 2014.
- ↑ The most luminous quasar state ever observed (inaccessible link) . Calar Alto Observatory. Date of treatment January 5, 2015. Archived on April 7, 2015.
- ↑ NASA - Fermi Sees Brightest-Ever Blazar Flare NASA Date of treatment May 31, 2015.
- ↑ Observing Alert: Distant Blazar 3C 454.3 in Outburst, Visible in Amateur Telescopes . Universe Today . Date of treatment June 25, 2014.
- ↑ Light Curve Generator for 3C 454.3 . American Association of Variable Star Observers. Date of treatment July 16, 2014.