Loading

  • 21 Aug, 2019

  • By, Wikipedia

GRB 190114C
GRB 190114C was an extreme gamma-ray burst explosion from a galaxy 4.5 billion light years away (z=0.4245; magnitude=15.60est) near the Fornax constellation, that was initially detected in January 2019. The afterglow light emitted soon after the burst was found to be tera-electron volt radiation from inverse Compton emission, identified for the first time. According to the astronomers, "We observed a huge range of frequencies in the electromagnetic radiation afterglow of GRB 190114C. It is the most extensive to date for a gamma-ray burst." Also, according to other astronomers, "light detected from the object had the highest energy ever observed for a GRB: 1 Tera electron volt (TeV)—about one trillion times as much energy per photon as visible light"; another source stated, "the brightest light ever seen from Earth [to date]."

Significance

Recent publications following the event indicate that inverse Compton scattering is the mechanism responsible for producing TeV photons. X-ray photons are scattered off of the GRB's polar jets of electrons, which move at 0.9999c. In a scattering event, much of the energy of a relativistic electron is transferred to a photon. Researchers "have been trying to observe such very high energy emission from GRB's for a long time, so this detection is considered a milestone in high-energy astrophysics". The most recent studies propose, in summary, a model of binary system of hypernova (BdHN I) with two neutron stars, where one of them collapses in a black hole, surrounded by an accretion disk and from whose poles the GRB is launched.

See also

References

  1. ^ Staff (2019). "SIMBAD - GRB 190114C". SIMBAD. Retrieved 20 November 2019.
  2. ^ Staff (2019). "GRB 190114C". University of Chicago. Retrieved 24 November 2019.
  3. ^ Palmer, David (14 January 2019). "GRB 190114C: Swift detection of a very bright burst with a bright optical counterpart". Goddard Space Flight Center. Retrieved 20 November 2019.
  4. ^ ESA/Hubble Information Centre (20 November 2019). "Hubble studies gamma-ray burst with the highest energy ever seen". EurekAlert!. Retrieved 20 November 2019.
  5. ^ Byrd, Deborah (24 November 2019). "Epic cosmic explosion detected via faster-than-light particles - Space-based observatories detected a violent explosion in a galaxy billions of light-years away. It became the brightest source of high-energy cosmic gamma rays seen so far. Specialized Earth-based telescopes detected it via faster-than-light particles cascading through Earth's atmosphere". Earth & Sky. Retrieved 24 November 2019.
  6. ^ Zhang, Ben (20 November 2019). "Extreme emission seen from γ-ray bursts - Cosmic explosions called γ-ray bursts are the most energetic bursting events in the Universe. Observations of extremely high-energy emission from two γ-ray bursts provide a new way to study these gigantic explosions". Nature. 575 (7783): 448–449. arXiv:1911.09862. doi:10.1038/d41586-019-03503-6. PMID 31748718.
  7. ^ Mirzoyan, Razmik (15 January 2019). "First time detection of a GRB at sub-TeV energies; MAGIC detects the GRB 190114C". The Astronomer's Telegram. Retrieved 20 November 2019.
  8. ^ University of Johannesburg (22 November 2019). "Caught in afterglow: 1st detection of Inverse Compton emission from dying gamma-ray burst". EurekAlert!. Retrieved 23 November 2019.
  9. ^ Wood, Tom (22 November 2019). "Scientists Detect Biggest Explosion In The Universe Since The Big Bang". LADbible. Archived from the original on 25 May 2021. Retrieved 23 November 2019.
  10. ^ Evgeny Derishev; et al. (2019). "The Physical Conditions of the Afterglow Implied by MAGIC's Sub-TeV Observations of GRB 190114C". The Astrophysical Journal. 2019 (2): L27. arXiv:1905.08285. Bibcode:2019ApJ...880L..27D. doi:10.3847/2041-8213/ab2d8a. S2CID 160010082.
  11. ^ The H.E.S.S. collaboration (2019). "A very-high-energy component deep in the γ-ray burst afterglow". Nature. 2019 (7783): 464–467. arXiv:1911.08961. Bibcode:2019Natur.575..464A. doi:10.1038/s41586-019-1743-9. PMID 31748724. S2CID 208175979.
  12. ^ The MAGIC collaboration (2019). "Teraelectronvolt emission from the γ-ray burst GRB 190114C". Nature. 2019 (7783): 455–458. arXiv:2006.07249. Bibcode:2019Natur.575..455M. doi:10.1038/s41586-019-1750-x. hdl:2318/1718773. PMID 31748726. S2CID 208190569.
  13. ^ The MAGIC Collaboration (2019). "Observation of inverse Compton emission from a long γ-ray burst". Nature. 2019 (7783): 459–463. arXiv:2006.07251. Bibcode:2019Natur.575..459M. doi:10.1038/s41586-019-1754-6. PMID 31748725. S2CID 208191199.
  14. ^ Veres, P; et al. (20 November 2019). "Observation of inverse Compton emission from a long γ-ray burst". Nature. 575 (7783): 459–463. arXiv:2006.07251. Bibcode:2019Natur.575..459M. doi:10.1038/s41586-019-1754-6. PMID 31748725. S2CID 208191199. Retrieved 20 November 2019.
  15. ^ Ruffini, R.; Fuksman, J. D. Melon; Vereshchagin, G. V. (2019). "On the Role of a Cavity in the Hypernova Ejecta of GRB 190114C". The Astrophysical Journal. 883 (2): 191. arXiv:1904.03163. Bibcode:2019ApJ...883..191R. doi:10.3847/1538-4357/ab3c51.
  16. ^ Rueda, J. A.; Ruffini, Remo; Karlica, Mile; Moradi, Rahim; Wang, Yu (2020). "Magnetic Fields and Afterglows of BdHNe: Inferences from GRB 130427A, GRB 160509A, GRB 160625B, GRB 180728A, and GRB 190114C". The Astrophysical Journal. 893 (2): 148. arXiv:1905.11339. Bibcode:2020ApJ...893..148R. doi:10.3847/1538-4357/ab80b9. S2CID 212725357.
  17. ^ "Hubble Studies Gamma-Ray Burst with the Highest Energy Ever Seen". Hubble Space Telescope. Retrieved 21 November 2019.

Further reading

Retrieved from "https://en.wikipedia.org/w/index.php?title=GRB_190114C&oldid=1271039485"