Gamma-ray gbawara
. [1]Na gamma-ray astronomy, gamma-ray bursts ( GRBs ) bụ nnukwu mgbawa ike nke ahụrụ na ike ndị dị anya, nke NASA ndị dị ka "klas ọgụ ike nke mgbawa na mbara igwe". [1] Ha bụ ihe omume elektrọn kacha nwee ume na ọkụ Big Bang . [2] Mgbawa nwere ike gbaa site na milliseconds iri ruo ọtụtụ awa. [3] [4] Mgbe ọkụ gamma nwuchara nke mbụ, a na-ebunye okpomọkụ "ọkụ ọkụ" na-adịte aka n'ogologo ogologo ogologo ( X-ray, ultraviolet, optical, infrared, microwave and radio ).
. [2]The Source of most GRBs are billions of light years away from Earth, na-egosi na mgbawa bụ ma oké ike (a unit gbawara releases dị ka ike na a Central ole na ole dị ka Sun ga na ya dum 10-ijeri-afọ ndụ. ) [1] na oke ụkọ ( ole na ole kwa iwe kwa nde afọ [2] ). GRB niile a na-ahụ anya sitere n' akara ndị Mgbidi Milky Way, ọ bụ ebe na klas gbakwunyere ya, ndị na- ike gamma dị nro, akwụkwọ ya na magnetars n'ime Milky Way. A na-eche na ihe gamma-ray gbawara na Milky Way, na-atụ aka kpọmkwem n'ụwa, nwere ike ime ka ihe mkpochapụ dị ukwuu . [3] ụfọdụ ndị ọgụ na-eche na mkpochapụ nke Late Ordovician bụ na ọ bụ n'ihi mgbawa gamma-ray dị otú ahụ. [3] [4]
Achọpụtara GRBs na 1967 site na satịla ịtịla Vela, bụ nke emebere iji mkpụrụ osisi ngwa agha zoro zoro ezo ; Mgbeyọchara nke ọma, e fịna nke a na 1973. [1] Mgbe Mpụga ha mechara, a tụpụtara ọtụtụ ụdị usoro ihe atụ iji ihe mgbawa ndị a, dị ka nda ezi n'etiti egwuregwu neutron . [2] Obere ozi dị iji ụdị ụdị ndị a ruo mgbe mgba 1997 nke mbụ X-ray na anya afterglows na nha kpọmkwem nke redshifts ha site na iji anya spectroscopy, ya mere anya ha na-amụ ume. Nchọpụta ndị a, na-etinye ihe ndị ọzọ sochirinụ nke akwụkwọ na supernovae, mgbawa ahụ, mere ka anya na ìhè nke GRB dokwuo anya, na-etinye ha n'ụzọ doro anya na akwụkwọ ndị dị anya.
- ↑ Vedrenne & Atteia 2009
- ↑ Melott, A.L. (2009). "Late Ordovician geographic patterns of extinction compared with simulations of astrophysical ionizing radiation damage". Paleobiology 35 (3): 311–320. DOI:10.1666/0094-8373-35.3.311.
- ↑ Rodríguez-López (24 January 2021). "Influence of a galactic gamma ray burst on ocean plankton". Astronomical Notes 342 (1–2): 45–48. DOI:10.1002/asna.202113878. Retrieved on 21 October 2022.
- ↑ Thomas (28 February 2005). "Terrestrial Ozone Depletion due to a Milky Way Gamma-Ray Burst". The Astrophysical Journal 622 (2): L153–L156. DOI:10.1086/429799. Retrieved on 22 October 2022.