Nkwughachi gamma dị nro
Adị nro gamma repeater (SGR) bụ ihe na-enyocha mbara igwe nke na-ebunye nnukwu mgbawa nke gamma-ray na X-ray n'oge oge. A na-eche na ha bụ ụdị magnetar ma ọ bụ, ọzọ, kpakpando neutron nwere diski fossil gburugburu ha.[1]
[2] [3]Na Machị 5, 1979 [1] ka ahụrụ ihe mgbawa gamma-ray siri ike. Dị ka ọtụtụ ndị nnata nọ n'ebe dị iche iche na Solar Sistemu [2] mgbawa n'oge dịtụ iche, a ga- magnesium ntụzịaka ya, ma gosi na ọ sitere n'ụdị ihe nke supernova na nnukwu igwe Magellanic.
Astronomer Chryssa Kouveliotou nke Universities Space Research Association (USRA) na NASA's Marshall Space Flight Center echiche echiche ahụ na ndị na-ama gamma dị nro bụ ihe ndọta. [1] [2] Dị ka echiche ahụ si kwuo, mgbawa ahụ ga-eme ka ihe ahụ ikelata ntụgharị ya. Na 1998, [1] [2] o ji akara oge nke soft gamma repeater SGR 1806-20 . Oge ahụ nkọwa site na 0.008. Mpempe 1993, ọ gbakọọ na nke a ga-akụkọ ya site na magnetar nwere ike ndọta nke 8 × 10 10 teslas (8 × 10 14 gauss ). Nke a zuru iji mee ka obodo mbara igwe nke mba ụwa kwenye na ndị na-eji gamma dị nro bụ ihe ndọta.
Ihe mgbawa gamma dị nro dị egwu na-ama atụ bụ SGR 1900+14 agbara na Ọgọst 27, 1998. N'agbanyeghị nnukwu anya na SGR a, nke e mere ndụ na afọ 20,000 ọkụ, mgbawa ahụ nwere ikike dị ukwuu na ikuku ụwa. . Atɔm ndị dị na ionosphere, bụ nke a na-ahụ ionized site na radieshon Sun n'ehihie ma na-ahụ ya na atom na-anọpụ iche n'iji, bụ ionized n' Meghan na ọkwa ala-ụzọ ehihie na-agụ. Rossi X-Ray Timing Explorer ( RXTE), satĩlattị X-ray, natara akara ngosi zie ike site na mgbawa a n'oge a, n'agbanyeghị na a na-eduzi ya n'ụdị dị iche iche nke mbara igwe, ọ ụzọ ka a na-echebe ya dị na radieshon. .
- ↑ Zhang (2000). "Nature and Nurture: a Model for Soft Gamma-Ray Repeaters". The Astrophysical Journal 545 (2): 127–129. DOI:10.1086/317889.
- ↑ Duncan (May 1998). The March 5th Event. Magnetars', Soft Gamma Repeaters & Very Strong Magnetic Fields. University of Texas at Austin. Retrieved on March 2, 2009.
- ↑ Dooling (May 20, 1998). "Magnetar" discovery solves 19-year-old mystery. NASA. Archived from the original on March 11, 2009. Retrieved on March 2, 2009.