Svyaz' strui i akkrecionnogo diska v aktivnoi galaktike
18.06.2002 14:23 | S. I. Blinnikov/ITEF, Moskva
Strui ("dzhety") v kvazarah i yadrah aktivnyh galaktik dolzhny porozhdat'sya energovydeleniem veshestva, zatyagivaemogo v central'nuyu chernuyu dyru v hode diskovoi akkrecii.
Hudozhestvennoe izobrazhenie strui vokrug massivnoi chernoi dyry s akrecionnym diskom. (Avtorskie prava: Dr. Wolfgang Steffen, Project Cosmovision; University of Guadalajara, Mexico) |
Radioizobrazheniya 3C120, poluchennye na VLBA na chastote 43 GGc. |
Sopostavlenie rentgena i radio izlucheniya 3C120. a). Rentgen v diapazone 2.420-keV. Krasnym otmecheny momenty provalov potoka, a strelkami momenty vybrosov yarkih radio uzlov l, o, t, u s predydushego risunka. b). "Energeticheskii" spektral'nyi indeks v zakone F ~ E-. c) Radio potoki na chastotah 14.5, 22, 37 i 43 GGc pomechennye simvolami raznyh cvetov. |
Galaktika 3C120 (krasnoe smeshenie z = 0.033) byla vybrana iz-za shodstva rentgenovskogo i radio izlucheniya s mikrokvazarami. Radionablyudeniya dzheta 3C120 provodilis' na reshetke antenn Very Long Baseline Array (VLBA) pochti ezhemesyachno s noyabrya 1997 do aprelya 2001. Diagonal'nye linii na radioizobrazhenii pokazyvayut traektorii glavnyh sverh-yarkih uzlov. Ih proekcionnaya kazhushayasya skorost' poluchaetsya ot 4.1 do 5.0c (gde c skorost' sveta), esli prinyat' parametr Habbla 65 km s-1 Mpk-1. Togda rasstoyanie ot 3C120 do nas 140 Mpk, i 1 millisekunda dugi sootvetstvuet dline 0.70 pk.
Rentgen nablyudali v diapazone 2.420-keV s 1997 po nachalo 2000 g. na sputnike Rossi X-ray Timing Explorer (RXTE). Na vtorom risunke strelochki pokazyvayut momenty vybrosov radio uzlov (l,o, t, u), kotorye yavno korreliruyut s provalami rentgenovskogo potoka i izmeneniyami zhestkosti spektra , pomechennymi krasnym cvetom. Avtory delayut vyvod, chto 3C120 vedet sebya podobno mikrokvazaru GRS1915+105.
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Po materialam zhurnala Nature.
Publikacii s klyuchevymi slovami:
dzhet - Sverhmassivnye chernye dyry - akkrecionnyi disk - aktivnaya galaktika - Yadra galaktik - agn - kvazary
Publikacii so slovami: dzhet - Sverhmassivnye chernye dyry - akkrecionnyi disk - aktivnaya galaktika - Yadra galaktik - agn - kvazary | |
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