![Na pervuyu stranicu](http://images.astronet.ru/img/bookicon.gif)
<< 6.7 Kachestvennaya kartina evolyucii | Oglavlenie | 7.2 Neitronizaciya >>
7. Novye fizicheskie faktory. Mehanicheskaya ustoichivost' zvezd
Razdely
- 7.1 Obshaya teoriya otnositel'nosti -- OTO
- 7.2 Neitronizaciya
- 7.3 Dva tipa energeticheskih poter'
- 7.4 Rol' neitrino v evolyucii zvezd
7.1 Obshaya teoriya otnositel'nosti -- OTO
Vezde vyshe my pol'zovalis' n'yutonovskoi teoriei tyagoteniya, uslovie primenimosti
kotoroi
. Vvedem poka formal'no ponyatie gravitacionnogo radiusa
-- velichiny, pri kotoroi parabolicheskaya skorost' ubeganiya s poverhnosti
stanovitsya ravnoi
v ramkah n'yutonovskoi teorii:
![$\displaystyle {GM\over {r_g}}={c^2\over 2}\;$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1404.gif)
![$\displaystyle \;r_g={2GM\over{c^2}}.
$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1405.gif)
![$ r_g=3\cdot 10^5\;(M/M_\odot)$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1406.gif)
Kachestvenno effekty OTO mozhno uchest' sleduyushim obrazom: tam, gde v n'yutonovskoi
teorii sila tyazhesti proporcional'na , v OTO eta sila
,
t.e. sila tyagoteniya obrashaetsya v beskonechnost' na
. Naidem teper' velichinu
srednei plotnosti, pri kotoroi effekty OTO stanovyatsya vazhnymi:
![$\displaystyle \bar{\rho}_{\rm cr}={M\over {{4\pi\over 3}R^3}}\approx{M\over {{4\pi\over 3}r_g^3}}=2\cdot
10^{16}\left({M_\odot\over M}\right)^2\;$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1409.gif)
![$\displaystyle ^3.
$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img533.gif)
![$ M\sim 10^8\;M_\odot$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1410.gif)
![$ \bar{\rho}_{\rm cr}\sim 1\;$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1411.gif)
![$ ^3$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img20.gif)
![$ \bar{\rho}_{\rm cr}\sim 10^{16}\;$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img1412.gif)
![$ ^3$](https://images.astronet.ru/pubd/2008/02/15/0001226214/img20.gif)
<< 6.7 Kachestvennaya kartina evolyucii | Oglavlenie | 7.2 Neitronizaciya >>
Publikacii s klyuchevymi slovami:
Evolyuciya zvezd - vnutrennee stroenie zvezd - termoyadernye reakcii - fizicheskie processy
Publikacii so slovami: Evolyuciya zvezd - vnutrennee stroenie zvezd - termoyadernye reakcii - fizicheskie processy | |
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