args[0]=message
args[1]=DB::DB::Message=HASH(0x31e3af0)
Re: Chernaya dyra
25.03.2013 14:08 | A.P. Vasi
Prochital tekst ot chmyrdyaya kotoryi
pytalsya unizit' drugogo avtora po prichine
ne pravil'nogo s ego tochki zreniya primeneniya
edinic izmereniya.
Vot kak raz zdes' i proyavilis' vnutrennie svoistva
ostavshiesya posle kursov gandol'erov.
Ne udosuzhilsya ob'yasnit' gandol'er po kakoi prichine
eti edinicy izmereniya huzhe chem drugie,
tak potom kak istinnyi gandol'er sam ispol'zuet
eti edenicy izmereniya.
-----------------------------------------------
http://www.computerra.ru/60311/betelgeusepastandfuture/
Sepul'ka Dmitri Wiebe 5 dnei nazad
V Krabovidnoi zvezdnaya velichina byla otricatel'noi,
a tut vo skol'ko raz blizhe? da eshe v kvadrat? Tak chto yarkaya - ne to slovo.
Naskol'ko mozhno doveryat' (g-nu Ponomarenko):
"V sluchae vzryva kak Sverhnovoi zvezdy Betel'geize , nahodyasheisya narasstoyanii 320-500 sv. let ot Zemli, potok UF izlucheniya v diapazone
200-300 nm sostavit 35-55 tysyach erg/sm2 i stanet naibolee
moshnym mutagennym faktorom za poslednie dva milliona
let. Ee
prevrashenie v sverhnovuyu budet soprovozhdat'sya sbrosom obolochki okolo 10-4
ee massy , sostoyashei , v osnovnom, iz vodoroda i geliya s energiei
kazhdogo yadra do 1,8 GeV /4/. Na Zemle detektor tipa Kamiokande II
zaregistriruet neitrinnuyu vspyshku intensivnost'yu v 25-75 tysyach sobytii
(pereschitano po rezul'tatam izmerenii na Kamiokande II vspyshki ot SN1987
/5/) . Cherez neskol'ko chasov (do sutok) posle registracii neitrino /5/,
stanet vidna dazhe dnem yarchaishaya zvezda, sravnimaya po blesku s polnoi
Lunoi. V techenie neskol'kih desyatkov - soten let posle maksimuma cherez
40-50 let posle prihoda na Zemlyu kvantov i neitrino, na Zemlyu budut
vozdeistvovat' relyativistskie yadra (v osnovnom, protony i gelii)
obolochki Sverhnovoi. ih polnyi flyuens na granice magnitosfery Zemli
sostavit 5*105 - 2*106 chast/sm2.
Chastichno oni budut zahvacheny magnitosferoi, chastichno vyzovut rozhdenie
vtorichnyh chastic v atmosfere, a chastichno doidut do poverhnosti Zemli,
stav vtorym sil'neishim mutagennym faktorom posle UF izlucheniya. Iz dannyh
/6/ sleduet, chto vzryva Betel'geize mozhno ozhidat' v blizhaishie neskol'ko
tysyach let." http://physics-animations.com/...
I tam zhe:
Pri vzryve tipovoi sverhnovoi krome nachal'nogo impul'sa rentgena, kotoryi spadaet neskol'ko let, obrazuetsya cepochka gamma-izluchatelei v kolichestve 0,075-0,1 massy Solnca (Ni-56- >Co-56(847,1288 keV)->Fe-56)/5/.Svetimost' tipovoi Sverhnovoi v gamma-diapazone padaet s 1042 erg/s do 1040 za dva goda, do 1038 - za tri goda , dal'she rabotaet Co-57, Ti-44, Na-22 - spad zamedlyaetsya. S 1038 do 1037 spad aktivnosti proishodit s tret'ego po pyatyi goda. V maksimume aktivnosti eto sootvetstvuet 0,5-0,8 erg/sm2 t.e. (3-5)*10^7 kvantov so srednei energiei 1 MeV na 1 sm2 v sekundu na granice Zemnoi atmosfery ot Sverhnovoi na rasstoyanii 320-500 sv let. S uchetom krivoi spada rentgenovskogo izlucheniya i prihoda GeVnyh zaryazhennyh chastic, pomimo mutagennyh faktorov, o pilotiruemoi kosmonavtike pridetsya zabyt' na desyatiletiya.
Zhdu ot Vas primerno takogo soobsheniya: "G-n Ponomarenko izvesten kak avtor mnozhestva slabyh i oshibochnyh rabot..."
-----------------------------
Dmitri Wiebe Sepul'ka 5 dnei nazad ---------------------------------
Dmitri Wiebe sergey da 3 dnya nazad V stat'e Ponomarenko privoditsya ssylka na stat'yu
Disturbance Ecology from Nearby Supernovae, a oni, v
svoyu ochered', ssylayutsya na rabotu Skalo so tovarishi,
gde oni dayut kriticheskuyu dozu UF-oblucheniya dlya mutacii
mikroorganizmov 600 erg/sm2. Esli sravnit' eto s dozoi,
kotoruyu Zemlya riskuet poluchit' ot Betel'geize (v stat'e
Ponomarenko, vidimo, imenno ona nazyvaetsya potokom), to
rezul'tat poluchaetsya pugayushim za predelami atmosfery
poluchitsya primerno 20000 erg/sm2 (esli brat' energiyu,
izluchennuyu sverhnovoi v UF-diapazone, iz stat'i Skalo i
dr.; 10^47 erg). No chto budet esli sravnit'
etu velichinu s UF-izlucheniem Solnca? My ezhesekundno poluchaem
ot Solnca 1,4 milliona erg na kv. sm. (solnechnaya postoyannaya).
Na dolyu UF prihoditsya neskol'ko procentov (zavisit ot togo,
kak opredelit' UF-diapazon). Pust' budet 5% dlya opredelennosti.
Poluchaem 70000 erg/sm2 v sekundu, a ne 20000 vsego, kak ot Betel'geize.
O tom, naskol'ko vazhno takoe dobavochnoe obluchenie, pust' govoryat
biologi. Pro drugie izlucheniya skazat' ne mogu, poskol'ku ne sovsem
ponimayu, chto imeetsya v vidu v stat'e.
[Citirovat'][Otvetit'][Novoe soobshenie]
Forumy >> Obsuzhdenie publikacii Astroneta |
Spisok / Derevo Zagolovki / Annotacii / Tekst |
- Chernaya dyra
(I. D. Novikov, "Fizika Kosmosa", 1986,
26.03.2003 20:16, 22.4 KBait, otvetov: 659)
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