Документ взят из кэша поисковой машины. Адрес оригинального документа : http://hea.iki.rssi.ru/conf/hea2010/Presentations/21/Suleymanov.pdf Дата изменения: Wed Jan 26 13:25:08 2011 Дата индексирования: Tue Oct 2 00:59:32 2012 Кодировка: Поисковые слова: m 5

() . ,


. ,


, . ,


. ,




­


, ...



Prohibited by General Relativity

Special family of low-mass strange stars

Universal low-mass curve

-R! ­ R



(LMXBs) (H, He, C) ­ 10 () 1000 ( )

4U 1724-307 Terzan 2



LEdd 4 GMc(1 + z ) 4 = = 4 R 2 SB TEdd 0.2(1 + X )

eff

Max T .

FEdd

LEdd =2 d (1 + z )
2 RBB d2

2

,

4U 1724-307 in Terzan 2

4 FBB = SBTBB



1 FE 4 BE ( f c Teff ) fc




Lobs = LBB

RBB

R = 2 (1 + z ) fc



London et al. 1984, 1986; , , 1986; Ebisuzaki 1987; Madej 1991; Madej et al. 2004,2005; Pavlov et al. 1991




«»
(. Lewin et al. 1993, жzel 2006, жzel et al. 2009)
4U 1724-307 in Terzan 2

,, " max FBB , TBB, min R

BB

, FBB LEdd(obs)

,, "
, fc 1.3 ­ 1.4

M-R,


M-R

d = 7.7 kpc

K~ d

-1

d = 5.3 kpc

FEdd ~ d-2


«» .
4U 1724-307 in Terzan 2

,, "
,


,, "
. fc = 1.4 ?


fc ­ L/L

( )

Edd

L < 0.05 L

Edd

L > 0.1 LEdd

R2 K = 4 2 (1 + z ) f c D10

2

« » fc ­ L/LEdd


,
K
-1/4

­ FBB fc ­ L/L
-1 / 4

Edd

K=

2 RBB

D

2 10

2 Robs =42 f c D10

fc K

D10 =

d 10 kpc



A=

K

-1 / 4

f

c

1 D10/ 2 = 1/ 2 R (1 + z )1

/2

FEdd

LEdd 1 = 4d 2 1 + z

TEdd (obs) ~ FEdd1/4 A, M-R,


M-R





GM NS 1 dPgas =- 2 dr RNS (1 - Rg / RNS )1

/2

+

4 H (k ff + e ) d c

k ff T 2 ( f J ) kT J J e = x ( - 3 J + eff xJ (1 + C )) ( J - B ) - k ff + e k ff + e mec 2 x x T x3 2
x= h kTeff C = c 2 h 2 / 2(kTeff )
3







Teff kT CJ k ff ( J - B )dx - e xJ (1 + 3 ))dx = 0 (4J - T mec 2 x k ff - (free-free + bound-free)



e





20 l = L / LEdd 0.001 0.98, log g = 14.0, 14.3 14.6, 6 : , , / 4 Z = 1, 0.3, 0.1, 0.01 ZSun RXTE 3-20
log g



. ­


4U 1724-307

Terzan 2, d = 5.3 ± 0.6


/R LMXBs (Suleimanov & Poutanen 2006, T
Edd)



(360 ) http://astro.uni-tuebingen.de/~suleiman/web_burst Terzan 2 ( R = 15.3 +1.4 M = 1.43 +/- 0.6 Msun Z = 0.3 Zsun ). -2.1 , Suleimanov, Poutanen, Revnivtsev, Werner Suleimanov, Poutanen, Werner submitted to A&A arXiv:1004.4871 arXiv:1009.6147


/R LMXBs (Heinke et al. 2006, R
obs

)



X7 (NS in 47 Tuc, Heinke et al 2006)
They used pure hydrogen model atmospheres.

RNS 14.5 ± 1.7 km at M = 1.4 MSun RNS 14.9 ± 1.5 km at M = 1.4 MSun

(Suleimanov & Poutanen 2006)



X7 (NS in 47 Tuc, Heinke et al 2006)
They used pure hydrogen model atmospheres.

RNS 14.5 ± 1.7 km at M = 1.4 MSun RNS 14.9 ± 1.5 km at M = 1.4 MSun

(Suleimanov & Poutanen 2006)



жzel (2009, 2010) X7 (NS in 47 Tuc, Heinke et al 2006)
They used pure hydrogen model atmospheres.

RNS 14.5 ± 1.7 km at M = 1.4 MSun RNS 14.9 ± 1.5 km at M = 1.4 MSun

(Suleimanov & Poutanen 2006)


...






F = 1 B ( f c Teff ), f c4 f c 1.3 - 1.9
c

f

K=

2 RBB

d

2 10

2 Robs = 42 f c d10

fc K

-1 / 4



R

-1/4 ­ F fc ­ L / LEdd = l






, (13 - 15 )