Ginga/ASM - RXTE/ASM - MAXI/GSC, Long-term light curve of NS-LMXB

Asai et al. PASJ 74, 974 (2022)

Last update : 2024-10-25 00:10 UT ( 60608 MJD )

0. Ginga/ASM + RXTE/ASM + MAXI/GSC (8)

GX 3+1 qdp	GX 9+1 qdp	Ser X-1 qdp	4U 1735-444 qdp
GX 9+9 qdp	4U 1746-37 qdp	4U 1708-40 qdp	4U 1822-000 qdp

1. Most luminous (10³⁸ erg/s) sources (Z-sources and GX 13+1). NP (8)

NP (No Periodic variation)
Flux is almost constant, only with small variation

Sco X-1 qdp	GX 17+2 qdp	GX 5-1 qdp	Cyg X-2 qdp
GX 349+2 qdp	LMC X-2 qdp	GX 340+0 qdp	GX 13+1 qdp

2-1. moderate-luminous Atoll sources (10³⁶ - 10³⁷ erg/s). CP (2) and MP (7).

CP (clear periodic variation). 2 sources

GX 3+1 qdp

GX 9+1 qdp

MP (Modified Periodic variation). 7 sources

Ser X-1 qdp	4U 1735-444 qdp	GX 9+9 qdp	4U 1746-37 qdp
4U 1708-40 qdp	4U 1822-000 qdp	1A 1246-588 qdp

2-2. moderate-luminous Atoll sources (10³⁶ - 10³⁷ erg/s). NP (8)

NP (No Periodic variation), Flux is almost constant, 8 sources.

4U 1624-490 qdp	4U 1254-690 qdp	4U 2127+119 qdp	4U 0513-40 qdp
4U 0614+091 qdp	SLX1735-269 qdp	1H 0918-548 qdp	4U 1323-619 qdp

3. Dimming Atoll sources (10³⁶ erg/s). NP (3)

NP, Flux is decreasing, 3 sources.

4U 1543-624 qdp

4U 1916-053 qdp

1H 1556-605 qdp

4. Variable sources 1.LV (large variation). 3 sources

large luminosity change of 1-2 orders of magnitude.

Cir X-1 qdp

4U 1636-536 qdp

GS 1826-238 qdp

4. Variable sources 2.FV (fast variation), 2 sources

variability is shorter than 1 year.

4U 1820-303 qdp

4U 1705-440 qdp

4. Variable sources 3.Transient, 6 sources

Aql X-1 qdp	EXO 1745-248 qdp	XTE J1709-267 qdp	4U 1608-522 qdp
4U 1745-203 qdp	HETE J1900.1-2455 qdp	XTE J1701-462 (new) qdp

5. Contaminated sources

Contaminated, 2 sources

SAX J1747.0-2853 qdp

4U 1724-307 qdp

In ASM, 1 Crab = 75 c/s.
In MAXI V7L, 1 Crab = 3.45 ph/s/cm2 (2-10keV).
see Asai et al. PASJ 74, 974 (2022) arXiv pdf