Difference between revisions of "2S 1845-024"
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(Created page with " Also known as: GX 1843-02 [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GS+1843-02&submit=SIMBAD+search Simbad] '''Monitoring data''': [http://swift.gsfc.nasa.gov/resu...") |
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Also known as: GX 1843-02 [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GS+1843-02&submit=SIMBAD+search Simbad] | Also known as: GX 1843-02 [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GS+1843-02&submit=SIMBAD+search Simbad] | ||
Latest revision as of 16:57, 18 April 2018
Also known as: GX 1843-02 Simbad
Monitoring data: Swift/BAT Monitored but not detected by Fermi/GBM
Coordinates
| RA | 18h 48m 17.7s | Dec | -02° 25' 13" |
| l | 30.4197 | b | -0.4046 |
Orbit and Pulse
Very regular outbursts every 242d indicate orbital period, making it similar to GRO J1008-57. Orbit determined by Finger et al (1999):
| Period | 242.180 ± 0.012 days |
| T0 | JD 2449616.98 ± 0.18 |
| a sin i | 689 ± 38 lt-s |
| e | 0.8792 ± 0.0054 |
| ω | 252.2 ± 9.4 |
Pulse period about 94s (no recent measurement available).
Available data
- RXTE in 1998 and 2000 (PI Mark Finger)
- Chandra 55ks total (PI Mark Finger)
- XMM 40ks total
- many INTEGRAL SCWs
- sometimes in FOV of Swift
Literature
This is likely an incomplete list!
- Makino (1988) - Discovery (GS 1843-024)
- Zhang el al. (1996) - 2nd discovery (GRO 1849-03), BATSE-spectra
- Soffitta et al. (1998) - classification as BeXRTB
- Finger et al. (1999) - orbital parameters, pulse profiles, association with SAS-3 source (2S 1854-024)
- Doroshenko et al. (2008) - INTEGRAL data, fitted with simple power-law (no cutoff)