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XTE J1550-564

The visual band light curve of a flare on V381 Normae, adapted from Poutanen et al. (2014)
Observation data Epoch J2000      Equinox J2000
Constellation	Norma
Right ascension	15 50 58.78
Declination	−56° 28′ 35.0″
Apparent magnitude (V)	16.6
Other designations
V381 Normae
Database references
SIMBAD	data

XTE J1550-564, sometimes abbreviated to J1550 and also known as V381 Normae, is a low-mass X-ray binary in the constellation Norma. It is composed of a black hole around 10 times as massive as the Sun, and a star of spectral type K3III. The black hole fires out jets of matter that are thought to arise from an accretion disk, and is hence known as a microquasar.

References

1. Poutanen, Juri; Veledina, Alexandra; Revnivtsev, Mikhail G. (December 2014). "Colours of black holes: infrared flares from the hot accretion disc in XTE J1550–564". Monthly Notices of the Royal Astronomical Society. 445 (4): 3987–3998. arXiv:1409.6504. Bibcode:2014MNRAS.445.3987P. doi:10.1093/mnras/stu1989.
2. ^ "V* V381 Nor". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 18 August 2015.
3. ^ Steiner, James F.; Reis, Rubens C.; McClintock, Jeffrey E.; Narayan, Ramesh; Remillard, Ronald A.; Orosz, Jerome A.; Gou, Lijun; Fabian, Andrew C.; Torres, Manuel A. P. (2011). "The spin of the black hole microquasar XTE J1550-564 via the continuum-fitting and Fe-line methods". Monthly Notices of the Royal Astronomical Society. 416 (2): 941–58. arXiv:1010.1013. Bibcode:2011MNRAS.416..941S. doi:10.1111/j.1365-2966.2011.19089.x. S2CID 53399981.

v t e Constellation of Norma
List of stars in Norma
Stars	Bayer γ γ δ ε ζ η θ ι ι κ λ μ Variable R S T RT RZ IM QU QV QX V378 HD 142415 143183 143361 148156 148937 330075 Other 1E 161348-5055 2M1540 2XMM J160050.7–514245 (Apep) SCR J1546−5534 SGR J1550−5418 XTE J1550–564
Exoplanets HD 142415 b HD 143361 b HD 148156 b HD 330075 b
Star clusters NGC 5925 NGC 5999 NGC 6005 NGC 6031 NGC 6067 NGC 6087 NGC 6115 NGC 6134 NGC 6152 NGC 6167 NGC 6169
Nebulae Mz 1 Mz 3 RCW 103 SDC 335.579-0.292 Shapley 1
Galaxy clusters Norma Cluster
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