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Abstract:

Only a few of the dozen or so known stellar-mass black holes have been observed away from the plane of the Galaxy1. Those few could have been ejected from the plane as a result of a 'kick' received during a supernova explosion, or they could be remnants of the population of massive stars formed in the early stages of evolution of the Galaxy. Determining their orbital motion should help to distinguish between these options. Here we report the transverse motion (in the plane of the sky) for the black-hole X-ray nova XTE J1118+480 (refs 2-5), from which we derive a large space velocity. This X-ray binary system has an eccentric orbit around the Galactic Centre, like most objects in the halo of the Galaxy, such as ancient stars and globular clusters. The properties of the system suggest that its age is comparable to or greater than the age of the Galactic disk. Only an extraordinary 'kick' from a supernova could have launched the black hole into an orbit like this from a birthplace in the disk of the Galaxy.

Registro:

Documento: Artículo
Título:A high-velocity black hole on a Galactic-halo orbit in the solar neighbourbood
Autor:Mirabel, I.F.; Dhawan, V.; Mignani, R.P.; Rodrigues, I.; Guglielmetti, F.
Filiación:Service d'Astrophysique/cea, CE-Saclay, 91191 Gif/Yvette, France
Instituto de Astronomía y Física del Espacio, cc5, 1428 Buenos Aires, Argentina
National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801, United States
European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching bei Munchen, DE-85740, Germany
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
Palabras clave:Galaxies; X rays; Black hole; Astronomy; astrophysics; article; astronomy; cosmos; explosion; motion; photon; priority journal; velocity
Año:2001
Volumen:413
Número:6852
Página de inicio:139
Página de fin:141
DOI: http://dx.doi.org/10.1038/35093060
Título revista:Nature
Título revista abreviado:Nature
ISSN:00280836
CODEN:NATUA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00280836_v413_n6852_p139_Mirabel

Referencias:

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  • Remillard, R., Morgan, E., Smith, D. & Smith, E. XTE J1118+480, IAU Circ. No. 7389 (2000); Uemura, M., Discovery and photometric observation of the optical counterpart in a possible Galactic halo X-ray transient, XTE J1118+480 (2000) Publ. Astron. Soc. Jpn., 52, pp. L15-L19
  • McClintock, J.E., A black hole of greater than 6 MO in the X-ray nova XTE J118+480 (2001) Astrophys. J., 551, pp. L147-L150
  • Wagner, R.M., The halo black hole X-ray transient XTE J1118+480 (2001) Astrophys. J., 556, pp. 42-46
  • McClintock, J.E., Complete simultaneous spectral observations of the black-hole X-ray nova XTE J1118+480 (2001) Astrophys. J., 555, pp. 477-482
  • Pooley, G. G. & Waldram, E. M. XTE J1118+480. IAU Circ. No. 7390 (2000); Dhawan, V., Pooley, G. G., Ogley, R. N. & Mirabel, I. F. XTE J1118+480. IAU Circ. No. 7395 (2000); Fender, R.P., Spectral evidence for a powerful compact jet from XTE J1118+480 (2001) Mort. Not. R. Astron. Soc., 322, pp. L23-L27
  • Hynes, R.I., The X-ray transient XTE J1118+480: Multiwavelength observations of a low-state minioutburst (2000) Astrophys. J., 539, pp. L37-L40
  • Johnson, D.R.H., Soderblom, D.R., Calculating Galactic space velocities and their uncertainties (1987) Astron. J., 93, pp. 864-867
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  • Nelemans, G., Tauris, T.M., Van den Heuvel, E.P.J., Constraints on mass ejection in black hole formation derived from black hole X-ray binaries (1999) Astron. Astrophys., 352, pp. L87-L90
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  • Zahn, J.-P., Tidal friction in close binary stars (1977) Astron. Astrophys., 57, pp. 383-394
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  • Dauphole, B., The kinematics of globular clusters, apocentric distances and a halo metallicity gradient (1996) Astron. Astrophys., 313, pp. 119-128
  • Frontera, F., A measurement of the broad-band spectrum of XTE J1118+480 with BeppoSAX and its astrophysical implications Astrophys. J., , in the press
  • Haswell, C. A. et al. XTE J1118+480. IAU Circ. No. 7407 (2000); Kulkarni, S.R., Hut, P., McMillan, S., Stellar black holes in globular clusters (1993) Nature, 364, pp. 421-423
  • Mirabel, I.F., Rodriguez, L.F., Microquasars in our Galaxy (1998) Nature, 392, pp. 673-676
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Citas:

---------- APA ----------
Mirabel, I.F., Dhawan, V., Mignani, R.P., Rodrigues, I. & Guglielmetti, F. (2001) . A high-velocity black hole on a Galactic-halo orbit in the solar neighbourbood. Nature, 413(6852), 139-141.
http://dx.doi.org/10.1038/35093060
---------- CHICAGO ----------
Mirabel, I.F., Dhawan, V., Mignani, R.P., Rodrigues, I., Guglielmetti, F. "A high-velocity black hole on a Galactic-halo orbit in the solar neighbourbood" . Nature 413, no. 6852 (2001) : 139-141.
http://dx.doi.org/10.1038/35093060
---------- MLA ----------
Mirabel, I.F., Dhawan, V., Mignani, R.P., Rodrigues, I., Guglielmetti, F. "A high-velocity black hole on a Galactic-halo orbit in the solar neighbourbood" . Nature, vol. 413, no. 6852, 2001, pp. 139-141.
http://dx.doi.org/10.1038/35093060
---------- VANCOUVER ----------
Mirabel, I.F., Dhawan, V., Mignani, R.P., Rodrigues, I., Guglielmetti, F. A high-velocity black hole on a Galactic-halo orbit in the solar neighbourbood. Nature. 2001;413(6852):139-141.
http://dx.doi.org/10.1038/35093060