Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/123185
Title: A galactic microquasar mimicking winged radio galaxies
Author: Martí, Josep
Luque Escamilla, Pedro L.
Bosch i Ramon, Valentí
Paredes i Poy, Josep Maria
Keywords: Quàsars
Galàxies
Quasars
Galaxies
Issue Date: 24-Nov-2017
Publisher: Nature Publishing Group
Abstract: A subclass of extragalactic radio sources known as winged radio galaxies has puzzled astronomers for many years. The wing features are detected at radio wavelengths as low-surface-brightness radio lobes that are clearly misaligned with respect to the main lobe axis. Different models compete to account for these peculiar structures. Here, we report observational evidence that the parsec-scale radio jets in the Galactic microquasar GRS 1758-258 give rise to a Z-shaped radio emission strongly reminiscent of the X and Z-shaped morphologies found in winged radio galaxies. This is the first time that such extended emission features are observed in a microquasar, providing a new analogy for its extragalactic relatives. From our observations, we can clearly favour the hydrodynamic backflow interpretation against other possible wing formation scenarios. Assuming that physical processes are similar, we can extrapolate this conclusion and suggest that this mechanism could also be at work in many extragalactic cases.
Note: Reproducció del document publicat a: https://doi.org/10.1038/s41467-017-01976-5
It is part of: Nature Communications, 2017, vol. 8, num. 1757
Related resource: https://doi.org/10.1038/s41467-017-01976-5
URI: http://hdl.handle.net/2445/123185
ISSN: 2041-1723
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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