Kiloparsec-Scale Alignment of a Radio Jet with Cool Gas and Dust in a z~6 Quasar
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| Autores principales: | , , , , , , , , , , , , , |
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| Formato: | Preprint |
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2025
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| author | Walter, Fabian Banados, Eduardo Carilli, Chris Neeleman, Marcel Connor, Thomas Decarli, Roberto Farina, Emanuele Paulo Khusanova, Yana Mazzucchelli, Chiara Meyer, Romain Momjian, Emmanuel Rix, Hans-Walter Rojas-Ruiz, Sofia Venemans, Bram |
| author_facet | Walter, Fabian Banados, Eduardo Carilli, Chris Neeleman, Marcel Connor, Thomas Decarli, Roberto Farina, Emanuele Paulo Khusanova, Yana Mazzucchelli, Chiara Meyer, Romain Momjian, Emmanuel Rix, Hans-Walter Rojas-Ruiz, Sofia Venemans, Bram |
| contents | We present high-angular resolution (0.068", ~400pc) ALMA imaging of the [CII] line and dust continuum emission of PSO J352.4034-15.3373, a radio-loud quasar at z=5.83. The observations reveal a remarkably close match between the orientation of the [CII] and thermal dust emission mapped by ALMA, and radio synchrotron emission of a radio jet previously mapped by the VLBA. This narrow alignment extends over ~4kpc, reminiscent of the well-studied 'alignment effect' in lower-redshift radio galaxies. The [CII] kinematics show a linear increase in velocity with galactocentric radii up to ~200 km/s at r=2kpc, consistent with bulk motions within the galaxy potential, and not relativistic jet motions. The kinematics and respective morphologies are consistent with a picture in which the relativistic jet injects energy into the interstellar medium (potentially leading to subsequent star formation), giving rise to the observed alignment and significant (> 100 km/s) [CII] velocity dispersion within the host galaxy on kiloparsec scales. Indeed, the astonishingly close alignment and narrow linearity of the radio jet with the [CII] and dust emission are hard to conceive without some fundamental relationship between the two. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_23797 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Kiloparsec-Scale Alignment of a Radio Jet with Cool Gas and Dust in a z~6 Quasar Walter, Fabian Banados, Eduardo Carilli, Chris Neeleman, Marcel Connor, Thomas Decarli, Roberto Farina, Emanuele Paulo Khusanova, Yana Mazzucchelli, Chiara Meyer, Romain Momjian, Emmanuel Rix, Hans-Walter Rojas-Ruiz, Sofia Venemans, Bram Astrophysics of Galaxies We present high-angular resolution (0.068", ~400pc) ALMA imaging of the [CII] line and dust continuum emission of PSO J352.4034-15.3373, a radio-loud quasar at z=5.83. The observations reveal a remarkably close match between the orientation of the [CII] and thermal dust emission mapped by ALMA, and radio synchrotron emission of a radio jet previously mapped by the VLBA. This narrow alignment extends over ~4kpc, reminiscent of the well-studied 'alignment effect' in lower-redshift radio galaxies. The [CII] kinematics show a linear increase in velocity with galactocentric radii up to ~200 km/s at r=2kpc, consistent with bulk motions within the galaxy potential, and not relativistic jet motions. The kinematics and respective morphologies are consistent with a picture in which the relativistic jet injects energy into the interstellar medium (potentially leading to subsequent star formation), giving rise to the observed alignment and significant (> 100 km/s) [CII] velocity dispersion within the host galaxy on kiloparsec scales. Indeed, the astonishingly close alignment and narrow linearity of the radio jet with the [CII] and dust emission are hard to conceive without some fundamental relationship between the two. |
| title | Kiloparsec-Scale Alignment of a Radio Jet with Cool Gas and Dust in a z~6 Quasar |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2503.23797 |