A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866911767911727104 |
|---|---|
| author | Goodwin, A. J. Anderson, G. E. Miller-Jones, J. C. A. Malyali, A. Grotova, I. Homan, D. Kawka, A. Krumpe, M. Liu, Z. Rau, A. |
| author_facet | Goodwin, A. J. Anderson, G. E. Miller-Jones, J. C. A. Malyali, A. Grotova, I. Homan, D. Kawka, A. Krumpe, M. Liu, Z. Rau, A. |
| contents | We present an extensive radio monitoring campaign of the nuclear transient eRASSt J234403-352640 with the Australia Telescope Compact Array, one of the most X-ray luminous TDE candidates discovered by the SRG/eROSITA all-sky survey. The observations reveal a radio flare lasting more than 1000 d, coincident with the X-ray, UV, optical, and infra-red flare of this transient event. Through modelling of the 10 epochs of radio spectral observations obtained, we find that the radio emission is well-described by an expanding synchrotron emitting region, consisting of a single ejection of material launched coincident with the optical flare. We conclude that the radio flare properties of eRASSt J234403-352640 are consistent with the population of radio-emitting outflows launched by non-relativistic tidal disruption events, and that the flare is likely due to an outflow launched by a tidal disruption event (but could also be a due to a new AGN accretion event) in a previously turned-off AGN. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_17286 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event Goodwin, A. J. Anderson, G. E. Miller-Jones, J. C. A. Malyali, A. Grotova, I. Homan, D. Kawka, A. Krumpe, M. Liu, Z. Rau, A. High Energy Astrophysical Phenomena We present an extensive radio monitoring campaign of the nuclear transient eRASSt J234403-352640 with the Australia Telescope Compact Array, one of the most X-ray luminous TDE candidates discovered by the SRG/eROSITA all-sky survey. The observations reveal a radio flare lasting more than 1000 d, coincident with the X-ray, UV, optical, and infra-red flare of this transient event. Through modelling of the 10 epochs of radio spectral observations obtained, we find that the radio emission is well-described by an expanding synchrotron emitting region, consisting of a single ejection of material launched coincident with the optical flare. We conclude that the radio flare properties of eRASSt J234403-352640 are consistent with the population of radio-emitting outflows launched by non-relativistic tidal disruption events, and that the flare is likely due to an outflow launched by a tidal disruption event (but could also be a due to a new AGN accretion event) in a previously turned-off AGN. |
| title | A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2401.17286 |