تقرير
A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event
| العنوان: | A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event |
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| المؤلفون: | 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. |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | 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. Comment: 14 pages, 7 figures, submitted to MNRAS |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2401.17286 |
| رقم الأكسشن: | edsarx.2401.17286 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |