التفاصيل البيبلوغرافية
| العنوان: |
A rapidly changing jet orientation in the stellar-mass black-hole system V404 Cygni |
| المؤلفون: |
Miller-Jones, James C. A., Tetarenko, Alexandra J., Sivakoff, Gregory R., Middleton, Matthew J., Altamirano, Diego, Anderson, Gemma E., Belloni, Tomaso M., Fender, Rob P., Jonker, Peter G., Körding, Elmar G., Krimm, Hans A., Maitra, Dipankar, Markoff, Sera, Migliari, Simone, Mooley, Kunal P., Rupen, Michael P., Russell, David M., Russell, Thomas D., Sarazin, Craig L., Soria, Roberto, Tudose, Valeriu |
| المصدر: |
Nature, 569(7756), 374-377, (2019-05-16) |
| بيانات النشر: |
Nature Publishing Group |
| سنة النشر: |
2019 |
| المجموعة: |
Caltech Authors (California Institute of Technology) |
| مصطلحات موضوعية: |
Compact astrophysical objects, High-energy astrophysics, Time-domain astronomy |
| الوصف: |
Powerful relativistic jets are one of the main ways in which accreting black holes provide kinetic feedback to their surroundings. Jets launched from or redirected by the accretion flow that powers them are expected to be affected by the dynamics of the flow, which for accreting stellar-mass black holes has shown evidence for precession due to frame-dragging effects that occur when the black-hole spin axis is misaligned with the orbital plane of its companion star. Recently, theoretical simulations have suggested that the jets can exert an additional torque on the accretion flow, although the interplay between the dynamics of the accretion flow and the launching of the jets is not yet understood. Here we report a rapidly changing jet orientation—on a time scale of minutes to hours—in the black-hole X-ray binary V404 Cygni, detected with very-long-baseline interferometry during the peak of its 2015 outburst. We show that this changing jet orientation can be modelled as the Lense–Thirring precession of a vertically extended slim disk that arises from the super-Eddington accretion rate. Our findings suggest that the dynamics of the precessing inner accretion disk could play a role in either directly launching or redirecting the jets within the inner few hundred gravitational radii. Similar dynamics should be expected in any strongly accreting black hole whose spin is misaligned with the inflowing gas, both affecting the observational characteristics of the jets and distributing the black-hole feedback more uniformly over the surrounding environment. ; © 2019 Springer Nature Publishing AG. Received 29 August 2018; Accepted 06 February 2019; Published 29 April 2019. Data availability: The raw VLBA data are publicly available from the NRAO archive (https://archive.nrao.edu/archive/advquery.jspTest), under project codes BM421 and BS249. All software packages used in our analysis (AIPS, Difmap, CASA, UVMULTIFIT and EMCEE) are publicly available. The final calibrated images and uv-data are available from the ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://arxiv.org/abs/1906.05400Test; https://doi.org/10.1038/s41586-019-1152-0Test; oai:authors.library.caltech.edu:vedfm-a9z48; eprintid:95243; resolverid:CaltechAUTHORS:20190506-094217685 |
| DOI: |
10.1038/s41586-019-1152-0 |
| الإتاحة: |
https://doi.org/10.1038/s41586-019-1152-0Test |
| حقوق: |
info:eu-repo/semantics/openAccess ; Other |
| رقم الانضمام: |
edsbas.4D030C7A |
| قاعدة البيانات: |
BASE |
