Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Ferreira Jonathan"'
Autor:
Scepi, Nicolas, Dexter, Jason, Begelman, Mitchell C., Marcel, Grégoire, Ferreira, Jonathan, Petrucci, Pierre-Olivier
Publikováno v:
A&A 692, A153 (2024)
X-ray binaries (XRBs) exhibit spectral hysteresis for luminosities in the range $10^{-2}\lesssim L/L_\mathrm{Edd}\lesssim 0.3$, with a hard X-ray spectral state that persists from quiescent luminosities up to $\gtrsim 0.3L_\mathrm{Edd}$, transitionin
Externí odkaz:
http://arxiv.org/abs/2410.12920
Autor:
De Prins, Toon, Van Winckel, Hans, Ferreira, Jonathan, Verhamme, Olivier, Kamath, Devika, Zimniak, Nathan, Jacquemin-Ide, Jonathan
Publikováno v:
A&A 689, A151 (2024)
Aims: We consider cold self-similar magnetohydrodynamic (MHD) disc wind solutions to describe jets that are launched from the circumcompanion accretion discs in post-AGB binaries. Resulting predictions are matched to observations for five different p
Externí odkaz:
http://arxiv.org/abs/2406.09280
Autor:
Datta, Sudeb Ranjan, Chakravorty, Susmita, Ferreira, Jonathan, Petrucci, Pierre-Olivier, Kallman, Timothy R, Jacquemin-Ide, Jonatan, Zimniak, Nathan, Wilms, Joern, Bianchi, Stefano, Parra, Maxime, Clavel, Maïca
Publikováno v:
A&A 687, A2 (2024)
Observation of blue-shifted X-ray absorption lines indicates the presence of wind from the accretion disk in X-ray binaries. Magnetohydrodynamic (MHD) driving is one of the possible wind launching mechanisms. Recent theoretical development makes magn
Externí odkaz:
http://arxiv.org/abs/2403.13077
Autor:
Verhamme, Olivier, Kluska, Jacques, Ferreira, Jonathan, Bollen, Dylan, De Prins, Toon, Kamath, Devika, Van Winckel, Hans
Context. Jets are commonly detected in post-asymptotic giant branch (post-AGB) binaries and originate from an accretion process onto the companion of the post-AGB primary. These jets are revealed by high-resolution spectral time series. Aims. This pa
Externí odkaz:
http://arxiv.org/abs/2401.16370
Publikováno v:
Astronomische Nachrichten, Volume 344, Issue 4, Special Issue, Black Hole accretion under the Xray microscope, May 2023
The non linear correlation between the UV and X-ray emission observed in Active Galactic Nuclei remains a puzzling question that challenged accretion models. While the UV emission originates from the cold disk, the X-ray emission is emitted by a hot
Externí odkaz:
http://arxiv.org/abs/2305.13695
Publikováno v:
A&A 669, A159 (2023)
Aims. We wish to establish a firm link between jet simulations and analytical studies of magnetically-driven steady-state jets from Keplerian accretion disks. In particular, the latter have predicted the existence of recollimation shocks due to the d
Externí odkaz:
http://arxiv.org/abs/2210.14809
Autor:
Chakravorty, Susmita, Petrucci, Pierre-Olivier, Datta, Sudeb Ranjan, Ferreira, Jonathan, Wilms, Joern, Jacquemin-Ide, Jonatan, Clavel, Maica, Marcel, Gregoire, Rodriguez, Jerome, Malzac, Julien, Belmont, Renaud, Corbel, Stephane, Coriat, Mickael, Henri, Gilles, Parra, Maxime
In our self-similar, analytical, magneto-hydrodynamic (MHD) accretion-ejection solution, the density at the base of the outflow is explicitly dependent on the disk accretion rate - a unique property of this class of solutions. We had earlier found th
Externí odkaz:
http://arxiv.org/abs/2209.15127
Autor:
Ferreira, Jonathan, Marcel, Gregoire, Petrucci, Pierre-Olivier, Rodriguez, Jerome, Malzac, Julien, Belmont, Renaud, Clavel, Maica, Henri, Gilles, Corbel, Stephane, Coriat, Mickael
Publikováno v:
A&A 660, A66 (2022)
Low Frequency Quasi-Periodic Oscillations or LF QPOs are ubiquitous in BH X-ray binaries and provide strong constraints on the accretion-ejection processes. Although several models have been proposed so far, none has been proven to reproduce all obse
Externí odkaz:
http://arxiv.org/abs/2202.00438
Autor:
Polo, Felipe Maia, Mendonça, Gabriel Caiaffa Floriano, Parreira, Kauê Capellato J., Gianvechio, Lucka, Cordeiro, Peterson, Ferreira, Jonathan Batista, de Lima, Leticia Maria Paz, Maia, Antônio Carlos do Amaral, Vicente, Renato
We present and make available pre-trained language models (Phraser, Word2Vec, Doc2Vec, FastText, and BERT) for the Brazilian legal language, a Python package with functions to facilitate their use, and a set of demonstrations/tutorials containing som
Externí odkaz:
http://arxiv.org/abs/2110.15709