EXPLORING THE SOLUTION ZOO OF A SEMI-ANALYTICAL MHD MODEL FOR SELF-SIMILAR JETS C HIARA C ECCOBELLO Compact Objects For All Lund Observatory, 10-11 February 2020
AGN (PPNe) (YSOs) NSXRBs MAGNETARS BHXRBs
a BH Xray Binary example MAXI J 1836-194 Russell et al. 2014 MOTIVATION This is the JET spectral BREAK: shock/acceleration region
a BH Xray Binary example SHOCK JET BREAK ACCELERATION REGION Romero+2003, X-RAYS Markoff+2005, Yuan+2005, MOTIVATION Belmont+2008, R / I L A C I P T O V / U / Y A R X - Zdziarski+2012,2014, RADIO Pepe+2015, … OPTICAL/UV
a BH Xray Binary example SHOCK JET BREAK ACCELERATION REGION Romero+2003, X-RAYS Markoff+2005, Yuan+2005, MOTIVATION Belmont+2008, R / I L A C I P T O V / U / Y A R X - Zdziarski+2012,2014, RADIO Pepe+2015, … OPTICAL/UV …but even with more sophisticated radiation modelling, we still have major issues with DEGENERACY between classes of models! Connors et al. 2017
a BH Xray Binary example SHOCK JET BREAK ACCELERATION REGION Romero+2003, X-RAYS Markoff+2005, Yuan+2005, MOTIVATION Belmont+2008, R / I L A C I P T O V / U / Y A R X - Zdziarski+2012,2014, RADIO Pepe+2015, … OPTICAL/UV …but even with more sophisticated radiation modelling, we still have major issues with DEGENERACY between classes of models! Connors,.., CC, et al. 2017, Ceccobello et al. 2018, Crumley, CC, et al. 2017, Ceccobello et al. in prep. Lucchini et al. 2019, Lucchini,…,CC, at al. in prep, Kantzas,…,CC, et al. in prep .
IN A MHD MODEL OF AN OUTFLOW THE FORCE BALANCE ALONG… LAUNCHING THE POLOIDAL DIRECTION ACCELERATION z COLLIMATION THE NORMAL DIRECTION THEORY THEORY That is a streamline ☜ it’s the path where the matter flows ^ ^ n p ⨀ ^ 𝜚 𝜜
IN A MHD MODEL OF AN OUTFLOW THE FORCE BALANCE ALONG… LAUNCHING THE POLOIDAL DIRECTION ACCELERATION z COLLIMATION THE NORMAL DIRECTION ⚠ THEORY SINGULAR SURFACES THEORY FAST Parker HD stellar wind model ⚠ Sonic Point ALFVEN ⚠ SLOW 𝜜
TO KEEP THE COMPUTATIONAL TIME SHORT WE NEED TO MAKE SOME APPROXIMATIONS… Blandford & Payne 1982 SELF-SIMILARITY = STREAMLINES DON’T CROSS! THEORY THEORY (modified) 🚹 FAST Vlahakis et al (2000) radial self-similar non-relativistic MHD jet with gravity Polko, Meier, Markoff (2014) 🚹 ALFVEN radial self-similar relativistic 🚹 (modified) MHD jet with gravity SLOW
MFP? Alfven MSP? M 2 integrating TOWARDS the singularities METHOD θ OLD APPROACH
MFP? Alfven MSP? M 2 integrating TOWARDS the singularities METHOD θ OLD APPROACH NEW APPROACH M 2 MFP AP MSP integrating AWAY from the singularities ∆ 1 ∆ 2 Ceccobello et al. 2018 (REL), Ceccobello et al, in prep (NR)
A zoo of jet solutions 2 2 1 1 y 0 y 0 -1 -1 RESULTS -2 -2 -2 -1 0 1 2 -2 -1 0 1 2 x x LIGHT JETS HEAVY JETS COLD(EST), HEAVY COLD, LIGHT HOT, LIGHT HOT(TEST), HEAVY
E VOLVING JET BREAK FREQUENCY DETECTED IN XRB MAXI J 1836-194 Russell et al. 2014 �� � ���� ��������� APPLICATIONS 2011 Sep 03 (Hard) 2011 Sep 26 (HIMS) 2011 Oct 12 (Hard) ��� ����� �� ��� �� � � 2011 Oct 27 (Hard) 10 − 1 �� � Flux density (Jy) 10 − 2 �� � Sep 26 Oct 12 Oct 27 10 − 3 Sep 03 �� � 10 10 10 11 10 12 10 13 10 14 10 15 Frequency (Hz) �� � �� � �� � �� � �� � �� � �� � �� � ��� ������ �� ��� �� � � + Lorentz factor, density, magnetic field,…
MOTIVATION We want to model jets from various sources We want a more accurate way to constrain the jet configuration that produces the radiation we see CONCLUSIONS GOAL A “fast” algorithm for an efficient and comprehensive exploration of the parameter space to directly fit the MHD properties of jets Ceccobello et al. 2018, Ceccobello et al. in prep WHAT’S NEXT Applications to relativistic sources, i.e. XRBs and AGN Applications to non-relativistic sources, i.e. PPNe and YSOs Coupling with a radiative code Markoff et al. 2005, Connors,.., CC, et al. 2017, Crumley, CC, et al. 2017, Lucchini et al. 2019, Lucchini,…,CC, at al. in prep, Kantzas,…,CC, et al. in prep.
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