IHEP OpenIR
Dynamic changes of emitting electron distribution in the jet of 3C 279: signatures of acceleration and cooling
Yan DH(闫大海); He JJ(贺健健); Liao JY(廖进元); Zhang SN(张双南); Yan, DH; He, JJ; Liao, JY; Zhang, L; Zhang, SN
2016
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
EISSN1365-2966
Volume456Issue:2Pages:2173-2182
SubtypeArticle
AbstractWe study the dynamic changes of electron energy distribution (EED) through systematically analysing the quasi-simultaneous spectral energy distributions (SEDs) of the flat spectrum radio quasar 3C 279 in different states. With Markov chain Monte Carlo technique we model fourteen SEDs of 3C 279 using a leptonic model with a three-parameter log-parabola EED. The 14 SEDs can be satisfactorily fitted with the one-zone leptonic model. The observed gamma rays in 13 states are attributed to Compton scattering of external infrared photons from a surrounding dusty torus. The curved gamma ray spectrum observed during 2014 2-8 April is well explained by the external Compton of dust radiation. It is found that there is a clear positive correlation between the curvature parameter b of the EED and the electron peak energy gamma(pk)'. No significant correlation between b and the synchrotron peak frequency.s is found, due to the varied product of Doppler factor and fluid magnetic field from state to state. We interpret the correlation of b - gamma(pk)' in a stochastic acceleration scenario. This positive correlation is in agreement with the prediction in the stage when the balance between acceleration and radiative cooling of the electrons is nearly established in the case of the turbulence spectral index q = 2.
Keywordradiation mechanisms: non-thermal galaxies: jets gamma rays: galaxies
DOI10.1093/mnras/stv2829
Indexed BySCI ; ADS
Language英语
WOS IDWOS:000372264200075
ADS Bibcode2016MNRAS.456.2173Y
ADS URLhttps://ui.adsabs.harvard.edu/abs/2016MNRAS.456.2173Y
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2016MNRAS.456.2173Y/citations
inspireid1397131
Citation statistics
Cited Times:9 [INSPIRE]
Cited Times:12 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/248049
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Yan DH,He JJ,Liao JY,et al. Dynamic changes of emitting electron distribution in the jet of 3C 279: signatures of acceleration and cooling[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(2):2173-2182.
APA 闫大海.,贺健健.,廖进元.,张双南.,Yan, DH.,...&Zhang, SN.(2016).Dynamic changes of emitting electron distribution in the jet of 3C 279: signatures of acceleration and cooling.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(2),2173-2182.
MLA 闫大海,et al."Dynamic changes of emitting electron distribution in the jet of 3C 279: signatures of acceleration and cooling".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.2(2016):2173-2182.
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