DISTRIBUTIONS OF GAMMA-RAY BURSTS AND BLAZARS IN THELp-Ep-PLANE AND POSSIBLE IMPLICATIONS FOR THEIR RADIATION PHYSICS

Lyu, Fen; Liang, En‐Wei; Liang, Yun-Feng; Wu, Xue-Feng; Zhang, Jin; Sun, Xiao-Na; Lu, Rui-Jing; Zhang, Bing

doi:10.1088/0004-637x/793/1/36

Cited by 21 publications

(22 citation statements)

References 69 publications

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“…The results are consistent with the reported results of Xie et al (2003), who found that HBLs and LBLs locate in different regions in the α ox − α xγ plane, but LBLs and FSRQs occupy the same region in α ox − α xγ plane. In addition, our results also agree with that reported by Fan et al (2012) and Lyu et al (2014).…”

Section: Diagram Of α Rx Versus α Rosupporting

confidence: 93%

“…Some literatures show that HBLs have different properties from FSRQs, but LBLs are similar to FSRQs (e.g. Chen et al, 2013;Fan et al, 2012;Li et al, 2010;Lyu et al, 2014). However, Li et al (2010) and Chen et al (2013) also found that their whole sample suggest the unified scheme of blazars.…”

Section: Introductionmentioning

confidence: 96%

“…Nieppola et al (2006) found that there is a negative correlation between the luminosity and the synchrotron peak frequency ν peak at radio and optical band, whereas the correlation turns slightly positive in X-ray (Nieppola et al, 2006). Fan et al (2012) and Lyu et al (2014) found that HBLs have different properties from LBLs. Yan et al (2014) found that the one-zone synchrotron self-Compton (SSC) model can successfully fit the SEDs of HBLs, but fails to explain the SEDs of LBLs.…”

Section: Introductionmentioning

confidence: 99%

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The broadband spectral energy distributions of SDSS blazars

Chen

Jiang

et al. 2015

Res. Astron. Astrophys.

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We compiled the radio, optical, and X-ray data of blazars from the Sloan Digital Sky Survey (SDSS) database, and presented the distribution of luminosities and broad band spectral indices. The distribution of luminosities shows that the averaged luminosity of flat-spectral radio quasars (FSRQs) is larger than that of BL Lacs objects. On the other hand, the broad band spectral energy distribution reveals that FSRQs and low energy peaked BL Lac objects (LBLs) objects have similar spectral properties, but high energy peaked BL Lac objects (HBLs) have a distinct spectral property. This may be due to that different subclasses of blazars have different intrinsic environments and are at different cooling levels. Even so, a unified scheme also is revealed from the color-color diagram, which hints that there are similar physical processes operating in all objects under a range of intrinsic physical conditions or beaming parameter.

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Section: Diagram Of α Rx Versus α Rosupporting

confidence: 93%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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The broadband spectral energy distributions of SDSS blazars

Chen

Jiang

et al. 2015

Res. Astron. Astrophys.

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“…Their prompt gamma-ray emission may be from internal shocks in an erratic, unsteady, relativistic fireball (e.g., Rees & Mészáros 1992;Mészáros & Rees 1993;Rees & Mészáros 1994), a dissipative photosphere (e.g., Beloborodov 2010; Vurm et al 2011;Giannios 2008;Ioka 2010), or a Poynting-flux-dominated outflow ( Zhang & Yan 2011 and reference therein). The broad band observations with the Fermi mission sharpen debating on the radiation mechanisms and the composition of the GRB jets (e.g., Abdo et al 2009;Zhang et al 2009Zhang et al 2013;Lyu et al 2014). …”

Section: Introductionmentioning

confidence: 99%

GRB 110530a: Peculiar Broad Bump and Delayed Plateau in Early Optical Afterglows

Zhong

Xin

Liang

et al. 2016

ApJ

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We report our very early optical observations of GRB 110530A and investigate its jet properties together with its X-ray afterglow data. A peculiar broad onset bump followed by a plateau is observed in its early R band afterglow lightcurve. The optical data in the other bands and the X-ray data are well consistent with the temporal feature of the R band lightcurve. Our joint spectral fits of the optical and X-ray data show that they are in the same regime, with a photon index of ∼ 1.70. The optical and X-ray afterglow lightcurves are well fitted with the standard external shock model by considering a delayed energy injection component. Based on our modeling results, we find that the radiative efficiency of the GRB jet is ∼ 1% and the magnetization parameter of the afterglow jet is < 0.04 with the derived extremely low ǫ B (the fraction of shock energy to magnetic field) of (1.64 ± 0.25) × 10 −6 . These results indicate that the jet may be matter dominated. Discussion on delayed energy injection from accretion of late fall-back material of its pre-supernova star is also presented.

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“…GRBs, as bright lighthouses in the distant universe, are ideal tools to probe the properties of the early universe . There are some similar properties between GRBs and AGNs, such as the variability property (Wu et al 2016), and radiation mechanism (Lyu et al 2014). However, whether GRBs follow the fundamental plane is unknown.…”

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confidence: 98%

A universal scaling law of black hole activity including gamma-ray bursts

Wang

Dai

2017

Monthly Notices of the Royal Astronomical Society

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Previous works show that a correlation among radio luminosity, X-ray luminosity, and black hole (BH) mass from stellar-mass BHs in X-ray binaries to supermassive BHs in active galactic nuclei (AGNs), which leads to the so-called fundamental plane of BH activity. However, there are two competing explanations for this fundamental plane, including the jet-dominated model and the disk-jet model. Thus, the physical origin of this fundamental plane remains unknown. In this paper, we show that the X-ray luminosities, radio luminosities and BH masses of gamma-ray bursts (GRBs) and M82 X-1 also show a similar distribution. The universal scaling law among stellar-mass, intermediate and supermassive BH systems, together with the fact that radio and X-ray emission of GRBs originates from relativistic jets, reveals that the fundamental plane of BH activity is controlled by a jet, i.e., the radio and X-ray emission is mainly from the jet. Our work also suggests that the jets are scale-invariant with respect to the BH mass.

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DISTRIBUTIONS OF GAMMA-RAY BURSTS AND BLAZARS IN THEL_p-E_p-PLANE AND POSSIBLE IMPLICATIONS FOR THEIR RADIATION PHYSICS

Cited by 21 publications

References 69 publications

The broadband spectral energy distributions of SDSS blazars

The broadband spectral energy distributions of SDSS blazars

GRB 110530a: Peculiar Broad Bump and Delayed Plateau in Early Optical Afterglows

A universal scaling law of black hole activity including gamma-ray bursts

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