Correlation between the gamma-ray and the radio emissions

Fan, J. H.; Adam, Gilles; GZ, Xie; Cao, SL; Lin, RG; Copin, Y.

doi:10.48550/arxiv.astro-ph/9809011

Cited by 1 publication

(2 citation statements)

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“…Many previous studies have examined the correlation between the γ-ray and and other low energy bands for blazars (Dondi & Ghisellini 1995;Fan et al 1998;Xie et al 1998;Yang & Fan 2005;Lin & Fan 2016;Massaro & D'Abrusco 2016;Liodakis et al 2018;Zhang & Fan 2018). Xie et al (1998) found that the near-infrared band and the γ-ray band correlation was the strongest through comparison with other bands, and the variability behavior of the γ-ray and the near-IR fluxes was consistent.…”

Section: Luminosity Versus Luminositymentioning

confidence: 94%

“…Besides, the γ-ray emission can also be produced by various hadronic models, e.g., the γ-ray emission is produced by accelerated protons interacting with ambient gas or low-frequency radiation (Aharonian 2000;Deng et al 2022). One can provide important insights into the soft photons inducing the observed γ-ray by exploring the correlation between the γ-ray emission and the low-energy (radio to X-ray) emission (Ghisellini & Maraschi 1989;Dondi & Ghisellini 1995;Xie et al 1997;Fan et al 1998;Ackermann et al 2011;Liodakis et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Comparison Between TeV and Non-TeV Fermi-detected BL Lacertae Objects

Liang,

Zeng,

Chen

et al. 2023

PASP

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In this paper, we compiled a sample of 410 Fermi-detected BL Lacs, including 42 TeV-detected BL Lacs (TBLs) and 368 non-TeV-detected BL Lacs (non-TBLs) with corresponding mid-infrared (mid-IR), TeV and Fermi γ-ray data, and calculated some important parameters including monochromatic luminosities (mid-IR, GeV and TeV bands) and mid-IR spectral indices. Based on those parameters, we discussed the relationship between the mid-IR and the TeV bands and that between the mid-IR and the GeV bands. Main conclusions are drawn as follows: (1) In the color–color and color–magnitude diagrams, our sample forms a WISE-Gamma Strip in the [3.4]–[4.6]–[12] μm color–color diagram, and TBLs occupy the brighter region than the non-TBLs for the similar color-index in the color-magnititue diagram; (2) The mid-IR luminosity of the TBLs is on average higher than that of non-TBLs, while the average mid-IR spectral index of TBLs is smaller than the non-TBLs, suggesting that TBLs are brighter and hold a more flat spectrum than do the non-TBLs in the mid-IR band. Besides, HBLs have a more flat mid-IR spectrum than LBLs and IBLs; (3) The mid-IR luminosity is positively correlated with the GeV luminosity and the intrinsic TeV luminosity. A positive correlation exists between the mid-IR spectral index and the observed TeV spectral index, which is consistent with the expectations of the synchrotron self-Compton mechanism. We suggest that the HBLs with extreme relativistic electrons might scatter the mid-IR photons up to the TeV band.

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