English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In this paper, we collect radio and X-ray observations for mostFanaroff-Riley I (FRI) radio galaxies in the Zirbel-Baum radio galaxy sample,and investigate the distribution of the radio-to-X-ray effective spectralindex, $\alpha_{rx}$, to test the unified scheme of BL Lac objects and FRIradio galaxies. It is found that the range of $\alpha_{rx}$ for FRI radiogalaxies is almost the same as that for BL Lac objects, that the distributionof $\alpha_{rx}$ probably peaks at the same position as BL Lac objects, andthat the distribution of $\alpha_{rx}$ for FRIs is similar to that for BL Lacobjects. These suggest that there exist two subclasses of FRI radio galaxies:one is HBL-like, and the other is LBL-like, corresponding to high-energy-peaked(HBL) and low--energy-peaked (LBL) BL Lac objects, respectively. This result isconsistent with previous VLA observations, and supports the unified scheme ofBL Lac objects and FRI radio galaxies.Comment: 5 pages, 1 figur

New Evidence for the Unified Scheme of BL Lacertae Objects and FR I Radio Galaxies