Matches in SemOpenAlex for { <https://semopenalex.org/work/W4308014715> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W4308014715 abstract "Observational searches for intermediate-mass black holes (IMBHs; $10^2 - 10^6$ $M_odot$) include relatively isolated dwarf galaxies. For those that host active galactic nuclei (AGNs), the IMBH nature may be discerned through the accretion - jet activity. We present radio observations of four AGN-hosting dwarf galaxies (which potentially harbor IMBHs). Very large array (VLA) observations indicate steep spectra (indices of $-$0.63 to $-$1.05) between 1.4 and 9 GHz. A comparison with the 9 GHz in-band spectral index however shows a steepening for GH047 and GH158 (implying older/relic emission) and flattening for GH106 and GH163 (implying recent activity). Overlapping emission regions in the VLA 1.4 GHz and our very long baseline array (VLBA) 1.5 GHz observations, and possibly symmetric pc-scale extensions are consistent with recent activity in the latter two. Using the compact VLBA radio luminosity, X-ray luminosity (probing the accretion activity) and the black hole masses, all AGNs are found to lie on the empirical fundamental plane relation. The four AGN are radio quiet with relatively higher Eddington ratios ($0.04 - 0.32$) and resemble the X-ray binaries during spectral state transitions that entail an outflow ejection. Furthermore, the radio to X-ray luminosity ratio $log{R_mathrm{X}}$ of $-3.9$ to $-5.6$ in these four sources support the scenarios including corona mass ejection from accretion disk and wind activity. The growth to kpc-scales likely proceeds along a trajectory similar to young AGNs and peaked spectrum sources. The above complex clues can thus aid in the detection and monitoring of IMBHs in the nearby Universe." @default.
- W4308014715 created "2022-11-07" @default.
- W4308014715 creator A5000558524 @default.
- W4308014715 creator A5004829445 @default.
- W4308014715 creator A5050909682 @default.
- W4308014715 creator A5054184482 @default.
- W4308014715 creator A5063913402 @default.
- W4308014715 creator A5064430071 @default.
- W4308014715 creator A5071642172 @default.
- W4308014715 creator A5089860286 @default.
- W4308014715 date "2022-10-31" @default.
- W4308014715 modified "2023-10-16" @default.
- W4308014715 title "Radio observations of four active galactic nuclei hosting intermediate-mass black hole candidates: studying the outflow activity and evolution" @default.
- W4308014715 doi "https://doi.org/10.48550/arxiv.2211.00050" @default.
- W4308014715 hasPublicationYear "2022" @default.
- W4308014715 type Work @default.
- W4308014715 citedByCount "0" @default.
- W4308014715 crossrefType "posted-content" @default.
- W4308014715 hasAuthorship W4308014715A5000558524 @default.
- W4308014715 hasAuthorship W4308014715A5004829445 @default.
- W4308014715 hasAuthorship W4308014715A5050909682 @default.
- W4308014715 hasAuthorship W4308014715A5054184482 @default.
- W4308014715 hasAuthorship W4308014715A5063913402 @default.
- W4308014715 hasAuthorship W4308014715A5064430071 @default.
- W4308014715 hasAuthorship W4308014715A5071642172 @default.
- W4308014715 hasAuthorship W4308014715A5089860286 @default.
- W4308014715 hasBestOaLocation W43080147151 @default.
- W4308014715 hasConcept C104954878 @default.
- W4308014715 hasConcept C121332964 @default.
- W4308014715 hasConcept C12287442 @default.
- W4308014715 hasConcept C1276947 @default.
- W4308014715 hasConcept C153294291 @default.
- W4308014715 hasConcept C173120059 @default.
- W4308014715 hasConcept C195803813 @default.
- W4308014715 hasConcept C2776401274 @default.
- W4308014715 hasConcept C2776931843 @default.
- W4308014715 hasConcept C31258907 @default.
- W4308014715 hasConcept C41008148 @default.
- W4308014715 hasConcept C42061751 @default.
- W4308014715 hasConcept C43481613 @default.
- W4308014715 hasConcept C44870925 @default.
- W4308014715 hasConcept C4839761 @default.
- W4308014715 hasConcept C50341732 @default.
- W4308014715 hasConcept C74172769 @default.
- W4308014715 hasConcept C86132830 @default.
- W4308014715 hasConcept C89305328 @default.
- W4308014715 hasConcept C98444146 @default.
- W4308014715 hasConceptScore W4308014715C104954878 @default.
- W4308014715 hasConceptScore W4308014715C121332964 @default.
- W4308014715 hasConceptScore W4308014715C12287442 @default.
- W4308014715 hasConceptScore W4308014715C1276947 @default.
- W4308014715 hasConceptScore W4308014715C153294291 @default.
- W4308014715 hasConceptScore W4308014715C173120059 @default.
- W4308014715 hasConceptScore W4308014715C195803813 @default.
- W4308014715 hasConceptScore W4308014715C2776401274 @default.
- W4308014715 hasConceptScore W4308014715C2776931843 @default.
- W4308014715 hasConceptScore W4308014715C31258907 @default.
- W4308014715 hasConceptScore W4308014715C41008148 @default.
- W4308014715 hasConceptScore W4308014715C42061751 @default.
- W4308014715 hasConceptScore W4308014715C43481613 @default.
- W4308014715 hasConceptScore W4308014715C44870925 @default.
- W4308014715 hasConceptScore W4308014715C4839761 @default.
- W4308014715 hasConceptScore W4308014715C50341732 @default.
- W4308014715 hasConceptScore W4308014715C74172769 @default.
- W4308014715 hasConceptScore W4308014715C86132830 @default.
- W4308014715 hasConceptScore W4308014715C89305328 @default.
- W4308014715 hasConceptScore W4308014715C98444146 @default.
- W4308014715 hasLocation W43080147151 @default.
- W4308014715 hasOpenAccess W4308014715 @default.
- W4308014715 hasPrimaryLocation W43080147151 @default.
- W4308014715 hasRelatedWork W1553218229 @default.
- W4308014715 hasRelatedWork W1639843571 @default.
- W4308014715 hasRelatedWork W1972476864 @default.
- W4308014715 hasRelatedWork W1978701186 @default.
- W4308014715 hasRelatedWork W1989453563 @default.
- W4308014715 hasRelatedWork W2090254307 @default.
- W4308014715 hasRelatedWork W2964108310 @default.
- W4308014715 hasRelatedWork W3099474433 @default.
- W4308014715 hasRelatedWork W3103994511 @default.
- W4308014715 hasRelatedWork W3135876369 @default.
- W4308014715 isParatext "false" @default.
- W4308014715 isRetracted "false" @default.
- W4308014715 workType "article" @default.