Spins of SMBHs in Distant Low Luminosity AGNs
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DOI: 10.1088/1674-4527/ade9e9
Abstract: We estimated radiative efficiency, spin and supermassive black hole (SMBH) mass values for sample of 33 distant low luminosity active galactic nuclei (AGNs). The distribution of the estimated spin values (majority of objects have a… read more here.
Keywords: low luminosity; distant low; smbhs distant; spin ... See more keywords
Gamma-ray observations of low-luminosity active galactic nuclei
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa083
Abstract: The majority of the activity around nearby (z ~ 0) supermassive black holes is found in low-luminosity active galactic nuclei (LLAGN), the most of them being classified as low ionization nuclear emission regions. Although these… read more here.
Keywords: gamma ray; active galactic; luminosity active; gamma ... See more keywords
Constraining X-ray reflection in the low-luminosity AGN NGC 3718 using NuSTAR and XMM–Newton
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DOI: 10.1093/mnras/staa1762
Abstract: One distinctive feature of low-luminosity active galactic nuclei (LLAGN) is the relatively weak reflection features they may display in the X-ray spectrum, which can result from the disappearance of the torus with decreasing accretion rates.… read more here.
Keywords: xmm newton; reflection; ngc 3718; low luminosity ... See more keywords
SN 2022acko: a low-luminosity SNe IIP with signs of early circumstellar interaction
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DOI: 10.1093/mnras/staf893
Abstract: We present optical-ultraviolet photometry and optical spectra for the type II supernova (SN) 2022acko. The spectroscopic observations span phases from ∼ 1.5 to ∼ 60 days after the explosion, while the light curve was observed up… read more here.
Keywords: low luminosity; circumstellar interaction; emission; 2022acko low ... See more keywords
A decades-long fast-rise-exponential-decay flare in low-luminosity AGN NGC 7213
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DOI: 10.1093/mnras/stx3259
Abstract: We analysed the four-decades-long X-ray light curve of the low-luminosity active galactic nucleus (LLAGN) NGC 7213 and discovered a fast-rise-exponential-decay (FRED) pattern, i.e. the X-ray luminosity increased by a factor of $\approx 4$ within 200d,… read more here.
Keywords: decades long; fast rise; luminosity; ngc 7213 ... See more keywords
Type II supernovae in low-luminosity host galaxies
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DOI: 10.1093/mnras/sty1581
Abstract: We present an analysis of a new sample of type II core-collapse supernovae (SNe II) occurring within low-luminosity galaxies, comparing these with a sample of events in brighter hosts. Our analysis is performed comparing SN… read more here.
Keywords: host galaxies; type supernovae; luminosity; host ... See more keywords
High-resolution observations of low-luminosity gigahertz-peaked spectrum and compact steep-spectrum sources
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DOI: 10.1093/mnras/sty564
Abstract: We present Very Long Baseline Interferometry observations of a faint and low-luminosity ($L_{\rm 1.4 GHz} < 10^{27}~\mbox{W Hz}^{-1}$) Gigahertz-Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sample. We select eight sources from deep radio observations… read more here.
Keywords: radio; luminosity; peaked spectrum; spectrum ... See more keywords
Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115
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DOI: 10.1093/mnras/stz3474
Abstract: NGC 3115 is known as the low-luminosity active galactic nucleus that hosts the nearest (z ∼ 0.002) billion-solar-mass supermassive black hole (∼1.5 × 109 M⊙). Its Bondi radius rB (∼3.6 arcsec) can be readily resolved with Chandra, which… read more here.
Keywords: active galactic; radius; gas; luminosity active ... See more keywords
From radio-quiet to radio-silent: low-luminosity Seyfert radio cores
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DOI: 10.1093/mnras/stz595
Abstract: A strong effort has been devoted to understand the physical origin of radio emission from low-luminosity AGN (LLAGN), but a comprehensive picture is still missing. We used high-resolution ($\le$1 arcsec), multi-frequency (1.5, 5.5, 9 and… read more here.
Keywords: radio emission; radio; radio quiet; low luminosity ... See more keywords
A compact jet at the infrared heart of the prototypical low-luminosity AGN in NGC 1052
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DOI: 10.1093/mnras/stz716
Abstract: The feeble radiative efficiency characteristic of Low-Luminosity Active Galactic Nuclei (LLAGNs) is ascribed to a sub-Eddington accretion rate, typically at log (Lbol/Ledd) ≲ −3. At the finest angular resolutions that are attainable nowadays using mid-infrared (mid-IR)… read more here.
Keywords: ngc 1052; continuum; compact jet; low luminosity ... See more keywords
Unveiling the Dynamics in Galaxy Clusters: The Hidden Role of Low-Luminosity Galaxies in Coma
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DOI: 10.3390/universe11030082
Abstract: In this work, we study the Coma cluster, one of the richest and most well-known systems at low redshifts, to explore the importance of low-flux objects in the identification of cluster substructures. In addition, we… read more here.
Keywords: role; luminosity galaxies; low luminosity; galaxy clusters ... See more keywords