The K-band Hubble diagram of submillimetre galaxies and hyperluminous galaxies by Serjeant, S, Farrah, D, Geach, J, Takagi, T, Verma, A, Kaviani, A, Fox, M

“…The galaxies so far proved to be hyperluminous may have been biased towards higher AGN bolometric contributions than submillimetre-selected galaxies due to the 60-μm selection of some, so the location on the K-z relation may be related to the presence of the most massive active galactic nucleus. Alternatively, a particular host galaxy mass range may be responsible for both extreme star formation and the most massive active nuclei.…”

A Close Binary Supermassive Black Hole Model for the Galaxy 3C 273 by Alexandr Volvach, Larisa Volvach, Mikhail Larionov

“…The data from the last 60 years on the programs of long-term multi-frequency monitoring of active galactic nucleus (AGN) 3C 273 were analyzed. A model is proposed for finding the parameters of close binary systems (CBSs) from supermassive black holes (SMBHs), including a harmonic analysis of observational data series obtained in the optical and radio ranges. …”
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Infrared Spectral Energy Distribution and Variability of Active Galactic Nuclei: Clues to the Structure of Circumnuclear Material by Jianwei Lyu, George Rieke

“…The active galactic nucleus (AGN) phenomenon results from a supermassive black hole accreting its surrounding gaseous and dusty material. …”
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Galaxy Zoo: dust lane early-type galaxies are tracers of recent, gas-rich minor mergers by Shabala, S, Ting, Y, Kaviraj, S, Lintott, C, Crockett, R, Silk, J, Sarzi, M, Schawinski, K, Bamford, S, Edmondson, E

“…We use optical and radio data to examine the nature of active galactic nucleus (AGN) activity in these objects, and compare these with a carefully constructed control sample. …”

Resolving the stellar populations in a z=4 lensed galaxy by Bunker, A, Moustakas, L, Davis, M

“…We show that this line emission is most probably powered by star formation in neighboring H II regions and that the z = 4 system is unlikely to be an active galactic nucleus.…”

Constraints on Galileons from the positions of supermassive black holes by Bartlett, DJ, Desmond, H, Ferreira, P

“…Using the measured offset between the optical centre and active galactic nucleus of 1916 galaxies from the literature, propagating uncertainties in the input quantities and marginalising over an empirical noise model describing astrophysical and observational noise, we constrain the Galileon coupling to be $\Delta G / G_{\rm N} < 0.16$ at $1\sigma$ confidence for Galileons with crossover scale $r_{\rm C} \gtrsim H_0^{-1}$.…”

Consistency of Hitomi, XMM-Newton, and Chandra 3.5 keV data from Perseus by Conlon, J, Day, F, Jennings, N, Krippendorf, S, Rummel, M

“…The Hitomi spectrum - which involves the sum of diffuse cluster emission and the pointlike central active galactic nucleus (AGN) - does not show any excess at E∼3.5 keV, giving an apparent inconsistency with previous observations of excess diffuse emission. …”

On the depletion and accretion timescales of cold gas in local early-type galaxies by Davis, T, Bureau, M

“…To reproduce that distribution, both fast gas depletion (tdep ≲ 108 yr; e.g. more efficient star formation) and fast gas destruction (e.g. by active galactic nucleus feedback) can be invoked, but both also require a high rate of gas-rich mergers (>1 Gyr−1). …”

Multi-dimensional modelling of X-ray spectra for AGN accretion-disk outflows III: application to a hydrodynamical simulation by Sim, SA, Proga, D, Miller, L, Long, K, Turner, T

“…We perform multi-dimensional radiative transfer simulations to compute spectra for a hydrodynamical simulation of a line-driven accretion disk wind from an active galactic nucleus. The synthetic spectra confirm expectations from parameterized models that a disk wind can imprint a wide variety of spectroscopic signatures including narrow absorption lines, broad emission lines and a Compton hump. …”

X-ray sources population in NGC 1559 by Nurnabilah Nazri, Adlyka Annuar

“…We did not detect any X-ray nuclear point source in the galaxy, suggesting that NGC 1559 does not host an active galactic nucleus. This is supported by its HII optical spectral classification and our infrared analysis using WISE.…”
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Simulations of Precessing Jets and the Formation of X-shaped Radio Galaxies by Chris Nolting, Jay Ball, Tri M. Nguyen

“…Jet precession is sometimes invoked to explain asymmetries in radio galaxy (RG) jets and “X/S/Z-shaped” RGs, caused by the presence of a binary black hole companion to the source active galactic nucleus or by accretion instabilities. We present a series of simulations of RG jet precession to examine how these sources would evolve over time, including a passive distribution of cosmic-ray electrons so we can model radio synchrotron emissions and create synthetic radio maps of the sources. …”
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Multiwavelength follow-up of a rare IceCube neutrino multiplet

“…No likely electromagnetic counterpart was detected, and we discuss the implications of these constraints on candidate neutrino sources such as gamma-ray bursts, core-collapse supernovae and active galactic nucleus flares. This study illustrates the potential of and challenges for future follow-up campaigns.…”
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Using H α Filaments to Probe Active Galactic Nuclei Feedback in Galaxy Clusters by Qiu, Yu, Bogdanović, Tamara, Li, Yuan, McDonald, Michael A.

“…Recent observations of giant ellipticals and brightest cluster galaxies (BCGs) provide tentative evidence for a correlation between the luminosity of the Hμ-emitting gas filaments and the strength of feedback associated with the active galactic nucleus (AGN). Motivated by this, we use 3D radiation-hydrodynamic simulations with the code Enzo to examine and quantify the relationship between the observable properties of the Hμ filaments and the kinetic and radiative feedback from supermassive black holes in BCGs. …”
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The extraordinary radio galaxy MRC B1221-423: probing deeper at radio and optical wavelengths by Johnston, H, Broderick, J, Cotter, G, Morganti, R, Hunstead, R

“…We find strong evidence of interaction between the active galactic nucleus (AGN) and its environment. The radio morphology is highly distorted, showing a dramatic interaction between the radio jet and the host galaxy, with the jet being turned almost back on itself. …”

Galaxies: The short wavelength view by Lutz, D, Genzel, R, Sturm, E, Rigopoulou, D, Tran, D, Moorwood, A, Spoon, H, Forster-Schreiber, N, Thornley, M, Alexander, T, Sternberg, A

“…They are absent close to an active galactic nucleus but can be strong on larger scales of the AGN host, in particular if there is intense circumnuclear star formation. …”

Multidimensional modelling of X-ray spectra for AGN accretion disc outflows - III. Application to a hydrodynamical simulation by Sim, SA, Proga, D, Miller, L, Long, K, Turner, T

“…We perform multidimensional radiative transfer simulations to compute spectra for a hydrodynamical simulation of a line-driven accretion disc wind from an active galactic nucleus. The synthetic spectra confirm expectations from parametrized models that a disc wind can imprint a wide variety of spectroscopic signatures including narrow absorption lines, broad emission lines and a Compton hump. …”

The impact of AGN on stellar kinematics and orbits in simulated massive galaxies by Frigo, M, Naab, T, Hirschmann, M, Choi, E, Somerville, R, Krajnovic, D, Davé, R, Cappellari, M

“…We present a series of 10 × 2 cosmological zoom simulations of the formation of massive galaxies with and without a model for active galactic nucleus (AGN) feedback. Differences in stellar population and kinematic properties are evaluated by constructing mock integral field unit maps. …”

Galaxy Zoo: Dust lane early-type galaxies are tracers of recent, gas-rich minor mergers by Shabala, S, Ting, Y, Kaviraj, S, Lintott, C, Crockett, R, Silk, J, Sarzi, M, Schawinski, K, Bamford, S, Edmondson, E

“…We use optical and radio data to examine the nature of active galactic nucleus (AGN) activity in these objects, and compare these with a carefully constructed control sample. …”

Cold dust and young starbursts: spectral energy distributions of Herschel SPIRE sources from the HerMES survey by Rowan-Robinson, M, Roseboom, I, Vaccari, M, Amblard, A, Arumugam, V, Auld, R, Aussel, H, Babbedge, T, Blain, A, Bock, J, Boselli, A, Brisbin, D, Buat, V, Burgarella, D, Castro-Rodriguez, N, Cava, A, Chanial, P, Clements, D, Conley, A, Conversi, L, Cooray, A, Dowell, C, Dwek, E, Dye, S, Eales, S

“…We explore whether existing models for starbursts, quiescent star-forming galaxies and active galactic nucleus dust tori are able to model the full range of SEDs measured with Herschel. …”

Serendipitously detected galaxies in the Hubble Deep Field by Dawson, S, Stern, D, Bunker, A, Spinrad, H, Dey, A

“…Finally, we estimate the line-of-sight velocity dispersion and the corresponding mass and expected X-ray luminosity of the galaxy cluster, we present strong arguments for interpreting the Chandra source as an obscured active galactic nucleus, and we discuss in detail the spectrum of one of the candidate z ≳ 5 Lyα emitters.…”