Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Asmus, Daniel"'
Autor:
Boorman, Peter G., Gandhi, Poshak, Buchner, Johannes, Stern, Daniel, Ricci, Claudio, Baloković, Mislav, Asmus, Daniel, Harrison, Fiona A., Svoboda, Jiří, Greenwell, Claire, Koss, Michael, Alexander, David M., Annuar, Adlyka, Bauer, Franz, Brandt, William N., Brightman, Murray, Panessa, Francesca, Chen, Chien-Ting J., Farrah, Duncan, Forster, Karl, Grefenstette, Brian, Hönig, Sebastian F., Hill, Adam B., Kammoun, Elias, Lansbury, George, Lanz, Lauranne, LaMassa, Stephanie, Madsen, Kristin, Marchesi, Stefano, Middleton, Matthew, Mingo, Beatriz, Parker, Michael L., Treister, Ezequiel, Ueda, Yoshihiro, Urry, C. Megan, Zappacosta, Luca
Hard X-ray-selected samples of Active Galactic Nuclei (AGN) provide one of the cleanest views of supermassive black hole accretion, but are biased against objects obscured by Compton-thick gas column densities of $N_{\rm H}$ $>$ 10$^{24}$ cm$^{-2}$.
Externí odkaz:
http://arxiv.org/abs/2410.07339
Autor:
Isbell, Jacob W., Pott, Jörg-Uwe, Meisenheimer, Klaus, Stalevski, Marko, Tristram, Konrad R. W., Leftley, James, Asmus, Daniel, Weigelt, Gerd, Rosas, Violeta Gámez, Petrov, Romain, Jaffe, Walter, Hofmann, Karl-Heinz, Henning, Thomas, Lopez, Bruno
In this paper we present the first-ever $L$- and $M$-band interferometric observations of Circinus, building upon a recent $N$-band analysis. We used these observations to reconstruct images and fit Gaussian models to the $L$ and $M$ bands. Our findi
Externí odkaz:
http://arxiv.org/abs/2309.07613
Autor:
Stalevski, Marko, González-Gaitán, Santiago, Savić, Đorđe, Kishimoto, Makoto, Mourão, Ana, Lopez-Rodriguez, Enrique, Asmus, Daniel
We present polarimetric maps of the Circinus galaxy nucleus in the $BVRI$ bands, obtained with VLT/FORS2. Circinus is the closest Seyfert 2 galaxy and harbours an archetypal obscured active galactic nucleus (AGN). Recent high angular resolution imagi
Externí odkaz:
http://arxiv.org/abs/2212.10589
Autor:
Mejıa-Restrepo, Julian E., Trakhtenbrot, Benny, Koss, Michael J., Oh, Kyuseok, Brok, Jakob den, Stern, Daniel, Powell, Meredith C., Ricci, Federica, Caglar, Turgay, Ricci, Claudio, Bauer, Franz E., Treister, Ezequiel, Harrison, Fiona A., Urry, C. M., Ananna, Tonima Tasnim, Asmus, Daniel, Assef, Roberto J., Bar, Rudolf E., Bessiere, Patricia S., Burtscher, Leonard, Ichikawa, Kohei, Kakkad, Darshan, Kamraj, Nikita, Mushotzky, Richard, Privon, George C., Rojas, Alejandra F., Sani, Eleonora, Schawinski, Kevin, Veilleux, Sylvain
We present measurements of broad emission lines and virial estimates of supermassive black hole masses ($M_{BH}$) for a large sample of ultra-hard X-ray selected active galactic nuclei (AGNs) as part of the second data release of the BAT AGN Spectros
Externí odkaz:
http://arxiv.org/abs/2204.05321
Autor:
Leftley, James H., Tristram, Konrad R. W., Hönig, Sebastian F., Asmus, Daniel, Kishimoto, Makoto, Gandhi, Poshak
Infrared interferometry has fuelled a paradigm shift in our understanding of the dusty structure in the central parsecs of Active Galactic Nuclei (AGN). The dust is now thought to comprise of a hot ($\sim1000\,$K) equatorial disk, some of which is bl
Externí odkaz:
http://arxiv.org/abs/2103.07482
Autor:
Pfeifle, Ryan W., Ricci, Claudio, Boorman, Peter G., Stalevski, Marko, Asmus, Daniel, Trakhtenbrot, Benny, Koss, Michael J., Stern, Daniel, Ricci, Federica, Satyapal, Shobita, Ichikawa, Kohei, Rosario, David J., Caglar, Turgay, Treister, Ezequiel, Powell, Meredith, Oh, Kyuseok, Urry, C. Megan, Harrison, Fiona
In this study, we use the SWIFT/BAT AGN sample, which has received extensive multiwavelength follow-up analysis as a result of the BAT AGN Spectroscopic Survey (BASS), to develop a diagnostic for nuclear obscuration by examining the relationship betw
Externí odkaz:
http://arxiv.org/abs/2102.04412
Autor:
Isbell, Jacob W., Burtscher, Leonard, Asmus, Daniel, Pott, Jörg-Uwe, Couzy, Paul, Stalevski, Marko, Rosas, Violeta Gámez, Meisenheimer, Klaus
We present the largest currently existing subarcsecond 3-5 $\mu$m atlas of 119 local ($z < 0.3$) active galactic nuclei (AGN). This atlas includes AGN of 5 subtypes: 22 are Seyfert 1; 5 are intermediate Seyferts; 46 are Seyfert 2; 26 are LINERs; and
Externí odkaz:
http://arxiv.org/abs/2101.07006
Autor:
Leftley, James H., Hönig, Sebastian F., Asmus, Daniel, Tristram, Konrad R. W., Gandhi, Poshak, Kishimoto, Makoto, Venanzi, Marta, Williamson, David J.
Infrared interferometry of local AGN has revealed a warm (~300K-400K) polar dust structure that cannot be trivially explained by the putative dust torus of the unified model. This led to the development of the disk+wind scenario which comprises of a
Externí odkaz:
http://arxiv.org/abs/1910.00600
Autor:
Asmus, Daniel
The key ingredient of active galactic nuclei (AGN) unification, the dusty obscuring torus was so far held responsible for the observed mid-infrared (MIR) emission of AGN. However, the best studied objects with VLTI/MIDI show that instead a polar dust
Externí odkaz:
http://arxiv.org/abs/1908.03552
We present thermal infrared observations of the active asteroid (and Geminid meteoroid stream parent) 3200 Phaethon using the Very Large Telescope. The images, at 10.7 micron wavelength, were taken with Phaethon at its closest approach to Earth (sepa
Externí odkaz:
http://arxiv.org/abs/1903.05034