Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Tristram Konrad R. W."'
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:
Izumi, Takuma, Wada, Keiichi, Imanishi, Masatoshi, Nakanishi, Kouichiro, Kohno, Kotaro, Kudoh, Yuki, Kawamuro, Taiki, Baba, Shunsuke, Matsumoto, Naoki, Fujita, Yutaka, Tristram, Konrad R. W.
Publikováno v:
Science, Volume 382, Year 2023, Issue 6670, Pages 554-559
Active galaxies contain a supermassive black hole at their center, which grows by accreting matter from the surrounding galaxy. The accretion process in the central ~10 parsecs has not been directly resolved in previous observations, due to the small
Externí odkaz:
http://arxiv.org/abs/2305.03993
Autor:
Tristram, Konrad R. W., Impellizzeri, C. M. Violette, Zhang, Zhi-Yu, Villard, Eric, Henkel, Christian, Viti, Serena, Burtscher, Leonard, Combes, Françoise, García-Burillo, Santiago, Martín, Sergio, Meisenheimer, Klaus, van der Werf, Paul P.
Publikováno v:
A&A 664, A142 (2022)
We aim to shed light on the physical properties and kinematics of the molecular material in the nucleus of one of the closest type 2 active galaxies. To this end, we obtained high angular resolution ALMA observations of the nucleus of the Circinus ga
Externí odkaz:
http://arxiv.org/abs/2206.00782
Autor:
Isbell, Jacob W., Meisenheimer, Klaus, Pott, Jörg-Uwe, Stalevski, Marko, Tristram, Konrad R. W., Sanchez-Bermudez, Joel, Hofmann, Karl-Heinz, Rosas, Violeta Gámez, Jaffe, Walter, Burtscher, Leonard, Leftley, James, Petrov, Romain, Lopez, Bruno, Henning, Thomas, Weigelt, Gerd, Allouche, Fatme, Berio, Philippe, Bettonvil, Felix, Cruzalebes, Pierre, Dominik, Carsten, Heininger, Matthias, Hogerheijde, Michiel, Lagarde, Stéphane, Lehmitz, Michael, Matter, Alexis, Millour, Florentin, Robbe-Dubois, Sylvie, Schertl, Dieter, van Boekel, Roy, Varga, Josef, Woillez, Julien
Publikováno v:
A&A 663, A35 (2022)
Active galactic nuclei play a key role in the evolution of galaxies, but their inner workings and physical connection to the host are poorly understood due to a lack of angular resolution. Infrared interferometry makes it possible to resolve the circ
Externí odkaz:
http://arxiv.org/abs/2205.01575
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:
Burtscher, Leonard, Politopoulos, Ioannis, Fernández-Acosta, Sergio, Agocs, Tibor, Ancker, Mario van den, van Boekel, Roy, Brandl, Bernhard, Käufl, Hans Ulrich, Pantin, Eric, Pietrow, Alex G. M., Siebenmorgen, Ralf, Stuik, Remko, Tristram, Konrad R. W., de Wit, Willem-Jan
Publikováno v:
Proceedings of the SPIE, Volume 11447, id. 114477L 17 pp. (2020)
Ground-based thermal-infrared observations have a unique scientific potential, but are also extremely challenging due to the need to accurately subtract the high thermal background. Since the established techniques of chopping and nodding need to be
Externí odkaz:
http://arxiv.org/abs/2012.13528
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:
Hönig, Sebastian F., Herrero, Almudena Alonso, Gandhi, Poshak, Kishimoto, Makoto, Pott, Joerg-Uwe, Surdej, Jean, Tristram, Konrad R. W.
Publikováno v:
Experimental Astronomy, Volume 46, Issue 3, pp.413-419 (2018)
Infrared (IR) interferometry has made widely recognised contributions to the way we look at the dusty environment of supermassive black holes on parsec scales. It finally provided direct evidence for orientation-dependent unification of active galaxi
Externí odkaz:
http://arxiv.org/abs/1909.08760
Recent observations which resolved the mid-infrared (MIR) emission of nearby active galactic nuclei (AGN), surprisingly revealed that their dust emission appears prominently extended in the polar direction, at odds with the expectations from the cano
Externí odkaz:
http://arxiv.org/abs/1901.05488
Autor:
GRAVITY collaboration, Karl, Martina, Pfuhl, Oliver, Eisenhauer, Frank, Genzel, Reinhard, Grellmann, Rebekka, Habibi, Maryam, Abuter, Roberto, Accardo, Matteo, Amorim, António, Anugu, Narsireddy, Ávila, Gerardo, Benisty, Myriam, Berger, Jean-Philippe, Bland, Nicolas, Bonnet, Henri, Bourget, Pierre, Brandner, Wolfgang, Brast, Roland, Buron, Alexander, Garatti, Alessio Caratti o, Chapron, Frédéric, Clénet, Yann, Collin, Claude, Foresto, Vincent Coudé du, de Wit, Willem-Jan, de Zeeuw, Tim, Deen, Casey, Delplancke-Ströbele, Françoise, Dembet, Roderick, Derie, Frédéric, Dexter, Jason, Duvert, Gilles, Ebert, Monica, Eckart, Andreas, Esselborn, Michael, Fédou, Pierre, Finger, Gert, Garcia, Paulo, Dabo, Cesar Enrique Garcia, Lopez, Rebeca Garcia, Gao, Feng, Gandron, Éric, Gillessen, Stefan, Gonté, Frédéric, Gordo, Paulo, Grözinger, Ulrich, Guajardo, Patricia, Guieu, Sylvain, Haguenauer, Pierre, Hans, Oliver, Haubois, Xavier, Haug, Marcus, Haußmann, Frank, Henning, Thomas, Hippler, Stefan, Horrobin, Matthew, Huber, Armin, Hubert, Zoltan, Hubin, Norbert, Hummel, Christian A., Jakob, Gerd, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kellner, Stefan, Kandrew, Sarah, Kern, Lothar, Kervella, Pierre, Kiekebusch, Mario, Klein, Ralf, Köhler, Rainer, Kolb, Johan, Kulas, Martin, Lacour, Sylvestre, Lapeyrère, Vincent, Lazareff, Bernard, Bouquin, Jean-Baptiste Le, Léna, Pierre, Lenzen, Rainer, Lévêque, Samuel, Lin, Chien-Cheng, Lippa, Magdalena, Magnard, Yves, Mehrgan, Leander, Mérand, Antoine, Moulin, Thibaut, Müller, Eric, Müller, Friedrich, Neumann, Udo, Oberti, Sylvain, Ott, Thomas, Pallanca, Laurent, Panduro, Johana, Pasquini, Luca, Paumard, Thibaut, Percheron, Isabelle, Perraut, Karine, Perrin, Guy, Pflüger, Andreas, Duc, Thanh Phan, Plewa, Philipp M., Popovic, Dan, Rabien, Sebastian, Ramírez, Andrés, Ramos, Jose, Rau, Christian, Riquelme, Miguel, Rodríguez-Coira, Gustavo, Rohloff, Ralf-Rainer, Rosales, Alejandra, Rousset, Gérard, Sanchez-Bermudez, Joel, Scheithauer, Silvia, Schöller, Markus, Schuhler, Nicolas, Spyromilio, Jason, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Suarez, Marcos, Tristram, Konrad R. W., Ventura, Noel, Vincent, Frédéric, Waisberg, Idel, Wank, Imke, Widmann, Felix, Wieprecht, Ekkehard, Wiest, Michael, Wiezorrek, Erich, Wittkowski, Markus, Woillez, Julien, Wolff, Burkhard, Yazici, Senol, Ziegler, Denis, Zins, Gérard
Publikováno v:
A&A 620, A116 (2018)
This work presents an interferometric study of the massive-binary fraction in the Orion Trapezium Cluster with the recently comissioned GRAVITY instrument. We observe a total of 16 stars of mainly OB spectral type. We find three previously unknown co
Externí odkaz:
http://arxiv.org/abs/1809.10376