Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Fuhrmann, Lars"'
Autor:
Zajaček, Michal, Busch, Gerold, Valencia-S., Mónica, Eckart, Andreas, Britzen, Silke, Fuhrmann, Lars, Schneeloch, Jana, Fazeli, Nastaran, Harrington, Kevin C., Zensus, J. Anton
Publikováno v:
A&A 630, A83 (2019)
A detailed understanding of how the activity of a galactic nucleus regulates the growth of its host is still missing. To understand the activity and the types of accretion of supermassive black holes in different hosts, it is essential to study radio
Externí odkaz:
http://arxiv.org/abs/1906.08877
Autor:
Karamanavis, Vassilis, Dirks, Heinrich, Fuhrmann, Lars, Schlichthaber, Frank, Egli, Nora, Patzelt, Thomas, Klare, Jens
Publikováno v:
In Advances in Space Research July 2023
Autor:
Jaron, Frederic, Sharma, Richa, Massi, Maria, Fuhrmann, Lars, Angelakis, Emmanouil, Myserlis, Ioannis, Li, Guang-Xing, Shi, Xun
LS I +61${^\circ}$303 is a $\gamma$-ray emitting X-ray binary with periodic radio outbursts with time scales of one month. Previous observations have revealed microflares superimposed on these large outbursts with periods ranging from a few minutes t
Externí odkaz:
http://arxiv.org/abs/1707.08537
Autor:
Myserlis, Ioannis, Angelakis, Emmanouil, Kraus, Alex, Fuhrmann, Lars, Karamanavis, Vassilis, Zensus, J. Anton
Publikováno v:
Physical Conditions and Variability Processes in AGN Jets through Multi-Frequency Linear and Circular Radio Polarization Monitoring. Galaxies 2016, 4, 58
Radio polarimetry is an invaluable tool to investigate the physical conditions and variability processes in active galactic nuclei (AGN) jets. However, detecting their linear and circular polarization properties is a challenging endeavor due to their
Externí odkaz:
http://arxiv.org/abs/1611.09403
Autor:
Rachen, Jörg P., Fuhrmann, Lars, Krichbaum, Thomas, Angelakis, Emmanouil, Nestoras, Ioannis, Zensus, Anton, Sievers, Albrecht, Ungerechts, Hans, Keihänen, Elina, Reinecke, Martin
We present the outline and first results of a project using the synergies of the long term blazar radiomillimetre monitoring program F-GAMMA, the continued scanning of the millimetre-submillimetre sky by the Planck satellite, together with several de
Externí odkaz:
http://arxiv.org/abs/1603.02144
Autor:
Richards, Joseph L., Hovatta, Talvikki, Lister, Matthew L., Readhead, Anthony C. S., Max-Moerbeck, Walter, Savolainen, Tuomas, Angelakis, Emmanouil, Fuhrmann, Lars, Aller, Margo F., Aller, Hugh D., Myserlis, Ioannis, Karamanavis, Vassilis
In September 2012, the high-synchrotron-peaked (HSP) blazar Markarian 421 underwent a rapid wideband radio flare, reaching nearly twice the brightest level observed in the centimeter band in over three decades of monitoring. In response to this event
Externí odkaz:
http://arxiv.org/abs/1309.6319
Autor:
Tibolla, Omar, Kaufmann, Sarah, Foschini, Luigi, Mannheim, Karl, Zhang, Shu, Li, Jian, Angelakis, Emmanouil, Fuhrmann, Lars, Haeusner, Paul, Kania, Jannik, Elsaesser, Dominik, Kreikenbohm, Annika, Schulz, Robert, Kadler, Matthias
Narrow-Line Seyfert 1 galaxies have been established as a new class of gamma-ray emitting AGN with relatively low black hole masses, but near-Eddington accretion rates. Other extragalactic gamma-ray sources observed so far such as Flat Spectrum Radio
Externí odkaz:
http://arxiv.org/abs/1306.4017
Autor:
Liu, Xiang, Song, Hua-Gang, Liu, Jun, Ding, Zhen, Marchili, Nicola, Krichbaum, Thomas P., Fuhrmann, Lars, Zensus, Anton, An, Tao
Publikováno v:
Research in Astron. Astrophys. 2012 Vol. 12 No. 2, 147--157
Using the Urumqi 25m radio telescope, sources from the first three-month Fermi-LAT detected AGN catalog with declination >0 were observed in 2009 at 4.8 GHz. The radio flux density appears to correlate with the gamma-ray intensity. Intra-day variabil
Externí odkaz:
http://arxiv.org/abs/1110.1794
Autor:
Richards, Joseph L., Max-Moerbeck, Walter, Pavlidou, Vasiliki, King, Oliver G., Pearson, Timothy J., Readhead, Anthony C. S., Reeves, Rodrigo, Shepherd, Martin C., Stevenson, Matthew A., Weintraub, Lawrence C., Fuhrmann, Lars, Angelakis, Emmanouil, Zensus, J. Anton, Healey, Stephen E., Romani, Roger W., Shaw, Michael S., Grainge, Keith, Birkinshaw, Mark, Lancaster, Katy, Worrall, Diana M., Taylor, Gregory B., Cotter, Garret, Bustos, Ricardo
The Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope provides an unprecedented opportunity to study gamma-ray blazars. To capitalize on this opportunity, beginning in late 2007, about a year before the start of LAT science operat
Externí odkaz:
http://arxiv.org/abs/1011.3111