Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Gokus, A"'
Autor:
Gokus, Andrea, Böttcher, Markus, Errando, Manel, Kreter, Michael, Heßdörfer, Jonas, Eppel, Florian, Kadler, Matthias, Smith, Paul S., Benke, Petra, Gurvits, Leonid I., Kraus, Alex, Lisakov, Mikhail, McBride, Felicia, Ros, Eduardo, Rösch, Florian, Wilms, Jörn
Blazars can be detected from very large distances due to their high luminosity. However, the detection of $\gamma$-ray emission of blazars beyond $z=3$ has only been confirmed for a small number of sources. Such observations probe the growth of super
Externí odkaz:
http://arxiv.org/abs/2406.07635
Autor:
Benke, P., Gokus, A., Lisakov, M., Gurvits, L. I., Eppel, F., Heßdörfer, J., Kadler, M., Kovalev, Y. Y., Ros, E., Rösch, F.
Publikováno v:
A&A 689, A43 (2024)
High-redshift blazars provide valuable input to studies of the evolution of active galactic nuclei (AGN) jets and provide constraints on cosmological models. Detections at high energies ($0.1<\mathrm{E}<100$ GeV) of these distant sources are rare, bu
Externí odkaz:
http://arxiv.org/abs/2406.03135
Autor:
Gokus, Andrea, Jahnke, Knud, Woods, Paul M, Moss, Vanessa A, Ossenkopf-Okada, Volker, Sacchi, Elena, Stevens, Adam R H, Burtscher, Leonard, Kayhan, Cenk, Dalgleish, Hannah, Grinberg, Victoria, Rector, Travis A, Rybizki, Jan, White, Jacob
Publikováno v:
PNAS Nexus, Volume 3, Issue 5, May 2024, pgae143
Travel to academic conferences -- where international flights are the norm -- is responsible for a sizeable fraction of the greenhouse gas (GHG) emissions associated with academic work. In order to provide a benchmark for comparison with other fields
Externí odkaz:
http://arxiv.org/abs/2405.00104
Autor:
Gokus, A., Wilms, J., Kadler, M., Dorner, D., Nowak, M. A., Kreikenbohm, A., Leiter, K., Bretz, T., Schleicher, B., Markowitz, A. G., Pottschmidt, K., Mannheim, K., Kreykenbohm, I., Langejahn, M., McBride, F., Beuchert, T., Dauser, T., Kreter, M., Abhir, J., Baack, D., Balbo, M., Biland, A., Brand, K., Buss, J., Eisenberger, L., Elsaesser, D., Guenther, P., Hildebrand, D., Linhoff, M., Paravac, A., Rhode, W., Sliusar, V., Hasan, S., Walter, R.
By studying the variability of blazars across the electromagnetic spectrum, it is possible to resolve the underlying processes responsible for rapid flux increases, so-called flares. We report on an extremely bright X-ray flare in the high-peaked BL
Externí odkaz:
http://arxiv.org/abs/2402.19377
Autor:
Merloni, A., Lamer, G., Liu, T., Ramos-Ceja, M. E., Brunner, H., Bulbul, E., Dennerl, K., Doroshenko, V., Freyberg, M. J., Friedrich, S., Gatuzz, E., Georgakakis, A., Haberl, F., Igo, Z., Kreykenbohm, I., Liu, A., Maitra, C., Malyali, A., Mayer, M. G. F., Nandra, K., Predehl, P., Robrade, J., Salvato, M., Sanders, J. S., Stewart, I., Tubín-Arenas, D., Weber, P., Wilms, J., Arcodia, R., Artis, E., Aschersleben, J., Avakyan, A., Aydar, C., Bahar, Y. E., Balzer, F., Becker, W., Berger, K., Boller, T., Bornemann, W., Brüggen, M., Brusa, M., Buchner, J., Burwitz, V., Camilloni, F., Clerc, N., Comparat, J., Coutinho, D., Czesla, S., Dannhauer, S. M., Dauner, L., Dauser, T., Dietl, J., Dolag, K., Dwelly, T., Egg, K., Ehl, E., Freund, S., Friedrich, P., Gaida, R., Garrel, C., Ghirardini, V., Gokus, A., Grünwald, G., Grandis, S., Grotova, I., Gruen, D., Gueguen, A., Hämmerich, S., Hamaus, N., Hasinger, G., Haubner, K., Homan, D., Chitham, J. Ider, Joseph, W. M., Joyce, A., König, O., Kaltenbrunner, D. M., Khokhriakova, A., Kink, W., Kirsch, C., Kluge, M., Knies, J., Krippendorf, S., Krumpe, M., Kurpas, J., Li, P., Liu, Z., Locatelli, N., Lorenz, M., Müller, S., Magaudda, E., Mannes, C., McCall, H., Meidinger, N., Michailidis, M., Migkas, K., Muñoz-Giraldo, D., Musiimenta, B., Nguyen-Dang, N. T., Ni, Q., Olechowska, A., Ota, N., Pacaud, F., Pasini, T., Perinati, E., Pires, A. M., Pommranz, C., Ponti, G., Poppenhaeger, K., Pühlhofer, G., Rau, A., Reh, M., Reiprich, T. H., Roster, W., Saeedi, S., Santangelo, A., Sasaki, M., Schmitt, J., Schneider, P. C., Schrabback, T., Schuster, N., Schwope, A., Seppi, R., Serim, M. M., Shreeram, S., Sokolova-Lapa, E., Starck, H., Stelzer, B., Stierhof, J., Suleimanov, V., Tenzer, C., Traulsen, I., Trümper, J., Tsuge, K., Urrutia, T., Veronica, A., Waddell, S. G. H., Willer, R., Wolf, J., Yeung, M. C. H., Zainab, A., Zangrandi, F., Zhang, X., Zhang, Y., Zheng, X.
Publikováno v:
A&A, vol. 682, A34 (2024)
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sky maps of an unprecedented depth. Here we present catalogues of both p
Externí odkaz:
http://arxiv.org/abs/2401.17274
Autor:
Markowitz, Alex, Krumpe, Mirko, Homan, David, Gromadzki, Mariusz, Schramm, Malte, Boller, Thomas, Krishnan, Saikruba, Saha, Tathagata, Wilms, Joern, Gokus, Andrea, Haemmerich, Steven, Winkler, Hartmut, Buchner, Johannes, Buckley, David A. H., Brogan, Roisin, Reichart, Daniel E.
Recent years have seen broad observational support for the presence of a clumpy component within the circumnuclear gas around SMBHs. In the X-ray band, individual clouds can manifest themselves when they transit the line of sight to the X-ray corona,
Externí odkaz:
http://arxiv.org/abs/2401.08768
Autor:
Eppel, F., Kadler, M., Heßdörfer, J., Benke, P., Debbrecht, L., Eich, J., Gokus, A., Hämmerich, S., Kirchner, D., Paraschos, G. F., Rösch, F., Schulga, W., Sinapius, J., Weber, P., Bach, U., Dorner, D., Edwards, P. G., Giroletti, M., Kraus, A., Hervet, O., Koyama, S., Krichbaum, T. P., Mannheim, K., Ros, E., Zacharias, M., Zensus, J. A.
Aims. We introduce the TELAMON program which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, specifically TeV blazars and candidate neutrino-associated AGN.
Externí odkaz:
http://arxiv.org/abs/2401.06296
Autor:
Marcotulli, Lea, Ajello, Marco, Böttcher, Markus, Coppi, Paolo, Costamante, Luigi, Di Gesu, Laura, Errando, Manel, García, Javier A., Gokus, Andrea, Liodakis, Ioannis, Madejski, Greg, Madsen, Kristin, Moretti, Alberto, Middei, Riccardo, McBride, Felicia, Petropoulou, Maria, Rani, Bindu, Sbarrato, Tullia, Stern, Daniel, Vasilopoulos, Georgios, Zacharias, Michael, Zhang, Haocheng, Collaboration, the HEX-P
A fraction of the active supermassive black holes at the centers of galaxies in our Universe are capable of launching extreme kiloparsec-long relativistic jets. These jets are known multiband (radio to $\gamma$-ray) and multimessenger (neutrino) emit
Externí odkaz:
http://arxiv.org/abs/2311.04801
Autor:
Heßdörfer, J., Kadler, M., Benke, P., Debbrecht, L., Eich, J., Eppel, F., Gokus, A., Hämmerich, S., Kirchner, D., Paraschos, G. F., Rösch, F., Schulga, W., Sinapius, J., Weber, P., Bach, U., Berge, D., Buson, S., Dorner, D., Edwards, P. G., Fromm, C. M., Giroletti, M., Hervet, O., Kappes, A., Koyama, S., Kraus, A., Krichbaum, T. P., Lindfors, E., Mannheim, K., Ojha, R., Pueschel, E., Ros, E., Schleicher, B., Sitarek, J., Wilms, J., Zacharias, M., Zensus, J. A.
We present recent results of the TELAMON program, which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, namely TeV blazars and neutrino-associated AGN. Our
Externí odkaz:
http://arxiv.org/abs/2309.14794
Autor:
Saha, T., Markowitz, A., Homan, D., Krumpe, M., Haemmerich, S., Czerny, B., Graham, M., Frederick, S., Gromadzki, M., Gezari, S., Winkler, H., Buckley, D. A. H., Brink, J., Naddaf, M. H., Rau, A., Wilms, J., Gokus, A., Liu, Z., Grotova, I.
Context. Multiwavelength studies of transients in actively accreting supermassive black holes have revealed that large-amplitude variability is frequently linked to significant changes in the optical spectra -- a phenomenon referred to as changing-lo
Externí odkaz:
http://arxiv.org/abs/2309.08956