Zobrazeno 1 - 10
of 1 521
pro vyhledávání: '"Georgakakis A"'
Autor:
Guetzoyan, Paloma, Aird, James, Georgakakis, Antonis, Coil, Alison L., Barlow-Hall, Cassandra, Hickox, Ryan C., Rankine, Amy L., Terrazas, Bryan A.
Supermassive Black Holes (BHs) are known to efficiently grow through gas accretion, but even sustained and intense mass build-up through this mechanism struggles to explain the assembly of the most massive BHs observed in the local Universe. Using th
Externí odkaz:
http://arxiv.org/abs/2408.14297
Autor:
Buchner, Johannes, Starck, Hattie, Salvato, Mara, Netzer, Hagai, Igo, Zsofi, Laloux, Brivael, Georgakakis, Antonis, Gauger, Isabelle, Olechowska, Anna, Lopez, Nicolas, Shankar, Suraj D, Li, Junyao, Nandra, Kirpal, Merloni, Andrea
The assembly and co-evolution of supermassive black holes (SMBH) and their host galaxy stellar population is a key open questions in galaxy evolution. Stellar mass ($M_\star$) and star formation rate (SFR), are inferred by modeling the spectral energ
Externí odkaz:
http://arxiv.org/abs/2405.19297
Autor:
Laloux, Brivael, Georgakakis, Antonis, Alexander, David M., Buchner, Johannes, Andonie, Carolina, Acharya, Nischal, Aird, James, Alonso-Tetilla, Alba V., Bongiorno, Angela, Hickox, Ryan C., Lapi, Andrea, Musiimenta, Blessing, Almeida, Cristina Ramos, Villforth, Carolin, Shankar, Francesco
Publikováno v:
MNRAS 532 (2024) 3459-3479
We adopt a Bayesian X-ray spectral approach to investigate the accretion properties of unobscured ($20<\log(N_{\rm H}/{\rm cm}^{-2}<22$) and obscured ($22< \log(N_{\rm H}/{\rm cm}^{-2}<24$) active galactic nuclei (AGN) to shed light on the orientatio
Externí odkaz:
http://arxiv.org/abs/2403.07109
Autor:
Rodríguez, Iván Muñoz, Georgakakis, Antonis, Shankar, Francesco, Ruiz, Ángel, Bonoli, Silvia, Comparat, Johan, Koulouridis, Elias, Lapi, Andrea, Almeida, Cristina Ramos
Environmental effects are believed to play an important yet poorly understood role in triggering accretion events onto the supermassive black holes (SMBHs) of galaxies (Active Galactic Nuclei; AGN). Massive clusters, which represent the densest struc
Externí odkaz:
http://arxiv.org/abs/2403.07060
Autor:
Igo, Z., Merloni, A., Hoang, D., Buchner, J., Liu, T., Salvato, M., Arcodia, R., Bellstedt, S., Brüggen, M., Croston, J. H., de Gasperin, F., Georgakakis, A., Hardcastle, M. J., Nandra, K., Ni, Q., Pasini, T., Shimwell, T., Wolf, J.
Publikováno v:
A&A 686, A43 (2024)
Radio jets are present in a diverse sample of AGN. However, the mechanisms of jet powering are not fully understood, and it is yet unclear to what extent they obey mass-invariant scaling relations, similar to those found for the triggering and fuelli
Externí odkaz:
http://arxiv.org/abs/2402.16943
Autor:
Tubín-Arenas, D., Krumpe, M., Lamer, G., Haase, J., Sanders, J., Brunner, H., Homan, D., Schwope, A., Georgakakis, A., Poppenhaeger, K., Traulsen, I., König, O., Merloni, A., Gueguen, A., Strong, A., Liu, Z.
The soft X-ray instrument eROSITA on board the Spectrum-Roentgen-Gamma (SRG) observatory has successfully completed four of the eight planned all-sky surveys, detecting almost one million X-ray sources during the first survey (eRASS1). The catalog of
Externí odkaz:
http://arxiv.org/abs/2401.17305
Autor:
Nandra, K., Waddell, S. G. H., Liu, T., Buchner, J., Dwelly, T., Salvato, M., Shen, Y., Wu, Q., Arcodia, R., Boller, Th., Brunner, H., Brusa, M., Collmar, W., Comparat, J., Georgakakis, A., Grau, M., Hämmerich, S., Ibarra-Medel, H., Igo, Z., Krumpe, M., Lamer, G., Merloni, A., Musiimenta, B., Wolf, J., Assef, R. J., Bauer, F. E., Brandt, W. N., Rix, H. -W.
During its calibration and performance verification phase, the eROSITA instrument aboard the SRG satellite performed a uniform wide--area X-ray survey of approximately 140 deg$^{2}$ in a region of the sky known as the eROSITA Final Equatorial Depth S
Externí odkaz:
http://arxiv.org/abs/2401.17300
Autor:
Georgakakis, A., Buchner, J., Ruiz, A., Boller, T., Akylas, A., Paolillo, M., Salvato, M., Merloni, A., Nandra, K., Dwelly, T.
Although flux variability is one of the defining properties of accretion flows onto supermassive black holes, its dependence on physical parameters such as the mass of the compact object and the Eddington ratio remain under discussion. In this paper
Externí odkaz:
http://arxiv.org/abs/2401.17285
Autor:
Boller, Th., Freyberg, M., Buchner, J., Haberl, F., Maitra, C., Schwope, A., Robrade, J., Rau, A., Grotova, I., Waddell, S., Ni, Q., Salvato, M., Krumpe, M., Georgakakis, A., Merloni, A., Nandra, K.
The extended ROentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spectrum-Roentgen-Gamma (SRG) mission with its first All-Sky Survey (eRASS1) has offered an unprecedented, comprehensive view of the variable X-ray sky. With enhanced
Externí odkaz:
http://arxiv.org/abs/2401.17280
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