Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Schellenberger, G."'
Autor:
Pandya, A., Migkas, K., Reiprich, T. H., Stanford, A., Pacaud, F., Schellenberger, G., Lovisari, L., Ramos-Ceja, M. E., Nguyen-Dang, N. T., Park, S.
In standard cosmology, the late Universe is assumed to be statistically homogeneous and isotropic. However, a recent study based on galaxy clusters by Migkas et al. (2021, arXiv:2103.13904) found an apparent spatial variation of approximately $9\%$ i
Externí odkaz:
http://arxiv.org/abs/2408.00726
Autor:
Wilkins, D. R., Poliszczuk, A., Schneider, B., Miller, E. D., Allen, S. W., Bautz, M., Chattopadhyay, T., Falcone, A. D., Foster, R., Grant, C. E., Herrmann, S., Kraft, R., Morris, R. G., Nulsen, P., Orel, P., Schellenberger, G.
Publikováno v:
Proc. SPIE, 2024, 13093-65
Bringing artificial intelligence (AI) alongside next-generation X-ray imaging detectors, including CCDs and DEPFET sensors, enhances their sensitivity to achieve many of the flagship science cases targeted by future X-ray observatories, based upon lo
Externí odkaz:
http://arxiv.org/abs/2407.16764
Autor:
Migkas, K., Kox, D., Schellenberger, G., Veronica, A., Pacaud, F., Reiprich, T. H., Bahar, Y. E., Balzer, F., Bulbul, E., Comparat, J., Dennerl, K., Freyberg, M., Garrel, C., Ghirardini, V., Grandis, S., Kluge, M., Liu, A., Ramos-Ceja, M. E., Sanders, J., Zhang, X.
Publikováno v:
A&A 688, A107 (2024)
Galaxy cluster gas temperatures ($T$) play a crucial role in many cosmological and astrophysical studies. However, it has been shown that $T$ measurements can vary between different X-ray telescopes. These $T$ biases can propagate to several cluster
Externí odkaz:
http://arxiv.org/abs/2401.17297
Autor:
Rajpurohit, K., Lovisari, L., Botteon, A., Jones, C., Forman, W., O'Sullivan, E., van Weeren, R. J., HyeongHan, K., Bonafede, A., Jee, M. J., Vazza, F., Brunetti, G., Cho, H., Domínguez-Fernández, P., Stroe, A., Finner, K., Brüggen, M., Vrtilek, J. M., David, L. P., Schellenberger, G., Wittman, D., Lusetti, G., Kraft, R., Gasperin, F. de.
We present deep XMM-Newton, Karl Jansky Very Large Array, and upgraded Giant Metrewave Radio Telescope observations of Abell 746, a cluster that hosts a plethora of diffuse emission sources that provide evidence for the acceleration of relativistic p
Externí odkaz:
http://arxiv.org/abs/2309.01716
Autor:
ZuHone, J. A., Schellenberger, G., Ogorzalek, A., Oppenheimer, B. D., Stern, J., Bogdan, A., Truong, N., Markevitch, M., Pillepich, A., Nelson, D., Burchett, J. N., Khabibullin, I., Kilbourne, C. A., Kraft, R. P., Nulsen, P. E. J., Veilleux, S., Vogelsberger, M., Wang, Q. D., Zhuravleva, I.
The hot, X-ray-emitting phase of the circumgalactic medium of massive galaxies is believed to be the reservoir of baryons from which gas flows onto the central galaxy and into which feedback from AGN and stars inject mass, momentum, energy, and metal
Externí odkaz:
http://arxiv.org/abs/2307.01269
Autor:
Wilkins, D. R., Allen, S. W., Miller, E. D., Bautz, M., Chattopadhyay, T., Foster, R., Grant, C. E., Hermann, S., Kraft, R., Morris, R. G., Nulsen, P., Schellenberger, G.
Publikováno v:
Proc. SPIE, 2022, 12181, 155
The sensitivity of astronomical X-ray detectors is limited by the instrumental background. The background is especially important when observing low surface brightness sources that are critical for many of the science cases targeted by future X-ray o
Externí odkaz:
http://arxiv.org/abs/2208.07906
Autor:
Migkas, K., Pacaud, F., Schellenberger, G., Erler, J., Nguyen-Dang, N. T., Reiprich, T. H., Ramos-Ceja, M. E., Lovisari, L.
Publikováno v:
A&A 649, A151 (2021)
The hypothesis that the late Universe is isotropic and homogeneous is adopted by most cosmological studies. The expansion rate $H_0$ is thought to be spatially constant, while bulk flows are often presumed to be negligible compared to the Hubble expa
Externí odkaz:
http://arxiv.org/abs/2103.13904
Autor:
Collaboration, The CHEX-MATE, Arnaud, M., Ettori, S., Pratt, G. W., Rossetti, M., Eckert, D., Gastaldello, F., Gavazzi, R., Kay, S. T., Lovisari, L., Maughan, B. J., Pointecouteau, E., Sereno, M., Bartalucci, I., Bonafede, A., Bourdin, H., Cassano, R., Duffy, R. T., Iqbal, A., Maurogordato, S., Rasia, E., Sayers, J., Andrade-Santos, F., Aussel, H., Barnes, D. J., Barrena, R., Borgani, S., Burkutean, S., Clerc, N., Corasaniti, P. -S., Cuillandre, J. -C., De Grandi, S., De Petris, M., Dolag, K., Donahue, M., Ferragamo, A., Gaspari, M., Ghizzardi, S., Gitti, M., Haines, C. P., Jauzac, M., Johnston-Hollitt, M., Jones, C., Kéruzoré, F., Brun, A. M. C. Le, Mayet, F., Mazzotta, P., Melin, J. -B., Molendi, S., Nonino, M., Okabe, N., Paltani, S., Perotto, L., Pires, S., Radovich, M., Rubino-Martin, J. -A., Salvati, L., Saro, A., Sartoris, B., Schellenberger, G., Streblyanska, A., Tarrio, P., Tozzi, P., Umetsu, K., van der Burg, R. F. J., Vazza, F., Venturi, T., Yepes, G., Zarattini, S.
Publikováno v:
A&A 650, A104 (2021)
The Cluster HEritage project with XMM-Newton - Mass Assembly and Thermodynamics at the Endpoint of structure formation (CHEX-MATE) is a three mega-second Multi-Year Heritage Programme to obtain X-ray observations of a minimally-biased, signal-to-nois
Externí odkaz:
http://arxiv.org/abs/2010.11972
Autor:
Lovisari, L., Ettori, S., Sereno, M., Schellenberger, G., Forman, W. R., Andrade-Santos, F., Jones, C.
Publikováno v:
A&A 644, A78 (2020)
Total mass is arguably the most fundamental property for cosmological studies with galaxy clusters. We investigate the present differences in the mass estimates obtained through independent X-ray, weak-lensing, and dynamical studies. We quantify the
Externí odkaz:
http://arxiv.org/abs/2010.03582
Publikováno v:
A&A 636, A15 (2020)
The isotropy of the late Universe is an assumption greatly used in astronomy. However, many studies have recently reported deviations from isotropy with a definitive conclusion yet to be made. New, independent methods to robustly test the cosmic isot
Externí odkaz:
http://arxiv.org/abs/2004.03305