Zobrazeno 1 - 10
of 2 317
pro vyhledávání: '"Schellenberger, P"'
Autor:
Romero, Charles, Gaspari, Massimo, Schellenberger, Gerrit, Benson, Bradford A., Bleem, Lindsey E., Bulbul, Esra, Forman, William, Kraft, Ralph, Nulsen, Paul, Reichardt, Christian L., Sarkar, Arnab, Somboonpanyakul, Taweewat, Su, Yuanyuan
The hot plasma in galaxy clusters, the intracluster medium (ICM), is expected to be shaped by subsonic turbulent motions, which are key for heating, cooling, and transport mechanisms. The turbulent motions contribute to the non-thermal pressure which
Externí odkaz:
http://arxiv.org/abs/2412.05478
Autor:
Schellenberger, Gerrit, O'Sullivan, Ewan, David, Laurence, Vrtilek, Jan, Romero, Charles, Petitpas, Glen, Forman, William, Giacintucci, Simona, Gurwell, Mark, Jones, Christine, Rajpurohit, Kamlesh, Ubertosi, Francesco, Venturi, Tiziana
The active galactic nucleus (AGN) feeding and feedback process in the centers of galaxy clusters and groups is still not well understood. NGC 5044 is the ideal system in which to study AGN feedback. It hosts the largest known reservoir of cold gas in
Externí odkaz:
http://arxiv.org/abs/2409.06039
Autor:
Rajpurohit, K., O'Sullivan, E., Schellenberger, G., Brienza, M., Vrtilek, J. M., Forman, W., David, L. P., Clarke, T., Botteon, A., Vazza, F., Giacintucci, S., Jones, C., Brüggen, M., Shimwell, T. W., Drabent, A., Loi, F., Loubser, S. I., Kolokythas, K., Babyk, I., Röttgering, H. J. A.
We present deep, wideband multifrequency radio observations (144 MHz$-$8 GHz) of the remarkable galaxy group NGC 741, which yield crucial insights into the interaction between the infalling head-tail radio galaxy (NGC 742) and the main group. Our new
Externí odkaz:
http://arxiv.org/abs/2408.15197
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.
Publikováno v:
A&A, 691, A355 (2024)
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:
Poliszczuk, Artem, Wilkins, Dan, Allen, Steven W., Miller, Eric D., Chattopadhyay, Tanmoy, Schneider, Benjamin, Darve, Julien Eric, Bautz, Marshall, Falcone, Abe, Foster, Richard, Grant, Catherine E., Herrmann, Sven, Kraft, Ralph, Morris, R. Glenn, Nulsen, Paul, Orel, Peter, Schellenberger, Gerrit, Stueber, Haley R.
Traditional cosmic ray filtering algorithms used in X-ray imaging detectors aboard space telescopes perform event reconstruction based on the properties of activated pixels above a certain energy threshold, within 3x3 or 5x5 pixel sliding windows. Th
Externí odkaz:
http://arxiv.org/abs/2407.16768
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
Publikováno v:
JHEP10(2024)210
We examine the effect of finite top- and bottom-quark masses on the Higgs production cross section in the gluon-gluon fusion channel. We employ both $\overline{\text{MS}}$ and on-shell renormalisation for the quark masses and provide a thorough compa
Externí odkaz:
http://arxiv.org/abs/2407.12413
Abell 2744, also known as Pandora's Cluster, is a complex merging galaxy cluster. While a major merger is clear along the north-south axis, the dynamical state of the northwest subcluster has been highly uncertain. We present ultra-deep ($\approx$2.1
Externí odkaz:
http://arxiv.org/abs/2407.03142
Autor:
Weaver, Kimberly A., Cann, Jenna M., Pfeifle, Ryan W., Sobolewska, Malgorzata, Pinto, Ciro, Azadi, Mojegan, Porquet, Delphine, Chakraborty, Priyanka, Rogantini, Daniele, Schellenberger, Gerrit, Tanner, Ryan, Mei, Simona, Bogdan, Akos, Nguyen, Dustin
This white paper discusses the breadth of science related to active galactic nuclei (AGN) and associated phenomena to be enabled by a mission with microcalorimeter energy resolution in the soft X-ray band, a large collecting area, and wide-field imag
Externí odkaz:
http://arxiv.org/abs/2406.18743
Autor:
O'Sullivan, Ewan, Rajpurohit, Kamlesh, Schellenberger, Gerrit, Vrtilek, Jan, David, Laurence P., Babul, Arif, Olivares, Valeria, Ubertosi, Francesco, Kolokythas, Konstantinos, Babyk, Iurii, Loubser, Ilani
NGC 777 provides an example of a phenomenon observed in some group-central ellipticals, in which the temperature profile shows a central peak, despite the short central cooling time of the intra-group medium. We use deep Chandra X-ray observations of
Externí odkaz:
http://arxiv.org/abs/2405.13667