Zobrazeno 1 - 10
of 897
pro vyhledávání: '"Ignesti, A"'
Autor:
Ignesti, Alessandro, Brunetti, Gianfranco, Gullieuszik, Marco, Akerman, Nina, Marasco, Antonino, Poggianti, Bianca M., Li, Yuan, Vulcani, Benedetta, Gitti, Myriam, Moretti, Alessia, Giunchi, Eric, Tomičić, Neven, Bacchini, Cecilia, Paladino, Rosita, Radovich, Mario, Wolter, Anna
The microphysics of the intracluster medium (ICM) in galaxy clusters is still poorly understood. Observational evidence suggests that the effective viscosity is suppressed by plasma instabilities that reduce the mean free path of particles. Measuring
Externí odkaz:
http://arxiv.org/abs/2411.07034
Autor:
Bruno, L., Venturi, T., Dallacasa, D., Brienza, M., Ignesti, A., Brunetti, G., Riseley, C. J., Rossetti, M., Gastaldello, F., Botteon, A., Rudnick, L., van Weeren, R. J., Shulevski, A., Lal, D. V.
Publikováno v:
A&A 690, A329 (2024)
Context. Tailed radio galaxies are shaped by ram pressure owing to the high-velocity motion of their host through the intracluster medium (ICM). Recent works have reported on the increasing complexity of the phenomenology of tailed galaxies, with dep
Externí odkaz:
http://arxiv.org/abs/2409.03453
Autor:
Tomicic, Neven, Werle, Ariel, Vulcani, Benedetta, Ignesti, Alessandro, Moretti, Alessia, Wolter, Anna, George, Koshy, Poggianti, Bianca Maria, Gullieuszik, Marco
Star-formation rates (SFR) in galaxies offer a view of various physical processes across them and are measured using various tracers, such as H$\alpha$ and UV. Different physical mechanisms can affect H$\alpha$ and UV emission, resulting in a discrep
Externí odkaz:
http://arxiv.org/abs/2409.01351
Autor:
Roberts, I. D., van Weeren, R. J., de Gasperin, F., Botteon, A., Edler, H. W., Ignesti, A., Matijević, L., Tomičić, N.
Publikováno v:
A&A 689, A22 (2024)
We present the discovery of a 100 kpc low-frequency radio tail behind the nearby group galaxy, NGC 2276. The extent of this tail is a factor of ten larger than previously reported from higher-frequency radio and X-ray imaging. The radio morphology of
Externí odkaz:
http://arxiv.org/abs/2406.09221
Autor:
Ubertosi, Francesco, Giroletti, Marcello, Gitti, Myriam, Biava, Nadia, De Rubeis, Emanuele, Bonafede, Annalisa, Feretti, Luigina, Bondi, Marco, Bruno, Luca, Liuzzo, Elisabetta, Ignesti, Alessandro, Brunetti, Gianfranco
We present a multi-frequency (144 MHz - 9 GHz) and multi-scale (5 pc - 50 kpc) investigation of the central radio galaxy in RBS 797, by means of JVLA, LOFAR (with international stations), e-Merlin, VLBA and EVN data. We investigate the morphological
Externí odkaz:
http://arxiv.org/abs/2405.08079
Autor:
Edler, H. W., Roberts, I. D., Boselli, A., de Gasperin, F., Heesen, V., Brüggen, M., Ignesti, A., Gajović, L.
Environmental effects such as ram-pressure stripping (RPS) shape the evolution of galaxies in dense regions. We use the nearby Virgo cluster as a laboratory to study environmental effects on the non-thermal components of star-forming galaxies. We con
Externí odkaz:
http://arxiv.org/abs/2311.01904
Autor:
Roberts, I. D., van Weeren, R. J., Lal, D. V., Sun, M., Chen, H., Ignesti, A., Brüggen, M., Lyskova, N., Venturi, T., Yagi, M.
$Aims:$ We used the nearby Coma Cluster as a laboratory in order to probe the impact of ram pressure on star formation as well as to constrain the characteristic timescales and velocities for the stripping of the non-thermal ISM. $Methods:$ We used h
Externí odkaz:
http://arxiv.org/abs/2310.20417
Autor:
Bonafede, A., Gitti, M., La Bella, N., Biava, N., Ubertosi, F., Brunetti, G., Lusetti, G., Brienza, M., Riseley, C. J., Stuardi, C., Botteon, A., Ignesti, A., Röttgering, H., van Weeren, R. J.
In this work, we analysed new LOw Frequency ARray observations of the mini halo in the cluster RBS797, together with archival Very Large Array observations and the recent Chandra results. This cluster is known to host a powerful active galactic nucle
Externí odkaz:
http://arxiv.org/abs/2310.07773
Autor:
Campitiello, M. G., Bonafede, A., Botteon, A., Lovisari, L., Ettori, S., Brunetti, G., Gastaldello, F., Rossetti, M., Cassano, R., Ignesti, A., van Weeren, R. J., Brüggen, M., Hoeft, M.
In this work, we investigated the interplay between the X-ray and radio emission of the cluster PSZ2G113.91-37.01 (z = 0.371) using the high-quality XMM-Newton observations of the CHEX-MATE project, and the images of the LoTSS-DR2. The cluster is und
Externí odkaz:
http://arxiv.org/abs/2310.03645
Autor:
Lourenço, A. C. C., Jaffé, Y. L., Vulcani, B., Biviano, A., Poggianti, B., Moretti, A., Kelkar, K., Crossett, J. P., Gitti, M., Smith, R., Laganá, T. F., Gullieuszik, M., Ignesti, A., McGee, S., Wolter, A., Sonkamble, S., Müller, A.
Theoretical and observational studies have suggested that ram-pressure stripping by the intracluster medium can be enhanced during cluster interactions, boosting the formation of the "jellyfish" galaxies. In this work, we study the incidence of galax
Externí odkaz:
http://arxiv.org/abs/2309.15934