Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ubertosi, Francesco"'
Autor:
Ubertosi, Francesco, Giacintucci, Simona, Clarke, Tracy, Markevitch, Maxim, Venturi, Tiziana, O'Sullivan, Ewan, Gitti, Myriam
Publikováno v:
A&A 691, A294 (2024)
The galaxy cluster Abell 496 has been extensively studied in the past for the clear sloshing motion of the hot gas on large scales, but the interplay between the central radio galaxy and the surrounding cluster atmosphere is mostly unexplored. We pre
Externí odkaz:
http://arxiv.org/abs/2409.15440
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:
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
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:
Rosignoli, Luca, Ubertosi, Francesco, Gitti, Myriam, Brighenti, Fabrizio, Pasini, Thomas, O'Sullivan, Ewan, Gastaldello, Fabio, Gaspari, Massimo, Temi, Pasquale
We present the analysis of new, deep $Chandra$ observations (130~ks) of the galaxy cluster Abell~2495. This object is known for the presence of a triple offset between the peaks of the intracluster medium (ICM), the brightest cluster galaxy (BCG), an
Externí odkaz:
http://arxiv.org/abs/2312.12855
Autor:
Ubertosi, Francesco, Schellenberger, Gerrit, O'Sullivan, Ewan, Vrtilek, Jan, Giacintucci, Simona, David, Laurence P., Forman, William, Gitti, Myriam, Venturi, Tiziana, Jones, Christine, Brighenti, Fabrizio
Recent observations of galaxy clusters and groups with misalignments between their central AGN jets and X-ray cavities, or with multiple misaligned cavities, have raised concerns about the jet - bubble connection in cooling cores, and the processes r
Externí odkaz:
http://arxiv.org/abs/2312.02283
Autor:
Ubertosi, Francesco, Gitti, Myriam, Brighenti, Fabrizio, Olivares, Valeria, O'Sullivan, Ewan, Schellenberger, Gerrit
Publikováno v:
A&A 673, A52 (2023)
The investigation of the feedback cycle in galaxy clusters has historically been performed for systems where feedback is ongoing ("mature-feedback" clusters), that is where the central radio galaxy has inflated radio lobes, pushing aside the intraclu
Externí odkaz:
http://arxiv.org/abs/2303.04821
Autor:
Calzadilla, Michael S., McDonald, Michael, Donahue, Megan, McNamara, Brian R., Fogarty, Kevin, Gaspari, Massimo, Gitti, Myriam, Russell, Helen R., Tremblay, Grant R., Voit, G. Mark, Ubertosi, Francesco
We present new, deep, narrow- and broad-band Hubble Space Telescope observations of seven of the most star-forming brightest cluster galaxies (BCGs). Continuum-subtracted [O II] maps reveal the detailed, complex structure of warm ($T \sim 10^4$ K) io
Externí odkaz:
http://arxiv.org/abs/2207.01624
Autor:
Ubertosi, Francesco, Gitti, Myriam, Brighenti, Fabrizio, Brunetti, Gianfranco, McDonald, Michael, Nulsen, Paul, McNamara, Brian, Randall, Scott, Forman, William, Donahue, Megan, Ignesti, Alessandro, Gaspari, Massimo, Ettori, Stefano, Feretti, Luigina, Blanton, Elizabeth L., Jones, Christine, Calzadilla, Michael S.
We present the first results of a deep $Chandra$ observation of the galaxy cluster RBS 797, whose previous X-ray studies revealed two pronounced X-ray cavities in the east-west (E-W) direction. Follow-up VLA radio observations of the central active g
Externí odkaz:
http://arxiv.org/abs/2111.03679
Publikováno v:
Astron. Nachr., 1 (2021)
We present a detailed study of the galaxy cluster Abell 795 and of its central Fanaroff-Riley Type 0 (FR0) radio galaxy. From an archival Chandra observation, we found a dynamically disturbed environment with evidences for sloshing of the intracluste
Externí odkaz:
http://arxiv.org/abs/2111.02160