Zobrazeno 1 - 10
of 244
pro vyhledávání: '"David, Laurence P"'
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, 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:
Schellenberger, Gerrit, O'Sullivan, Ewan, Giacintucci, Simona, Vrtilek, Jan, David, Laurence P., Combes, Francoise, Bîrzan, Laura, Pan, Hsi-An, Lin, Lihwai
The galaxy group NGC6338 is one of the most violent group-group mergers known to date. While the central dominant galaxies rush at each other at 1400km/s along the line of sight, with dramatic gas heating and shock fronts detected, the central gas in
Externí odkaz:
http://arxiv.org/abs/2303.08833
Autor:
Schellenberger, Gerrit, Giacintucci, Simona, Lovisari, Lorenzo, O'Sullivan, Ewan, Vrtilek, Jan, David, Laurence P., Melin, Jean-Baptiste, Lal, Dharam Vir, Ettori, Stefano, Kolokythas, Konstantinos, Sereno, Mauro, Raychaudhury, Somak
Mergers between galaxy clusters often drive shocks into the intra cluster medium (ICM), the effects of which are sometimes visible via temperature and density jumps in the X-ray, and via radio emission from relativistic particles energized by the sho
Externí odkaz:
http://arxiv.org/abs/2111.09225
Autor:
Andrade-Santos, Felipe, Pratt, Gabriel W., Melin, Jean-Baptiste, Arnaud, Monique, Jones, Christine, Forman, William R., Pointecouteau, Etienne, Bartalucci, Iacopo, Vikhlinin, Alexey, Murray, Stephen S., Mazzotta, Pasquale, Borgani, Stefano, Lovisari, Lorenzo, van Weeren, Reinout J., Kraft, Ralph P., David, Laurence P., Giacintucci, Simona
Using Chandra observations, we derive the $Y_{\rm X}$ proxy and associated total mass measurement, $M_{500}^{\rm Y_X}$, for 147 clusters with $z \leq 0.35$ from the Planck Early Sunyaev-Zel'dovich catalog, and for 80 clusters with $z \leq 0.30$ from
Externí odkaz:
http://arxiv.org/abs/2103.07545
Autor:
Schellenberger, Gerrit, David, Laurence P., Vrtilek, Jan, O'Sullivan, Ewan, Giacintucci, Simona, Forman, William, Jones, Christine, Venturi, Tiziana
The fate of cooling gas in the centers of galaxy clusters and groups is still not well understood, as is also the case for the complex process of triggering active galactic nucleus (AGN) outbursts in their central dominant galaxies, and the consequen
Externí odkaz:
http://arxiv.org/abs/2010.13804
Autor:
Schellenberger, Gerrit, David, Laurence P., Vrtilek, Jan, O'Sullivan, Ewan, Lim, Jeremy, Forman, William, Sun, Ming, Combes, Francoise, Salome, Philippe, Jones, Christine, Giacintucci, Simona, Edge, Alastair, Gastaldello, Fabio, Temi, Pasquale, Brighenti, Fabrizio, Bardelli, Sandro
The fate of cooling gas in the centers of galaxy clusters and groups is still not well understood, as is also the case for the complex processes of triggering star formation in central dominant galaxies (CDGs), re-heating of cooled gas by AGN, and th
Externí odkaz:
http://arxiv.org/abs/2004.01717
Autor:
Schellenberger, Gerrit, David, Laurence P., O'Sullivan, Ewan, Vrtilek, Jan M., Haines, Chris P.
Abell1758 is a system of two galaxy clusters, a more massive, northern cluster and a southern cluster. Both parts are undergoing major merger events at different stages. Although the mass of the merger constituents provides enough energy to produce v
Externí odkaz:
http://arxiv.org/abs/1907.10581
Autor:
O'Sullivan, Ewan, Schellenberger, Gerrit, Burke, D. J., Sun, Ming, Vrtilek, Jan M., David, Laurence P., Sarazin, Craig
We present deep Chandra, XMM-Newton, Giant Metrewave Radio Telescope and Halpha observations of the group-group merger NGC 6338. X-ray imaging and spectral mapping show that as well as trailing tails of cool, enriched gas, the two cool cores are embe
Externí odkaz:
http://arxiv.org/abs/1906.07710
Autor:
Tremblay, Grant R., Combes, Françoise, Oonk, J. B. Raymond, Russell, Helen R., McDonald, Michael A., Gaspari, Massimo, Husemann, Bernd, Nulsen, Paul E. J., McNamara, Brian R., Hamer, Stephen L., O'Dea, Christopher P., Baum, Stefi A., Davis, Timothy A., Donahue, Megan, Voit, G. Mark, Edge, Alastair C., Blanton, Elizabeth L., Bremer, Malcolm N., Bulbul, Esra, Clarke, Tracy E., David, Laurence P., Edwards, Louise O. V., Eggerman, Dominic A., Fabian, Andrew C., Forman, William R., Jones, Christine, Kerman, Nathaniel, Kraft, Ralph P., Li, Yuan, Powell, Meredith C., Randall, Scott W., Salomé, Philippe, Simionescu, Aurora, Su, Yuanyuan, Sun, Ming, Urry, C. Megan, Vantyghem, Adrian N., Wilkes, Belinda J., ZuHone, John A.
We present ALMA and MUSE observations of the Brightest Cluster Galaxy in Abell 2597, a nearby (z=0.0821) cool core cluster of galaxies. The data map the kinematics of a three billion solar mass filamentary nebula that spans the innermost 30 kpc of th
Externí odkaz:
http://arxiv.org/abs/1808.00473