Zobrazeno 1 - 10
of 772
pro vyhledávání: '"Forman, William"'
Autor:
Machacek, Marie E., Jones, Christine, Kraft, Ralph P., Forman, William R., Roediger, Elke, Sheardown, Alex, Wan, Jenny T.
Publikováno v:
The Astrophysical Journal, 958, (2023), 93
Analyses of major group mergers are key to understanding the evolution of large-scale structure in the Universe and the microphysical properties of the hot gas in these systems. We present imaging and spectral analyses of deep Chandra observations of
Externí odkaz:
http://arxiv.org/abs/2410.06196
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:
Sarkar, Arnab, Chakraborty, Priyanka, Vogelsberger, Mark, McDonald, Michael, Torrey, Paul, Garcia, Alex M., Khullar, Gourav, Ferland, Gary J., Forman, William, Wolk, Scott, Schneider, Benjamin, Bautz, Mark, Miller, Eric, Grant, Catherine, ZuHone, John
We present star formation rates (SFR), the mass-metallicity relation (MZR), and the SFR-dependent MZR across redshifts 4 to 10 using 81 star-forming galaxies observed by the JWST NIRSpec employing both low-resolution PRISM and medium-resolution grati
Externí odkaz:
http://arxiv.org/abs/2408.07974
Based on a proposal to observe 18 bright radio sources from the SMS4 catalog with the Neil Gehrels Swift Observatory (hereafter Swift), we obtained X-ray observations of 17 targets (one target was not observed). Following up our first paper that disc
Externí odkaz:
http://arxiv.org/abs/2407.06024
Autor:
Kovacs, Orsolya E., Bogdan, Akos, Natarajan, Priyamvada, Werner, Norbert, Azadi, Mojegan, Volonteri, Marta, Tremblay, Grant R., Chadayammuri, Urmila, Forman, William R., Jones, Christine, Kraft, Ralph P.
While supermassive black holes (BHs) are widely observed in the nearby and distant universe, their origin remains debated with two viable formation scenarios with light and heavy seeds. In the light seeding model, the first BHs form from the collapse
Externí odkaz:
http://arxiv.org/abs/2403.14745
Autor:
Whyley, Arthur, Randall, Scott W., Clarke, Tracy E., van Weeren, Reinout J., Rajpurohit, Kamlesh, Forman, William R., Edge, Alastair C., Blanton, Elizabeth L., Lovisari, Lorenzo, Intema, Huib T.
Ultra-steep spectrum (USS) radio sources with complex filamentary morphologies are a poorly understood subclass of diffuse radio source found in galaxy clusters. They are characterised by power law spectra with spectral indices less than -1.5, and ar
Externí odkaz:
http://arxiv.org/abs/2402.04876
Autor:
Heinrich, Annie, Zhuravleva, Irina, Zhang, Congyao, Churazov, Eugene, Forman, William, van Weeren, Reinout J.
The hot intracluster medium (ICM) provides a unique laboratory to test multi-scale physics in numerical simulations and probe plasma physics. Utilizing archival Chandra observations, we measure density fluctuations in the ICM in a sample of 80 nearby
Externí odkaz:
http://arxiv.org/abs/2401.15179
Autor:
Sarkar, Arnab, Andrade-Santos, Felipe, van Weeren, Reinout J., Kraft, Ralph P., Hoang, Duy N., Shimwell, Timothy W., Nulsen, Paul, Forman, William, Randall, Scott, Su, Yuanyuan, Chakraborty, Priyanka, Jones, Christine, Miller, Eric, Bautz, Mark, Grant, Catherine E.
We present a 368 ks deep Chandra observation of Abell~1240, a binary merging galaxy cluster at a redshift of 0.195 with two Brightest Cluster Galaxies (BCGs) may have passed each other 0.3 Gyr ago. Building upon previous investigations involving GMRT
Externí odkaz:
http://arxiv.org/abs/2401.02000
Autor:
Hou, Meicun, He, Lin, Hu, Zhensong, Li, Zhiyuan, Jones, Christine, Forman, William, Su, Yuanyuan, Wang, Jing, Ho, Luis C.
We present a systematic study of the putative hot gas corona around late-type galaxies (LTGs) residing in the Virgo cluster, based on archival Chandra observations. Our sample consists of 21 nearly edge-on galaxies representing a star formation rate
Externí odkaz:
http://arxiv.org/abs/2312.04050
Autor:
Churazov, Eugene, Khabibullin, Ildar, Barnouin, Thibault, Bucciantini, Niccolò, Costa, Enrico, Di Gesu, Laura, Di Marco, Alessandro, Ferrazzoli, Riccardo, Forman, William, Kaaret, Philip, Kim, Dawoon E., Kolodziejczak, Jeffery J., Kraft, Ralph, Marin, Frédéric, Matt, Giorgio, Negro, Michela, Romani, Roger W., Silvestri, Stefano, Soffitta, Paolo, Sunyaev, Rashid, Svoboda, Jiri, Vikhlinin, Alexey, Weisskopf, Martin C., Xie, Fei, Agudo, Iván, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Capitanio, Fiamma, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, De Rosa, Alessandra, Del Monte, Ettore, Di Lalla, Niccolò, Donnarumma, Immacolata, Doroshenko, Victor, Dovčiak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, García, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Heyl, Jeremy, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Krawczynski, Henric, La Monaca, Fabio, Latronico, Luca, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Massaro, Francesco, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Muleri, Fabio, Ng, Chi-Yung, O'Dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Pilia, Maura, Possenti, Andrea, Poutanen, Juri, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Ratheesh, Ajay, Roberts, Oliver J., Sgrò, Carmelo, Slane, Patrick, Spandre, Gloria, Swartz, Douglas A., Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Tsygankov, Sergey S., Turolla, Roberto, Vink, Jacco, Wu, Kinwah, Zane, Silvia
Publikováno v:
A&A 686, A14 (2024)
We report the discovery of X-ray polarization from the X-ray-bright filament. G0.13-0.11 in the Galactic center (GC) region. This filament features a bright, hard X-ray source that is most plausibly a pulsar wind nebula (PWN) and an extended and stru
Externí odkaz:
http://arxiv.org/abs/2312.04421