Zobrazeno 1 - 10
of 8 414
pro vyhledávání: '"Done, A. A."'
Autor:
Suzuki, Hiromasa, Tsuji, Naomi, Kanemaru, Yoshiaki, Shidatsu, Megumi, Olivera-Nieto, Laura, Safi-Harb, Samar, Kimura, Shigeo S., de la Fuente, Eduardo, Casanova, Sabrina, Mori, Kaya, Wang, Xiaojie, Kato, Sei, Tateishi, Dai, Uchiyama, Hideki, Tanaka, Takaaki, Uchida, Hiroyuki, Inoue, Shun, Huang, Dezhi, Lemoine-Goumard, Marianne, Miura, Daiki, Ogawa, Shoji, Kobayashi, Shogo B., Done, Chris, Parra, Maxime, Trigo, María Díaz, Muñoz-Darias, Teo, Padilla, Montserrat Armas, Tomaru, Ryota, Ueda, Yoshihiro
A recent report on the detection of very-high-energy gamma rays from V4641 Sagittarii (V4641 Sgr) up to ~0.8 peta-electronvolt has made it the second confirmed "PeVatron" microquasar. Here we report on the observation of V4641 Sgr with X-Ray Imaging
Externí odkaz:
http://arxiv.org/abs/2412.08089
Autor:
Mochizuki, Yuto, Tsujimoto, Masahiro, Kelley, Richard L., Meulen, Bert Vander, Enoto, Teruaki, Nagai, Yutaro, Done, Chris, Pradhan, Pragati, Hell, Natalie, Pottschmidt, Katja, Ebisawa, Ken, Behar, Ehud
The Fe K$\alpha$ fluorescence line emission in X-ray spectra is a powerful diagnostic tool for various astrophysical objects to reveal the distribution of cold matter around photo-ionizing sources. The advent of the X-ray microcalorimeter onboard the
Externí odkaz:
http://arxiv.org/abs/2411.12978
Autor:
Saccheo, I., Bongiorno, A., Piconcelli, E., Zappacosta, L., Bischetti, M., D'Odorico, V., Done, C., Temple, M. J., Testa, V., Tortosa, A., Brusa, M., Carniani, S., Civano, F., Comastri, A., Cristiani, S., De Cicco, D., Elvis, M., Fan, X., Feruglio, C., Fiore, F., Gallerani, S., Giallongo, E., Gilli, R., Grazian, A., Guainazzi, M., Haardt, F., Maiolino, R., Menci, N., Miniutti, G., Nicastro, F., Paolillo, M., Puccetti, S., Salvestrini, F., Schneider, R., Tombesi, F., Tripodi, R., Valiante, R., Vallini, L., Vanzella, E., Vietri, G., Vignali, C., Vito, F., Volonteri, M., La Franca, F.
We aim at characterizing the X-ray-to-optical/near-infrared broad-band emission of luminous QSOs in the first Gyr of cosmic evolution to understand whether they exhibit differences compared to the lower-\textit{z} QSO population. Our goal is also to
Externí odkaz:
http://arxiv.org/abs/2411.02105
Autor:
Tortosa, A., Zappacosta, L., Piconcelli, E., Bischetti, M., Done, C., Miniutti, G., Saccheo, I., Vietri, G., Bongiorno, A., Brusa, M., Carniani, S., Chilingarian, I. V., Civano, F., Cristiani, S., D'Odorico, V., Elvis, M., Fan, X., Feruglio, C., Fiore, F., Gallerani, S., Giallongo, E., Gilli, R., Grazian, A., Guainazzi, M., Haardt, F., Luminari, A., Maiolino, R., Menci, N., Nicastro, F., Petrucci, P. O., Puccetti, S., Salvestrini, F., Schneider, R., Testa, V., Tombesi, F., Tripodi, R., Valiante, R., Vallini, L., Vanzella, E., Vasylenko, A., Vignali, C., Vito, F., Volonteri, M., La Franca, F.
One of the main open questions in the field of luminous ($L_{\rm bol}>10^{47}\,\rm erg\,s^{-1}$) quasars (QSOs) at $z \gtrsim 6$ is the rapid formation ($< 1\,$Gyr) of their supermassive black holes (SMBHs). For this work we analysed the relation bet
Externí odkaz:
http://arxiv.org/abs/2410.12786
Autor:
Kang, Jia-Lai, Done, Chris, Hagen, Scott, Temple, Matthew J., Silverman, John D., Li, Junyao, Liu, Teng
A recent study on the spectral energy distribution (SED) of AGN combined unobscured X-ray sources from the eROSITA eFEDS Survey with high quality optical imaging from Subaru's Hyper Suprime-Cam (HSC). The HSC data enabled accurate host galaxy subtrac
Externí odkaz:
http://arxiv.org/abs/2410.06730
Autor:
Gianolli, V. E., Bianchi, S., Kammoun, E., Gnarini, A., Marinucci, A., Ursini, F., Parra, M., Tortosa, A., De Rosa, A., Kim, D. E., Marin, F., Matt, G., Serafinelli, R., Soffitta, P., Tagliacozzo, D., Di Gesu, L., Done, C., Marshall, H. L., Middei, R., Mikusincova, R., Petrucci, P-O., Ravi, S., Svoboda, J., Tombesi, F.
Publikováno v:
A&A 691, A29 (2024)
We report on the second observing program of the active galactic nucleus NGC 4151 with simultaneous Imaging X-ray Polarimetry Explorer (IXPE; {\sim}750 ks), NuSTAR ({\sim}60 ks), XMM-Newton ({\sim}75 ks), and NICER ({\sim}65 ks) pointings. NGC 4151 i
Externí odkaz:
http://arxiv.org/abs/2407.17243
Autor:
Hagen, Scott, Done, Chris, Silverman, John D., Li, Junyao, Liu, Teng, Ren, Wenke, Buchner, Johannes, Merloni, Andrea, Nagao, Tohru, Salvato, Mara
The structure of the accretion flow onto supermassive black holes (SMBH) is not well understood. Standard disc models match to zeroth order in predicting substantial energy dissipation within optically-thick material producing a characteristic strong
Externí odkaz:
http://arxiv.org/abs/2406.06674
Autor:
Barnier, Samuel, Done, Chris
Large scale, strong magnetic fields are often evoked in black hole accretion flows, for jet launching in the low/hard state and to circumvent the thermal instability in the high/soft state. Here we show how these ideas are strongly challenged by X-ra
Externí odkaz:
http://arxiv.org/abs/2404.12815
Autor:
Veresvarska, M., Scaringi, S., Hagen, S., De Martino, D., Done, C., Ilkiewicz, K., Knigge, C., Littlefield, C.
The classical nova CP Puppis has been observed to have particularly puzzling and peculiar properties. In particular, this classical nova displays occasional bursts in its long-term ASAS-SN light curve. Here we report on 5 sectors of TESS data display
Externí odkaz:
http://arxiv.org/abs/2402.14068
Autor:
Bobrikova, Anna, Forsblom, Sofia V., Di Marco, Alessandro, La Monaca, Fabio, Poutanen, Juri, Ng, Mason, Ravi, Swati, Loktev, Vladislav, Kajava, Jari J. E., Ursini, Francesco, Veledina, Alexandra, Rogantini, Daniele, Salmi, Tuomo, Bianchi, Stefano, Capitanio, Fiamma, Done, Chris, Fabiani, Sergio, Gnarini, Andrea, Heyl, Jeremy, Kaaret, Philip, Matt, Giorgio, Muleri, Fabio, Nitindala, Anagha P., Rankin, John, Weisskopf, Martin C., Agudo, Ivan, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolo, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccolo, Donnarumma, Immacolata, Doroshenko, Victor, Dovciak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, Latronico, Luca, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marin, Frederic, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Massaro, Francesco, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Negro, Michela, 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, Puccetti, Simonetta, Ramsey, Brian D., Ratheesh, Ajay J., Roberts, Oliver, Romani, Roger W., Sgro, Carmelo, Slane, Patrick, Soffitta, Paolo, 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, Xie, Fei, Zane, Silvia
Publikováno v:
A&A 688, A170 (2024)
Weakly magnetized neutron stars in X-ray binaries show complex phenomenology with several spectral components that can be associated with the accretion disk, boundary and/or spreading layer, a corona, and a wind. Spectroscopic information alone is, h
Externí odkaz:
http://arxiv.org/abs/2401.13058