Zobrazeno 1 - 10
of 783
pro vyhledávání: '"Porquet, D"'
Autor:
Reeves, J. N., Braito, V., Luminari, A., Porquet, D., Laurenti, M., Matzeu, G., Lobban, A., Hagen, S.
PG 1448+273 is a luminous, nearby ($z=0.0645$), narrow line Seyfert 1 galaxy, which likely accretes close to the Eddington limit. Previous X-ray observations of PG 1448 with XMM-Newton in 2017 and NuSTAR in 2022 revealed the presence of an ultra fast
Externí odkaz:
http://arxiv.org/abs/2408.15095
Autor:
Shen, Yue, Casey-Clyde, J. Andrew, Chen, Yu-Ching, Gross, Arran, Habouzit, Melanie, Hwang, Hsiang-Chih, Ishikawa, Yuzo, Li, Jun-Yao, Liu, Xin, Mingarelli, Chiara M. F., Porquet, D., Stemo, Aaron, Zhuang, Ming-Yang
The hierarchical structure formation paradigm predicts the formation of pairs of supermassive black holes in merging galaxies. When both (or one) members of the SMBH pair are unobscured AGNs, the system can be identified as a dual (or offset) AGN. Qu
Externí odkaz:
http://arxiv.org/abs/2306.15527
Publikováno v:
A&A 654, A89 (2021)
(Abridged) Soft and hard X-ray excesses, compared to the continuum power-law shape between ~2-10 keV, are common features observed in the spectra of active galactic nuclei (AGN) and are associated with the accretion disc-corona system around the supe
Externí odkaz:
http://arxiv.org/abs/2107.06733
Six XMM-Newton observations of the bright narrow line Seyfert 1, Mrk 110, from 2004-2020, are presented. The analysis of the grating spectra from the Reflection Grating Spectrometer (RGS) reveals a broad component of the He-like Oxygen (OVII) line, w
Externí odkaz:
http://arxiv.org/abs/2104.14584
Autor:
Mereghetti, S., Balman, S., Caballero-Garcia, M., Del Santo, M., Doroshenko, V., Erkut, M. H., Hanlon, L., Hoeflich, P., Markowitz, A., Osborne, J. P., Pian, E., Sandoval, L. Rivera, Webb, N., Amati, L., Ambrosi, E., Beardmore, A. P., Blain, A., Bozzo, E., Burderi, L., Campana, S., Casella, P., D'Aì, A., D'Ammando, F., De Colle, F., Della Valle, M., De Martino, D., Di Salvo, T., Doyle, M., Esposito, P., Frontera, F., Gandhi, P., Ghisellini, G., Gotz, D., Grinberg, V., Guidorzi, C., Hudec, R., Iaria, R., Izzo, L., Jaisawal, G. K., Jonker, P., Kong, A. K. H., Krumpe, M., Kumar, P., Manousakis, A., Marino, A., Martin-Carrillo, A., Mignani, R., Miniutti, G., Mundell, C. G., Mukai, K., Nucita, A. A., O'Brien, P. T., Orlandini, M., Orio, M., Palazzi, E., Papitto, A., Pintore, F., Piranomonte, S., Porquet, D., Ricci, C., Riggio, A., Rigoselli, M., Rodriguez, J., Saha, T., Sanna, A., Santangelo, A., Saxton, R., Sidoli, L., Stiele, H., Tagliaferri, G., Tavecchio, F., Tiengo, A., Tsygankov, S., Turriziani, S., Wijnands, R., Zane, S., Zhang, B.
THESEUS is a medium size space mission of the European Space Agency, currently under evaluation for a possible launch in 2032. Its main objectives are to investigate the early Universe through the observation of gamma-ray bursts and to study the grav
Externí odkaz:
http://arxiv.org/abs/2104.09533
Autor:
Rosati, P., Basa, S., Blain, A. W., Bozzo, E., Branchesi, M., Christensen, L., Ferrara, A., Gomboc, A., O'Brien, P. T., Osborne, J. P., Rossi, A., Schüssler, F., Spurio, M., Stergioulas, N., Stratta, G., Amati, L., Casewell, S., Ciolfi, R., Ghirlanda, G., Grimm, S., Guetta, D., Harms, J., Floc'h, E. Le, Longo, F., Maggiore, M., Mereghetti, S., Oganesyan, G., Salvaterra, R., Tanvir, N. R., Turriziani, S., Vergani, S. D., Balman, S., Caruana, J., Erkut, M. H., Guidorzi, G., Frontera, F., Martin-Carrillo, A., Paltani, S., Porquet, D., Sergijenko, O.
The proposed THESEUS mission will vastly expand the capabilities to monitor the high-energy sky, and will exploit large samples of gamma-ray bursts to probe the early Universe back to the first generation of stars, and to advance multi-messenger astr
Externí odkaz:
http://arxiv.org/abs/2104.09535
Autor:
Matzeu, G. A., Nardini, E., Parker, M. L., Reeves, J. N., Braito, V., Porquet, D., Middei, R., Kammoun, E., Lusso, E., Alston, W. N., Giustini, M., Lobban, A. P., Joyce, A. M., Igo, Z., Ebrero, J., Ballo, L., Santos-Lleó, M., Schartel, N.
We present joint \textit{XMM-Newton} and \textit{NuSTAR} observations of the `bare' narrow line Seyfert 1 Ton S180 ($z=0.062$), carried out in 2016 and providing the first hard X-ray view of this luminous galaxy. We find that the 0.4--30 keV band can
Externí odkaz:
http://arxiv.org/abs/2007.06575
Autor:
Lombardo, S., Prada, F., Hugot, E., Basa, S., Bautista, J. M., Boissier, S., Boselli, A., Bosma, A., Cuillandre, J. C., Duc, P. A., Ferrari, M., Grosso, N., Izzo, L., Joaquina, K., Junais, Koda, J., Lamberts, A., Lemaitre, G. R., Longobardi, A., Martínez-Delgado, D., Muslimov, E., Ortiz, J. L., Perez, E., Porquet, D., Sicardy, B., Vola, P.
We present here the Calar Alto Schmidt-Lemaitre Telescope (CASTLE) concept, a technology demonstrator for curved detectors, that will be installed at the Calar Alto Observatory (Spain). This telescope has a wide field of view (2.36x1.56 deg^2) and a
Externí odkaz:
http://arxiv.org/abs/2006.13956
Autor:
Lobban, A. P., Zola, S., Pajdosz-Smierciak, U., Braito, V., Nardini, E., Bhatta, G., Markowitz, A., Bachev, R., Carosati, D., Caton, D. B., Damljanovic, G., Debski, B., Haislip, J. B., Hu, S. M., Kouprianov, V., Krzesinski, J., Porquet, D., Nunez, F. Pozo, Reeves, J., Reichart, D. E.
We report on the results of a multiwavelength monitoring campaign of the bright, nearby Seyfert galaxy, Ark 120 using a ~50-day observing programme with Swift and a ~4-month co-ordinated ground-based observing campaign, predominantly using the Skynet
Externí odkaz:
http://arxiv.org/abs/2002.12348
Autor:
Nicastro, F., Kaastra, J., Argiroffi, C., Behar, E., Bianchi, S., Bocchino, F., Borgani, S., Branduardi-Raymont, G, Bregman, J., Churazov, E., Diaz-Trigo, M., Done, C., Drake, J., Fang, T., Grosso, N., Luminari, A., Mehdipour, M., Paerels, F., Piconcelli, E., Pinto, C., Porquet, D., Reeves, J., Schaye, J., Sciortino, S., Smith, R., Spiga, D., Tomaru, R., Tombesi, F., Wijers, N., Zappacosta, L.
Metals form an essential part of the Universe at all scales. Without metals we would not exist, and the Cosmos would look completely different. Metals are primarily born through nuclear processes in stars. They leave their cradles through winds or ex
Externí odkaz:
http://arxiv.org/abs/1909.02454