Zobrazeno 1 - 10
of 1 202
pro vyhledávání: '"Christensen F"'
Autor:
CAST Collaboration, Altenmüller, K., Anastassopoulos, V., Arguedas-Cuendis, S., Aune, S., Baier, J., Barth, K., Bräuninger, H., Cantatore, G., Caspers, F., Castel, J. F., Çetin, S. A., Christensen, F., Cogollos, C., Dafni, T., Davenport, M., Decker, T. A., Desch, K., Díez-Ibáñez, D., Döbrich, B., Ferrer-Ribas, E., Fischer, H., Funk, W., Galán, J., García, J. A., Gardikiotis, A., Giomataris, I., Golm, J., Hailey, C. H., Hasinoff, M. D., Hoffmann, D. H. H., Irastorza, I. G., Jacoby, J., Jakobsen, A. C., Jakovčić, K., Kaminski, J., Karuza, M., Kostoglou, S., Krieger, C., Lakić, B., Laurent, J. M., Luzón, G., Malbrunot, C., Margalejo, C., Maroudas, M., Miceli, L., Mirallas, H., Navarro, P., Obis, L., Özbey, A., Özbozduman, K., Papaevangelou, T., Pérez, O., Pivovaroff, M. J., Rosu, M., Ruiz-Chóliz, E., Ruz, J., Schmidt, S., Schumann, M., Semertzidis, Y. K., Solanki, S. K., Stewart, L., Vafeiadis, T., Vogel, J. K., Zioutas, K.
Publikováno v:
Phys. Rev. Lett. 133, 221005, 2024
Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope (CAST) has been searching for solar axions via their back conversion to X-ray photons in a 9-T 10-m
Externí odkaz:
http://arxiv.org/abs/2406.16840
Autor:
Basso, S., Salmaso, B., Spiga, D., Ghigo, M., Vecchi, G., Sironi, G., Cotroneo, V., Conconi, P., Redaelli, E., Bianco, A., Pareschi, G., Tagliaferri, G., Sisana, D., Pelliciari, C., Fiorini, M., Incorvaia, S., Uslenghi, M., Paoletti, L., Ferrari, C., Lolli, R., Zappettini, A., del Rio, M. Sanchez, Parodi, G., Burwitz, V., Rukdee, S., Hartner, G., Müller, T., Schmidt, T., Langmeier, A., Ferreira, D. Della Monica, Massahi, S., Gellert, N. C., Christensen, F., Bavdaz, M., Ferreira, I., Collon, M., Vacanti, G., Barrière, N. M.
The Beam Expander Testing X-ray facility (BEaTriX) is a unique X-ray apparatus now operated at the Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Brera (OAB), in Merate, Italy. It has been specifically designed to measure the p
Externí odkaz:
http://arxiv.org/abs/2206.15468
Autor:
Abeln, A., Altenmüller, K., Cuendis, S. Arguedas, Armengaud, E., Attié, D., Aune, S., Basso, S., Bergé, L., Biasuzzi, B., De Sousa, P. T. C. Borges, Brun, P., Bykovskiy, N., Calvet, D., Carmona, J. M., Castel, J. F., Cebrián, S., Chernov, V., Christensen, F. E., Civitani, M. M., Cogollos, C., Dafní, T., Derbin, A., Desch, K., Díez, D., Dinter, M., Döbrich, B., Drachnev, I., Dudarev, A., Dumoulin, L., Ferreira, D. D. M., Ferrer-Ribas, E., Fleck, I., Galán, J., Gascón, D., Gastaldo, L., Giannotti, M., Giomataris, Y., Giuliani, A., Gninenko, S., Golm, J., Golubev, N., Hagge, L., Hahn, J., Hailey, C. J., Hengstler, D., Henriksen, P. L., Houdy, T., Iglesias-Marzoa, R., Iguaz, F. J., Irastorza, I. G., Iñiguez, C., Jakovcic, K., Kaminski, J., Kanoute, B., Karstensen, S., Kravchuk, L., Lakic, B., Lasserre, T., Laurent, P., Limousin, O., Lindner, A., Loidl, M., Lomskaya, I., López-Alegre, G., Lubsandorzhiev, B., Ludwig, K., Luzón, G., Malbrunot, C., Margalejo, C., Marin-Franch, A., Marnieros, S., Marutzky, F., Mauricio, J., Menesguen, Y., Mentink, M., Mertens, S., Mescia, F., Miralda-Escudé, J., Mirallas, H., Mols, J. P., Muratova, V., Navick, X. F., Nones, C., Notari, A., Nozik, A., Obis, L., Oriol, C., Orsini, F., de Solórzano, A. Ortiz, Oster, S., Da Silva, H. P. Pais, Pantuev, V., Papaevangelou, T., Pareschi, G., Perez, K., Pérez, O., Picatoste, E., Pivovaroff, M. J., Poda, D. V., Redondo, J., Ringwald, A., Rodrigues, M., Rueda-Teruel, F., Rueda-Teruel, S., Ruiz-Choliz, E., Ruz, J., Saemann, E. O., Salvado, J., Schiffer, T., Schmidt, S., Schneekloth, U., Schott, M., Segui, L., Tavecchio, F., Kate, H. H. J. ten, Tkachev, I., Troitsky, S., Unger, D., Unzhakov, E., Ushakov, N., Vogel, J. K., Voronin, D., Weltman, A., Werthenbach, U., Wuensch, W., Yanes-Díaz, A.
This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produce
Externí odkaz:
http://arxiv.org/abs/2010.12076
Autor:
Baloković M., Ajello M., Blandford R. D., Boggs S. E., Borracci F., Chiang J., Christensen F. E., Craig W. W., Forster K., Furniss A., Fürst F., Ghisellini G., Giebels B., Giommi P., Grefenstette B. W., Hailey C. J., Harrison F. A., Hayashida M., Humensky B., Inoue Y., Koglin J. E., Krawczynski H., Madejski G. M., Madsen K. K., Meier D. L., Nelson T., Ogle P., Paneque D., Perri M., Puccetti S., Reynolds C. S., Sbarrato T., Stern D., Tagliaferri G., Urry C. M., Wehrle A. E., Zhang W. W.
Publikováno v:
EPJ Web of Conferences, Vol 61, p 04013 (2013)
Mkn 421 is a nearby active galactic nucleus dominated at all wavelengths by a very broad nonthermal continuum thought to arise from a relativistic jet seen at a small angle to the line of sight. Its spectral energy distribution peaks in the X-ray and
Externí odkaz:
https://doaj.org/article/45522e9c5586453f8fb7581303570333
Autor:
Middleton, M. J., Walton, D. J., Alston, W., Dauser, T., Eikenberry, S., Jiang, Y-F, Fabian, A. C., Fuerst, F., Brightman, M., Marshall, H., Parker, M., Pinto, C., Harrison, F. A., Bachetti, M., Altamirano, D., Bird, A. J., Perez, G., Miller-Jones, J., Charles, P. A., Boggs, S., Christensen, F., Craig, W., Forster, K., Grefenstette, B., Hailey, C., Madsen, K., Stern, D., Zhang, W.
SS433 is the only Galactic binary system known to persistently accrete at highly super-critical (or hyper-critical) rates, similar to those in tidal disruption events, and likely needed to explain the rapid growth of those very high redshift quasars
Externí odkaz:
http://arxiv.org/abs/1810.10518
Autor:
Anastassopoulos, V., Aune, S., Barth, K., Belov, A., Bräuninger, H., Cantatore, G., Carmona, J. M., Castel, J. F., Cetin, S. A., Christensen, F., Dafni, T., Davenport, M., Dermenev, A., Desch, K., Döbrich, B., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Fischer, H., Funk, W., García, J. A., Gardikiotis, A., Garza, J. G., Gazis, E. N., Geralis, T., Giomataris, I., Gninenko, S., Hailey, C. J., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jakobsen, A., Jacoby, J., Jakovčić, K., Kaminski, J., Karuza, M., Kostoglou, S., Kralj, N., Krčmar, M., Krieger, C., Lakić, B., Laurent, J. M., Liolios, A., Ljubičić, A., Luzón, G., Maroudas, M., Miceli, L., Neff, S., Ortega, I., Papaevangelou, T., Paraschou, K., Pivovaroff, M. J., Raffelt, G., Rosu, M., Ruz, J., Chóliz, E. Ruiz, Savvidis, I., Schmidt, S., Semertzidis, Y. K., Solanki, S. K., Stewart, L., Vafeiadis, T., Vogel, J. K., Vretenar, M., Wuensch, W., Yildiz, S. C., Zioutas, K., Brax, P.
We report on a new search for solar chameleons with the CERN Axion Solar Telescope (CAST). A GridPix detector was used to search for soft X-ray photons in the energy range from 200 eV to 10 keV from converted solar chameleons. No signiffcant excess o
Externí odkaz:
http://arxiv.org/abs/1808.00066
Autor:
Porquet, D., Reeves, J. N., Matt, G., Marinucci, A., Nardini, E., Braito, V., Lobban, A., Ballantyne, D. R., Boggs, S. E., Christensen, F. E., Dauser, T., Farrah, D., Garcia, J., Hailey, C. J., Harrison, F., Stern, D., Tortosa, A., Ursini, F., Zhang, W. W.
Publikováno v:
A&A 609, A42 (2018)
We perform an X-ray spectral analysis of the brightest and cleanest bare AGN known so far, Ark 120, in order to determine the process(es) at work in the vicinity of the SMBH. We present spectral analysis of data from an extensive campaign observing A
Externí odkaz:
http://arxiv.org/abs/1707.08907
Autor:
CAST collaboration, Anastassopoulos, V., Aune, S., Barth, K., Belov, A., Brauninger, H., Cantatore, G., Carmona, J. M., Castel, J. F., Cetin, S. A., Christensen, F., Collar, J. I., Dafni, T., Davenport, M., Decker, T. A., Dermenev, A., Desch, K., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Fischer, H., Garcia, J. A., Gardikiotis, A., Garza, J. G., Gazis, E. N., Geralis, T., Giomataris, I., Gninenko, S., Hailey, C. J., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jakobsen, A., Jacoby, J., Jakovcic, K., Kaminski, J., Karuza, M., Kralj, N., Krcmar, M., Kostoglou, S., Krieger, Ch., Lakic, B., Laurent, J. M., Liolios, A., Ljubicic, A., Luzon, G., Maroudas, M., Miceli, L., Neff, S., Ortega, I., Papaevangelou, T., Paraschou, K., Pivovaroff, M. J., Raffelt, G., Rosu, M., Ruz, J., Choliz, E. Ruiz, Savvidis, I., Schmidt, S., Semertzidis, Y. K., Solanki, S. K., Stewart, L., Vafeiadis, T., Vogel, J. K., Yildiz, S. C., Zioutas, K.
Publikováno v:
Nature Phys. 13 (2017) 584-590
During 2003--2015, the CERN Axion Solar Telescope (CAST) has searched for $a\to\gamma$ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. In its final phase of solar axion searches (2013--2015),
Externí odkaz:
http://arxiv.org/abs/1705.02290
Autor:
Zoghbi, Abderahmen, Matt, G., Miller, J. M., Lohfink, A. M., Walton, D. J., Ballantyne, D. R., Garcia, J. A., Stern, D., Koss, M. J., Farrah, D., Harrison, F. A., Boggs, S. E., Christensen, F. E., Craig, W., Hailey, C. J., Zhang, W. W.
MCG-5-23-16 was targeted in early 2015 with a half mega-seconds observing campaign using NuSTAR. Here we present the spectral analysis of these datasets along with an earlier observation and study the relativistic reflection and the primary coronal s
Externí odkaz:
http://arxiv.org/abs/1701.02309
A New Compton-thick AGN in our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR
Autor:
Annuar, A., Alexander, D. M., Gandhi, P., Lansbury, G. B., Asmus, D., Ballantyne, D. R., Bauer, F. E., Boggs, S. E., Boorman, P. G., Brandt, W. N., Brightman, M., Christensen, F. E., Craig, W. W., Farrah, D., Goulding, A. D., Hailey, C. J., Harrison, F. A., Koss, M. J., LaMassa, S. M., Murray, S. S., Ricci, C., Rosario, D. J., Stanley, F., Stern, D., Zhang, W.
NGC 1448 is one of the nearest luminous galaxies ($L_{8-1000\mu m} >$ 10$^{9} L_{\odot}$) to ours ($z$ $=$ 0.00390), and yet the active galactic nucleus (AGN) it hosts was only recently discovered, in 2009. In this paper, we present an analysis of th
Externí odkaz:
http://arxiv.org/abs/1701.00497