CHEOPS in-flight performance: A comprehensive look at the first 3.5 years of operations

Autor: Fortier, A., Simon, A. E., Broeg, C., Olofsson, G., Deline, A., Wilson, T. G., Maxted, P. F. L., Brandeker, A., Cameron, A. Collier, Beck, M., Bekkelien, A., Billot, N., Bonfanti, A., Bruno, G., Cabrera, J., Delrez, L., Demory, B. -O., Futyan, D., Florén, H. -G., Günther, M. N., Heitzmann, A., Hoyer, S., Isaak, K. G., Sousa, S. G., Stalport, M., Turin, A., Verhoeve, P., Akinsanmi, B., Alibert, Y., Alonso, R., Bánhidi, D., Bárczy, T., Barrado, D., Barros, S. C., Baumjohann, W., Baycroft, T., Beck, T., Benz, W., Bíró, B. I., Bódi, A., Bonfils, X., Borsato, L., Charnoz, S., Cseh, B., Csizmadia, Sz., Csányi, I., Cubillos, P. E., Davies, M. B., Davis, Y. T., Deleuil, M., Demangeon, O. D. S., Derekas, A., Dransfield, G., Ducrot, E., Ehrenreich, D., Erikson, A., Fariña, C., Fossati, L., Fridlund, M., Gandolfi, D., Garai, Z., Garcia, L., Gillon, M., Chew, Y. Gómez Maqueo, Gómez-Muñoz, M. A., Granata, V., Güdel, M., Guterman, P., Hegedüs, T., Helling, Ch., Jehin, E., Kalup, Cs., Kilkenny, D., Kiss, L., Kriskovics, L., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Lendl, M., Pina, A. Lopez, Luntzer, A., Magrin, D., Miller, N. J., Contreras, D. Modrego, Mordasini, C., Munari, M., Murray, C. A., Nascimbeni, V., Ottacher, H., Ottensamer, R., Pagano, I., Pál, A., Pallé, E., Pasetti, A., Pedersen, P., Peter, G., Petrucci, R., Piotto, G., Pizarro-Rubio, A., Pollacco, D., Pribulla, T., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Sabin, L., Santos, N. C., Scandariato, G., Schanche, N., Schroffenegger, U., Scutt, O. J., Sebastian, D., Ségransan, D., Seli, B., Smith, A. M. S., Southworth, R., Standing, M. R., Szabó, M. Gy., Szakáts, R., Thomas, N., Timmermans, M., Triaud, A. H. M. J., Udry, S., Van Grootel, V., Venturini, J., Villaver, E., Vinkó, J., Walton, N. A., Wells, R., Wolter, D.

CHEOPS is a space telescope specifically designed to monitor transiting exoplanets orbiting bright stars. In September 2023, CHEOPS completed its nominal mission and remains in excellent operational conditions. The mission has been extended until the

Externí odkaz: http://arxiv.org/abs/2406.01716

Detailed cool star flare morphology with CHEOPS and TESS

Autor: Bruno, G., Pagano, I., Scandariato, G., Florén, H. -G., Brandeker, A., Olofsson, G., Maxted, P. F. L., Fortier, A., Sousa, S. G., Sulis, S., Van Grootel, V., Garai, Z., Boldog, A., Kriskovics, L., Szabó, M. Gy., Gandolfi, D., Alibert, Y., Alonso, R., Bárczy, T., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Beck, M., Beck, T., Benz, W., Billot, N., Borsato, L., Broeg, C., Cameron, A. Collier, Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Deline, A., Delrez, L., Demangeon, O. D. S., Demory, B. -O., Ehrenreich, D., Erikson, A., Farinato, J., Fossati, L., Fridlund, M., Gillon, M., Güdel, M., Günther, M. N., Heitzmann, A., Helling, Ch., Hoyer, S., Isaak, K. G., Kiss, L., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Lendl, M., Magrin, D., Mordasini, C., Nascimbeni, V., Ottensamer, R., Pallé, E., Peter, G., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H., Ribas, I., Santos, N. C., Sarajlic, M., Ségransan, D., Simon, A. E., Singh, V., Smith, A. M. S., Stalport, M., Thomas, N., Udry, S., Ulmer, B., Venturini, J., Villaver, E., Walton, N. A., Wilson, T. G.

Context. White-light stellar flares are proxies for some of the most energetic types of flares, but their triggering mechanism is still poorly understood. As they are associated with strong X and UV emission, their study is particularly relevant to e

Externí odkaz: http://arxiv.org/abs/2403.17065

Mass supply from Io to Jupiter's magnetosphere

Autor: Roth, L., Blöcker, A., de Kleer, K., Goldstein, D., Lellouch, E., Saur, J., Schmidt, C., Strobel, D. F., Tao, C., Tsuchiya, F., Dols, V., Huybrighs, H., Mura, A., Szalay, J. R., Badman, S. V., de Pater, I., Dott, A. -C., Kagitani, M., Klaiber, L., Koga, R., McEwen, A., Milby, Z., Retherford, K. D., Schlegel, S., Thomas, N., Tseng, W. L., Vorburger, A.

Since the Voyager mission flybys in 1979, we have known the moon Io to be extremely volcanically active as well as to be the main source of plasma in the vast magnetosphere of Jupiter. Material lost from Io forms neutral clouds, the Io plasma torus a

Externí odkaz: http://arxiv.org/abs/2403.13970

X-ray polarization measurement of the gold standard of radio-quiet active galactic nuclei : NGC 1068

Autor: Marin, F., Marinucci, A., Laurenti, M., Kim, D. E., Barnouin, T., Di Marco, A., Ursini, F., Bianchi, S., Ravi, S., Marshall, H. L., Matt, G., Chen, C. -T., Gianolli, V. E., Ingram, A., Maksym, W. P., Panagiotou, C., Podgorny, J., Puccetti, S., Ratheesh, A., Tombesi, F., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W., Bellazzini, R., Bongiorno, S., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Madejski, G., Maldera, S., Manfreda, A., Marscher, A., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, S., O'Dell, S., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Poutanen, J., Ramsey, B., Rankin, J., Roberts, O., Romani, R., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A., Thomas, N., Trois, A., Tsygankov, S., Turolla, R., Vink, J., Weisskopf, M., Wu, K., Xie, F., Zane, S.

Publikováno v: A&A 689, A238 (2024)

We used the Imaging X-ray Polarimetry Explorer (IXPE) satellite to measure, for the first time, the 2-8 keV polarization of NGC 1068. We pointed IXPE for a net exposure time of 1.15 Ms on the target, in addition to two ~ 10 ks each Chandra snapshots

Externí odkaz: http://arxiv.org/abs/2403.02061

Attosecond X-ray Chronoscopy of Core-level Photoemission

Autor: Ji, Jia-Bao, Guo, Zhaoheng, Driver, Taran, Trevisan, Cynthia S., Cesar, David, Cheng, Xinxin, Duris, Joseph, Franz, Paris L., Glownia, James, Gong, Xiaochun, Hammerland, Daniel, Han, Meng, Heck, Saijoscha, Hoffmann, Matthias, Kamalov, Andrei, Larsen, Kirk A., Li, Xiang, Lin, Ming-Fu, Liu, Yuchen, McCurdy, C. William, Obaid, Razib, ONeal, Jordan T., Rescigno, Thomas N., Robles, River R., Sudar, Nicholas, Walter, Peter, Wang, Anna L., Wang, Jun, Wolf, Thomas J. A., Zhang, Zhen, Ueda, Kiyoshi, Lucchese, Robert R., Marinelli, Agostino, Cryan, James P., Wörner, Hans Jakob

Attosecond photoemission or photoionization delays are a unique probe of the structure and the electronic dynamics of matter. However, spectral congestion and spatial delocalization of valence electron wave functions set fundamental limits to the com

Externí odkaz: http://arxiv.org/abs/2402.17685