Zobrazeno 1 - 10
of 805
pro vyhledávání: '"Done C"'
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.
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:
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:
Zappacosta, L., Piconcelli, E., Fiore, F., Saccheo, I., Valiante, R., Vignali, C., Vito, F., Volonteri, M., Bischetti, M., Comastri, A., Done, C., Elvis, M., Giallongo, E., La Franca, F., Lanzuisi, G., Laurenti, M., Miniutti, G., Bongiorno, A., Brusa, M., Civano, F., Carniani, S., D'Odorico, V., Feruglio, C., Gallerani, S., Gilli, R., Grazian, A., Guainazzi, M., Marinucci, A., Menci, N., Middei, R., Nicastro, F., Puccetti, S., Tombesi, F., Tortosa, A., Testa, V., Vietri, G., Cristiani, S., Haardt, F., Maiolino, R., Schneider, R., Tripodi, R., Vallini, L., Vanzella, E.
Publikováno v:
A&A 678, A201 (2023)
The existence of luminous quasars (QSO) at the Epoch of Reionization (EoR; i.e. z>6) powered by supermassive black holes (SMBH) with masses $\gtrsim10^9~M_\odot$ challenges models of early SMBH formation. To shed light on the nature of these sources
Externí odkaz:
http://arxiv.org/abs/2305.02347
Autor:
Middei, R., Petrucci, P. -O., Bianchi, S., Ursini, F., Matzeu, G. A., Vagnetti, F., Tortosa, A., Marinucci, A., Matt, G., Piconcelli, E., De Rosa, A., De Marco, B., Reeves, J., Perri, M., Guainazzi, M., Cappi, M., Done, C.
The Type I active galactic nucleus (AGN) ESO 511-G030, a formerly bright and soft-excess dominated source, has been observed in 2019 in the context of a multi-wavelength monitoring campaign. However, in these novel exposures, the source was found in
Externí odkaz:
http://arxiv.org/abs/2302.03705
Autor:
Gandhi, P., Kawamuro, T., Trigo, M. Díaz, Paice, J. A., Boorman, P. G., Cappi, M., Done, C., Fabian, A. C., Fukumura, K., Garcia, J. A., Greenwell, C. L., Guainazzi, M., Makishima, K., Tashiro, M. S., Tomaru, R., Tombesi, F., Ueda, Y.
Microcalorimeters have demonstrated success in delivering high spectral resolution, and have paved the path to revolutionary new science possibilities in the coming decade of X-ray astronomy. There are several research areas in compact object science
Externí odkaz:
http://arxiv.org/abs/2209.10576
Autor:
Scaringi, S., Groot, P. J., Knigge, C., Bird, A. J., Breedt, E., Buckley, D. A. H., Cavecchi, Y., Degenaar, N. D., de Martino, D., Done, C., Fratta, M., Ilkiewicz, K., Koerding, E., Lasota, J. -P., Littlefield, C., Manara, C. F., O'Brien, M., Szkody, P., Timmes, F. X.
Nova explosions are caused by global thermonuclear runaways triggered in the surface layers of accreting white dwarfs. It has been predicted that localised thermonuclear bursts on white dwarfs can also take place, similar to Type I X-ray bursts obser
Externí odkaz:
http://arxiv.org/abs/2204.09070
BH HMXB systems are likely the progenitors of the BH-BH mergers detected in gravitational waves by LIGO/Virgo/KAGRA (LVK). Yet merging BHs reach higher masses (~ $100 M_{\odot}$) than BHs in HMXBs ($\sim 20M_{\odot}$) and have typically lower spins (
Externí odkaz:
http://arxiv.org/abs/2111.09401
Publikováno v:
A&A 644, A132 (2020)
We report estimates of the X-ray coronal size of active galactic nuclei in the lamppost geometry. In this commonly adopted scenario, the corona is assumed for simplicity to be a point-like X-ray source located on the axis of the accretion disc. Howev
Externí odkaz:
http://arxiv.org/abs/2010.07166
Autor:
Williams, P. R., Pancoast, A., Treu, T., Brewer, B. J., Peterson, B. M., Barth, A. J., Malkan, M. A., De Rosa, G., Horne, Keith, Kriss, G. A., Arav, N., Bentz, M. C., Cackett, E. M., Bontà, E. Dalla, Dehghanian, M., Done, C., Ferland, G. J., Grier, C. J., Kaastra, J., Kara, E., Kochanek, C. S., Mathur, S., Mehdipour, M., Pogge, R. W., Proga, D., Vestergaard, M., Waters, T., Adams, S. M., Anderson, M. D., Arévalo, P., Beatty, T. G., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Deason, A. J., De Lorenzo-Cáceres, A., Denney, K. D., Dietrich, M., Edelson, R., Efimova, N. V., Ely, J., Evans, P. A., Fausnaugh, M. M., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Greene, J. E., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Knigge, C., Krongold, Y., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, Manne-Nicholas, E. R., MacInnis, F., Mauerhan, J. C., McGurk, R., Hardy, I. M. Mc, Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Müller-Sánchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Papadakis, I., Parks, J. R., Pei, L., Penny, M. T., Pizzella, A., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Tejos, N., Turner, C. S., Uttley, P., Van Saders, J., Vaughan, S. A., Vican, L., Villanueva Jr., S., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W., Zu, Y.
We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photometric and spectroscopic monitoring in the optical and ultraviolet, co
Externí odkaz:
http://arxiv.org/abs/2010.00594
Autor:
Bollimpalli, D. A., Mahmoud, R., Done, C., Fragile, P. C., Kluźniak, W., Narayan, R., White, C. J.
Publikováno v:
MNRAS 496 (2020), 3808-3828
Long-term observations have shown that black hole X-ray binaries exhibit strong, aperiodic variability on time-scales of a few milliseconds to seconds. The observed light curves display various characteristic features like a log-normal distribution o
Externí odkaz:
http://arxiv.org/abs/2006.00755