Zobrazeno 1 - 10
of 1 690
pro vyhledávání: '"GIUSTINI M."'
Autor:
Kosec, P., Kara, E., Brenneman, L., Chakraborty, J., Giustini, M., Miniutti, G., Pinto, C., Rogantini, D., Arcodia, R., Middleton, M., Sacchi, A.
Quasi-periodic eruptions (QPEs) are high-amplitude, soft X-ray bursts recurring every few hours, associated with supermassive black holes. Many interpretations for QPEs were proposed since their recent discovery in 2019, including extreme mass ratio
Externí odkaz:
http://arxiv.org/abs/2406.17105
Autor:
Arcodia, R., Linial, I., Miniutti, G., Franchini, A., Giustini, M., Bonetti, M., Sesana, A., Soria, R., Chakraborty, J., Dotti, M., Kara, E., Merloni, A., Ponti, G., Vincentelli, F.
Publikováno v:
A&A 690, A80 (2024)
Quasi-periodic eruptions (QPEs) are repeated X-ray flares from galactic nuclei. Despite some diversity in the recurrence and amplitude of eruptions, their striking regularity has motivated theorists to associate QPEs with orbital systems. Among the k
Externí odkaz:
http://arxiv.org/abs/2406.17020
Autor:
Juráňová, A., Costantini, E., Kriss, G. A., Mehdipour, M., Brandt, W. N., Di Gesu, L., Fabian, A. C., Gallo, L., Giustini, M., Rogantini, D., Wilkins, D. R.
We present an analysis of the HST COS spectrum of IZw1 aiming to probe the absorbing medium associated with the active galactic nucleus (AGN). We fitted the emission spectrum and performed spectral analysis of the identified absorption features to de
Externí odkaz:
http://arxiv.org/abs/2404.10060
Autor:
Gianolli, V. E., Bianchi, S., Petrucci, P-O, Brusa, M., Chartas, G., Lanzuisi, G., Matzeu, G. A., Parra, M., Ursini, F., Behar, E., Bischetti, M., Comastri, A., Costantini, E., Cresci, G., Dadina, M., De Marco, B., De Rosa, A., Fiore, F., Gaspari, M., Gilli, R., Giustini, M., Guainazzi, M., King, A. R., Kraemer, S., Kriss, G., Krongold, Y., La Franca, F., Longinotti, A. L., Luminari, A., Maiolino, R., Marconi, A., Mathur, S., Matt, G., Mehdipour, M., Merloni, A., Middei, R., Miniutti, G., Nardini, E., Panessa, F., Perna, M., Piconcelli, E., Ponti, G., Ricci, F., Serafinelli, R., Tombesi, F., Vignali, C., Zappacosta, L.
Publikováno v:
A&A 687, A235 (2024)
The detection of blue-shifted absorption lines likely associated with ionized Iron K-shell transitions in the X-ray spectra of many Active Galactic Nuclei (AGN) suggests the presence of a highly ionized gas outflowing with mildly relativistic velocit
Externí odkaz:
http://arxiv.org/abs/2403.09538
Autor:
Giustini, M., Hidalgo, P. Rodríguez, Reeves, J. N., Matzeu, G., Braito, V., Eracleous, M., Chartas, G., Schartel, N., Vignali, C., Hall, P. B., Waters, T., Ponti, G., Proga, D., Dadina, M., Cappi, M., Miniutti, G., de Vries, L.
Publikováno v:
A&A 679, A73 (2023)
Accretion disk winds launched close to supermassive black holes (SMBHs) are a viable mechanism to provide feedback between the SMBH and the host galaxy. We aim to characterize the X-ray properties of the inner accretion disk wind of the nearby active
Externí odkaz:
http://arxiv.org/abs/2306.05469
Autor:
Quintin, E., Webb, N. A., Guillot, S., Miniutti, G., Kammoun, E. S., Giustini, M., Arcodia, R., Soucail, G., Clerc, N., Amato, R., Markwardt, C. B.
Publikováno v:
A&A 675, A152 (2023)
Quasi-periodic eruptions (QPEs) are repeating thermal X-ray bursts associated with accreting massive black holes, the precise underlying physical mechanisms of which are still unclear. We present a new candidate QPE source, AT 2019vcb (nicknamed Torm
Externí odkaz:
http://arxiv.org/abs/2306.00438
Autor:
Miniutti, G., Giustini, M., Arcodia, R., Saxton, R. D., Chakraborty, J., Read, A. M., Kara, E.
Publikováno v:
A&A 674, L1 (2023)
X-ray quasi-periodic eruptions (QPEs) are intense repeating soft X-ray bursts from the nuclei of nearby galaxies. Their physical origin is still largely unconstrained, and several theoretical models have been proposed to date. We present here results
Externí odkaz:
http://arxiv.org/abs/2305.09717
Autor:
Matzeu, G. A., Brusa, M., Lanzuisi, G., Dadina, M., Bianchi, S., Kriss, G., Mehdipour, M., Nardini, E., Chartas, G., Middei, R., Piconcelli, E., Gianolli, V., Comastri, A., Longinotti, A. L., Krongold, Y., Ricci, F., Petrucci, P. O., Tombesi, F., Luminari, A., Zappacosta, L., Miniutti, G., Gaspari, M., Behar, E., Bischetti, M., Mathur, S., Perna, M., Giustini, M., Grandi, P., Torresi, E., Vignali, C., Bruni, G., Cappi, M., Costantini, E., Cresci, G., De Marco, B., De Rosa, A., Gilli, R., Guainazzi, M., Kaastra, J., Kraemer, S., La Franca, F., Marconi, A., Panessa, F., Ponti, G., Proga, D., Ursini, F., Fiore, F., King, A. R., Maiolino, R., Matt, G., Merloni, A.
We present a new X-ray spectroscopic study of $22$ luminous ($2\times10^{45}\lesssim L_{\rm bol}\rm /erg\,s^{-1} \lesssim 2\times10^{46}$) active galactic nuclei (AGNs) at intermediate-redshift ($0.1 \lesssim z \lesssim 0.4$), as part of the SUpermas
Externí odkaz:
http://arxiv.org/abs/2212.02960
Autor:
Mehdipour, M., Kriss, G. A., Brusa, M., Matzeu, G. A., Gaspari, M., Kraemer, S. B., Mathur, S., Behar, E., Bianchi, S., Cappi, M., Chartas, G., Costantini, E., Cresci, G., Dadina, M., De Marco, B., De Rosa, A., Dunn, J. P., Gianolli, V. E., Giustini, M., Kaastra, J. S., King, A. R., Krongold, Y., La Franca, F., Lanzuisi, G., Longinotti, A. L., Luminari, A., Middei, R., Miniutti, G., Nardini, E., Perna, M., Petrucci, P. -O., Piconcelli, E., Ponti, G., Ricci, F., Tombesi, F., Ursini, F., Vignali, C., Zappacosta, L.
We present a UV spectroscopic study of ionized outflows in 21 active galactic nuclei (AGN), observed with the HST. The targets of the SUBWAYS sample were selected with the aim to probe the parameter space of the underexplored AGN between the local Se
Externí odkaz:
http://arxiv.org/abs/2212.02961
Autor:
Matzeu, G. A., Lieu, M., Costa, M. T., Reeves, J. N., Braito, V., Dadina, M., Nardini, E., Boorman, P. G., Parker, M. L., Sim, S. A., Barret, D., Kammoun, E., Middei, R., Giustini, M., Brusa, M., Cabrera, J. Pérez, Marchesi, S.
We present a new X-Ray Accretion Disk-wind Emulator (\textsc{xrade}) based on the 2.5D Monte Carlo radiative transfer code which provides a physically-motivated, self-consistent treatment of both absorption and emission from a disk-wind by computing
Externí odkaz:
http://arxiv.org/abs/2207.13731