DSpace Angular :: Browsing by Author "Puccetti, S."

Browsing by Author "Puccetti, S."

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Determining the covering factor of compton-thick active galactic nuclei with NuSTAR
(2015) Brightman, M.; Balokovic, M.; Stern, D.; Arevalo, P.; Ballantyne, D. R.; Bauer, Franz Erik; Bogg, S. E.; Craig, W. W.; Christensen, F. E.; Comastri, A.; Gandhi, P.; Hailey, C. J.; Harrison, F. A.; Hickox, R. C.; Koss, M.; Lamassa, S.; Fuerst, F.; Puccetti, S.; Rivers, E.; Vasudevan, R.; Walton, D. J.; Zhang, W. W.
Hard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR
(2016) Puccetti, S.; Comastri, A.; Bauer, Franz Erik; Brandt, W.; Fiore, E.; Harrison, F.; Luo, B.; Stern, D.; Urry, C.; Alexander, D.; Annuar, A.; Arevalo, P.; Balokovic, M.; Boggs, S.; Brightman, M.; Craig, W.; Ricci, Claudio
NuSTAR catches the unveiling nucleus of NGC 1068
(2016) Bauer, Franz Erik; Ricci, Claudio; Marinucci, A.; Bianchi, S.; Matt, G.; Alexander, D.; Balokovic, M.; Brandt, W.; Gandhi, P.; Guainazzi, M.; Harrison, F.; Iwasawa, K.; Koss, M.; Madsen, K.; Nicastro, F.; Puccetti, S.; Stern, D.; Walton, D.
NuSTAR observations of water megamaser AGN
(2016) Masini, A.; Comastri, A.; Baloković, M.; Zaw, I.; Puccetti, S.; Ballantyne, D. R.; Bauer, Franz Erik; Boggs, S. E.; Brandt, W. N.; Brightman, M.; Christensen, F. E.; Craig, W. W.; Gandhi, P.; Hailey, C. J.; Harrison, F. A.; Koss, M. J.; Madejski, G.; Ricci, Claudio; Rivers, E.; Stern, D.
NuStar spectroscopy of multiI-component X-Ray reflection from NGC 1068
(2015) Bauer, Franz Erik; Arévalo, P.; Walton, D.; Koss, M.; Puccetti, S.; Gandhi, P.; Stern, D.; Alexander, D.; Balokovic, M.; Boggs, S.; Brandt, W.; Brightman, M.; Christensen, F.; Comastri, A.; Craig, W.; Del Moro, A.
Probing the circumnuclear absorbing medium of the buried AGN in NGC 1068 through NuSTAR observations
(OUP, 2019) Zaino, A.; Bianchi, S.; Marinucci, A.; Matt, G.; Bauer, Franz Erik; Brandt, W. N.; Gandhi, P.; Guainazzi, M.; Iwasawa, K.; Puccetti, S.; Ricci, Claudio; Walton, D. J.
We present the results of the latest NuSTAR monitoring campaign of the Compton-thick Seyfert 2 galaxy NGC 1068, composed of four ∼50 ks observations performed between 2017 July and 2018 February to search for flux and spectral variability on time-scales from 1 to 6 months. We detect one unveiling and one eclipsing event with time-scales less than 27 and 91 d, respectively, ascribed to Compton-thick material with N H = (1.8 ± 0.8) × 10 24 and ≥ (2.4 ± 0.5) × 10 24 cm −2 moving across our line of sight. This gas is likely located in the innermost part of the torus or even further inward, thus providing further evidence of the clumpy structure of the circumnuclear matter in this source. Taking advantage of simultaneous Swift–XRT observations, we also detected a new flaring ULX, at a distance d ∼ 30 arcsec (i.e. ∼2 kpc) from the nuclear region of NGC 1068, with a peak X-ray intrinsic luminosity of (3.0 ± 0.4) × 10 40 erg s −1 in the 2–10 keV band.
The 2-79 keV X-Ray Spectrum of the Circinus Galaxy with NuSTAR, XMM-Newton, and Chandra: A Fully Compton-thick Active Galactic Nucleus
(2014) Arévalo, Patricia.; Treister, Ezequiel; Bauer, Franz Erik; Puccetti, S.; Walton, D. J.; Koss, M.; Boggs, Steve E.; Brandt, W N.; Brightman, M.; Christensen, F. E.; Comastri, A.; Craig, W. W.
THE NuSTAR EXTRAGALACTIC SURVEY: A FIRST SENSITIVE LOOK AT THE HIGH-ENERGY COSMIC X-RAY BACKGROUND POPULATION
(2013) Alexander, D. M.; Stern, D.; Del Moro, A.; Lansbury, G. B.; Assef, R. J.; Aird, J.; Ajello, M.; Ballantyne, D. R.; Bauer, F. E.; Boggs, S. E.; Brandt, W. N.; Christensen, F. E.; Civano, F.; Comastri, A.; Craig, W. W.; Elvis, M.; Grefenstette, B. W.; Hailey, C. J.; Harrison, F. A.; Hickox, R. C.; Luo, B.; Madsen, K. K.; Mullaney, J. R.; Perri, M.; Puccetti, S.; Saez, C.; Treister, E.; Urry, C. M.; Zhang, W. W.; Bridge, C. R.; Eisenhardt, P. R. M.; Gonzalez, A. H.; Miller, S. H.; Tsai, C. W.
We report on the first 10 identifications of sources serendipitously detected by the Nuclear Spectroscopic Telescope Array (NuSTAR) to provide the first sensitive census of the cosmic X-ray background source population at greater than or similar to 10 keV. We find that these NuSTAR-detected sources are approximate to 100 times fainter than those previously detected at greater than or similar to 10 keV and have a broad range in redshift and luminosity (z = 0.020-2.923 and L10-40 keV approximate to 4 x 10(41)-5 x 10(45) erg s(-1)); the median redshift and luminosity are z approximate to 0.7 and L10-40 keV approximate to 3 x 10(44) erg s(-1), respectively. We characterize these sources on the basis of broad-band approximate to 0.5-32 keV spectroscopy, optical spectroscopy, and broad-band ultraviolet-to-mid-infrared spectral energy distribution analyses. We find that the dominant source population is quasars with L10-40 keV > 10(44) erg s(-1), of which approximate to 50% are obscured with N-H greater than or similar to 10(22) cm(-2). However, none of the 10 NuSTAR sources are Compton thick (N-H greater than or similar to 10(24) cm(-2)) and we place a 90% confidence upper limit on the fraction of Compton-thick quasars (L10-40 keV > 10(44) erg s(-1)) selected at greater than or similar to 10 keV of less than or similar to 33% over the redshift range z = 0.5-1.1. We jointly fitted the rest-frame approximate to 10-40 keV data for all of the non-beamed sources with L10-40 keV > 10(43) erg s(-1) to constrain the average strength of reflection; we find R < 1.4 for Gamma = 1.8, broadly consistent with that found for local active galactic nuclei (AGNs) observed at greater than or similar to 10 keV. We also constrain the host-galaxy masses and find a median stellar mass of approximate to 10(11) M-circle dot, a factor approximate to 5 times higher than the median stellar mass of nearby high-energy selected AGNs, which may be at least partially driven by the order of magnitude higher X-ray luminosities of the NuSTAR sources. Within the low source-statistic limitations of our study, our results suggest that the overall properties of the NuSTAR sources are broadly similar to those of nearby high-energy selected AGNs but scaled up in luminosity and mass.
The Chandra Cosmos Legacy Survey: Overview and Point Source Catalog
(2016) Civano, Francesca; Treister, Ezequiel; Marchesi, Stefano; Comastri, A.; Urry, C. Megan; Elvis, Martin; Cappelluti N; Puccetti, S.; Brusa, Marcella; Zamorani, G.; Hasinger, G.
The Nustar Extragalactic Surveys: Overview and Catalog from the COSMOS Field
(2015) Civano, Francesca; Bauer, Franz Erik; Luo, B.; Saez, C.; Treister, Ezequiel; Hickox, R. C.; Puccetti, S.; Comastri, A.; Mullaney, J.; Zappacosta, L.; LaMassa, Stephanie M.
The NuSTAR Extragalactic Surveys: X-Ray Spectroscopic Analysis of the Bright Hard-band Selected Sample
(2018) Zappacosta, L.; Ricci, Claudio; Treister, Ezequiel; Comastri, A.; Civano, Francesca; Puccetti, S.; Fiore, F.; Aird, J. A.; Del Moro, A.; Lansbury, George B.; Lanzuisi, G.
The Phoenix galaxy as seen by NuSTAR
(2017) Masini, A.; Comastri, A.; Puccetti, S.; Balokovic, M.; Gandhi, P.; Guainazzi, M.; Boggs, S.; Ricci, Claudio; Bauer, Franz Erik; Boorman, P.; Brightman, M.; Christensen, F.; Craig, W.; Farrah, D.; Hailey, C.; Harrison, F.; Koss, M.
The Seyfert 2 galaxy NGC 2110 : hard X-ray emission observed by NuSTAR and variability of the iron Kα line
(2015) Marinucci, A.; Matt, G.; Bianchi, S.; Lu, T. N.; Arévalo, P.; Balokovic, M.; Ballantyne, D.; Bauer, Franz Erik; Boggs, S. E.; Christensen, F. E.; Craig, W. W.; Gandhi, P.; Hailey, C. J.; Harrison, F.; Puccetti, S.; Rivers, E.; Walton, D. J.; Stern, D.; Zhang, W.
THE VARIABLE HARD X-RAY EMISSION OF NGC 4945 AS OBSERVED BY NUSTAR
(2014) Arévalo, P.; Puccetti, S.; Comastri. A.; Fiore, F.; Risaliti, G.; Bauer, Franz Erik; Brandt, W.; Stern, D.

Browsing by Author "Puccetti, S."

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