Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Gerard A. Kriss"'
Autor:
S. Valenti, A. A. Breeveld, W. N. Brandt, J. M. Gelbord, D. A. Starkey, M. H. Siegel, Marianne Vestergaard, K. L. Page, Bradley M. Peterson, Dirk Grupe, Christopher A. Onken, Kirk T. Korista, S. J. Laporte, E. Dalla Bontà, D. Mudd, Smita Mathur, Phil Uttley, Aaron J. Barth, Michael D. Joner, P. A. Evans, Gerard A. Kriss, Hagai Netzer, D. Gonzalez-Buitrago, J. V. Hernández Santisteban, M. R. Goad, Gary J. Ferland, T. Schmidt, Susanna Bisogni, Anne M. Lohfink, Keith Horne, Rick Edelson, Edward M. Cackett, S. B. Cenko, Simon Vaughan, Missagh Mehdipour, F. E. Marshall
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 498(4), 5399-5416. Oxford University Press
Santisteban, J V H, Edelson, R, Horne, K, Gelbord, J M, Barth, A J, Cackett, E M, Goad, M R, Netzer, H, Starkey, D, Uttley, P, Brandt, W N, Korista, K, Lohfink, A M, Onken, C A, Page, K L, Siegel, M, Vestergaard, M, Bisogni, S, Breeveld, A A, Cenko, S B, Dalla Bonta, E, Evans, P A, Ferland, G, Gonzalez-Buitrago, D H, Grupe, D, Joner, M D, Kriss, G, LaPorte, S J, Mathur, S, Marshall, F, Mehdipour, M, Mudd, D, Peterson, B M, Schmidt, T, Vaughan, S & Valenti, S 2020, ' Intensive disc-reverberation mapping of Fairall 9 : first year of Swift and LCO monitoring ', Monthly Notices of the Royal Astronomical Society, vol. 498, no. 4, pp. 5399-5416 . https://doi.org/10.1093/mnras/staa2365
Santisteban, J V H, Edelson, R, Horne, K, Gelbord, J M, Barth, A J, Cackett, E M, Goad, M R, Netzer, H, Starkey, D, Uttley, P, Brandt, W N, Korista, K, Lohfink, A M, Onken, C A, Page, K L, Siegel, M, Vestergaard, M, Bisogni, S, Breeveld, A A, Cenko, S B, Dalla Bonta, E, Evans, P A, Ferland, G, Gonzalez-Buitrago, D H, Grupe, D, Joner, M D, Kriss, G, LaPorte, S J, Mathur, S, Marshall, F, Mehdipour, M, Mudd, D, Peterson, B M, Schmidt, T, Vaughan, S & Valenti, S 2020, ' Intensive disc-reverberation mapping of Fairall 9 : first year of Swift and LCO monitoring ', Monthly Notices of the Royal Astronomical Society, vol. 498, no. 4, pp. 5399-5416 . https://doi.org/10.1093/mnras/staa2365
We present results of time-series analysis of the first year of the Fairall 9 intensive disc-reverberation campaign. We used Swift and the Las Cumbres Observatory global telescope network to continuously monitor Fairall 9 from X-rays to near-infrared
Autor:
Yijun Wang, Jelle Kaastra, Missagh Mehdipour, Junjie Mao, Elisa Costantini, Gerard A. Kriss, Ciro Pinto, Gabriele Ponti, Ehud Behar, Stefano Bianchi, Graziella Branduardi-Raymont, Barbara De Marco, Sam Grafton-Waters, Pierre-Olivier Petrucci, Jacobo Ebrero, Dominic James Walton, Shai Kaspi, Yongquan Xue, Stéphane Paltani, Laura di Gesu, Zhicheng He
Publikováno v:
Astronomy & Astrophysics, 657:A77
A&A
A&A
The relation between warm absorber (WA) outflows of AGN and nuclear obscuration activities caused by optically-thick clouds (obscurers) crossing the line of sight is unclear. NGC 3227 is a suitable target to study the properties of both WAs and obscu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a021a202de7277c4e08a9e83c8f9ce91
https://doi.org/10.1051/0004-6361/202141599
https://doi.org/10.1051/0004-6361/202141599
Autor:
B. De Marco, Shai Kaspi, Y. Wang, Gabriele Ponti, P.-O. Petrucci, Dominic J. Walton, Gerard A. Kriss, Nahum Arav, Ciro Pinto, Junjie Mao, Francesco Ursini, S. Grafton-Waters, Elisa Costantini, Graziella Branduardi-Raymont, Jelle Kaastra, Jacobo Ebrero, Stéphane Paltani, Giorgio Matt, Simone Bianchi, M. Mehdipour, Ehud Behar, L. Di Gesu, Michael S. Brotherton, Massimo Cappi
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Astronomy and Astrophysics, 652
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 652, pp.A150. ⟨10.1051/0004-6361/202141324⟩
Universitat Politècnica de Catalunya (UPC)
Astronomy and Astrophysics, 652
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 652, pp.A150. ⟨10.1051/0004-6361/202141324⟩
From Swift monitoring of a sample of active galactic nuclei (AGN) we found a transient X-ray obscuration event in Seyfert-1 galaxy NGC 3227, and thus triggered our joint XMM-Newton, NuSTAR, and Hubble Space Telescope (HST) observations to study this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce35e26f4d1b60fc0e78a4ef6d92efb0
Autor:
Jin-Ming Bai, Luka Č. Popović, Ian M. M. cHardy, Doyee Byun, Z. G. Yao, Kirk T. Korista, Aaron J. Barth, M. Mehdipour, Michael D. Joner, Encarni Romero Colmenero, Daniel Kynoch, Ying Zu, Laura Ferrarese, Catherine J. Grier, Juan V. Hernandez Santisteban, J. N. McLane, Erika Strasburger, Wei-Jian Guo, D. Chelouche, Travis Fischer, Michael S. Brotherton, Shai Kaspi, Yan-Rong Li, Tim Waters, D. Ilic, Theodora E. Zastrocky, Richard W. Pogge, Diego H. Gonzalez Buitrago, John Montano, Gerard A. Kriss, T. G. Brink, Jun-Rong Liu, Elena Dalla Bontà, Alexei V. Filippenko, Jake Miller, Erin Kara, Hagai Netzer, Sha-Sha Li, Chen Hu, Dong-Wei Bao, J. M. Gelbord, Jian-Min Wang, M. Dehghanian, Shuo Zhai, Marianne Vestergaard, Patrick B. Hall, Tommaso Treu, Michael R. Goad, Jelle Kaastra, Misty C. Bentz, Daniel Proga, Thaisa Storchi-Bergmann, Hermine Landt, Gary J. Ferland, Ethan Partington, Luis C. Ho, Gisella De Rosa, Yi Chen, Peter R. Williams, Rick Edelson, Pu Du, Jake A. J. Mitchell, Jesús Aceituno, Y. Homayouni, Keith Horne, Varoujan Gorjian, Sen Yang, Edward M. Cackett, Nahum Arav, Bo-Wei Jiang, K. A. Olson, Carina Fian, Martin Ward, Christopher S. Kochanek
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
The Astrophysical Journal, 2021, Vol.922(2), pp.151 [Peer Reviewed Journal]
The Astrophysical Journal, 922(2)
instname
The Astrophysical Journal, 2021, Vol.922(2), pp.151 [Peer Reviewed Journal]
The Astrophysical Journal, 922(2)
Full list of authors: Kara, Erin; Mehdipour, Missagh; Kriss, Gerard A.; Cackett, Edward M.; Arav, Nahum; Barth, Aaron J.; Byun, Doyee; Brotherton, Michael S.; De Rosa, Gisella; Gelbord, Jonathan; Hernández Santisteban, Juan V.; Hu, Chen; Kaastra, Je
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2611033a10f52dbaeba5932d991f84f8
https://hdl.handle.net/1887/3250965
https://hdl.handle.net/1887/3250965
Autor:
Erin Kara, Michael Parker, Luigi C. Gallo, Stefanie Komossa, A. L. Longinotti, D. Blue, Dan R. Wilkins, Dirk Grupe, P. Poulos, Gerard A. Kriss
The narrow-line Seyfert 1 galaxy Mrk 335 was one of the X-ray brightest AGN, but it has systematically faded since 2007. Here, we report the discovery with Swift of a sequence of bright and rapid X-ray flare events that reveal the emergence of Mrk 33
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afe8d1d1a327f8c6ca28519df4b7ae30
http://arxiv.org/abs/2011.04996
http://arxiv.org/abs/2011.04996
Autor:
S. Komossa, Luigi C. Gallo, K.M. McGrath, Shruti Tripathi, Dirk Grupe, Anna Lia Longinotti, Marco Berton, Gerard A. Kriss
Multi-wavelength monitoring of Mrk 335 with Swift between 2007-2019 are used to construct annual spectral energy distributions and track year-to-year changes. Non-contemporaneous archival data prior to 2007 are used to build a bright state SED. In th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e02b69f44965aa3225737c90922213e0
https://aaltodoc.aalto.fi/handle/123456789/102074
https://aaltodoc.aalto.fi/handle/123456789/102074
Determining the distance of quasar absorption outflows from the central source (R) and their kinetic luminosity are crucial for understanding their contribution to active galactic nucleus (AGN) feedback. Here we summarize the results for a sample of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::018d43de56ca54bcd547a81bd8d1b4f6
http://arxiv.org/abs/2009.11851
http://arxiv.org/abs/2009.11851
We present an analysis of the broad absorption line (BAL) velocity shift that appeared in one of the outflow systems in quasar SDSS J1042+1646. Observations were taken by the Hubble Space Telescope/Cosmic Origin Spectrograph in 2011 and 2017 in the 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b0f8fdca62969326d62a16e51bf711c
http://arxiv.org/abs/2003.08691
http://arxiv.org/abs/2003.08691
Autor:
Elisa Costantini, Graziella Branduardi-Raymont, L. Di Gesu, U. Peretz, Gerard A. Kriss, Gabriele Ponti, Jacobo Ebrero, B. De Marco, S. Grafton-Waters, Shai Kaspi, Ehud Behar, M. J. Page, Nahum Arav, R. Middei, Jelle Kaastra, Simone Bianchi, Missagh Mehdipour, P.-O. Petrucci, Junjie Mao
Publikováno v:
Astron.Astrophys.
Astron.Astrophys., 2019, 633, ⟨10.1051/0004-6361/201935815⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 633, pp.A62. ⟨10.1051/0004-6361/201935815⟩
Astronomy & Astrophysics, 633, A62
Astron.Astrophys., 2019, 633, ⟨10.1051/0004-6361/201935815⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 633, pp.A62. ⟨10.1051/0004-6361/201935815⟩
Astronomy & Astrophysics, 633, A62
Aims. We aim to investigate and characterise the photoionised X-ray emission line regions within NGC 7469. Methods. We apply the photoionisation model, PION, within the spectral fitting code SPEX to analyse the 640 ks RGS spectrum of NGC 7469 gathere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b151faf4838cbc26fa41efc8877b155e
https://strathprints.strath.ac.uk/70816/1/Grafton_Waters_etal_AAA_2019_Multi_wavelength_campaign_on_NGC_7469.pdf
https://strathprints.strath.ac.uk/70816/1/Grafton_Waters_etal_AAA_2019_Multi_wavelength_campaign_on_NGC_7469.pdf
Autor:
Nahum Arav, U. Peretz, Xinfeng Xu, Tim B. Miller, Jacobo Ebrero, Massimo Cappi, Gabriele Ponti, Shai Kaspi, Missagh Mehdipour, Gerard A. Kriss, Justin Ely, B. De Marco, Simone Bianchi, Carter Chamberlain, Jelle Kaastra, R. Middei, P.-O. Petrucci, Elisa Costantini, Graziella Branduardi-Raymont, Ehud Behar, L. Di Gesu
Publikováno v:
Astronomy & Astrophysics, 633, A61
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, In press
Astronomy and Astrophysics-A&A, 2020, 633, pp.A61. ⟨10.1051/0004-6361/201935342⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, In press
Astronomy and Astrophysics-A&A, 2020, 633, pp.A61. ⟨10.1051/0004-6361/201935342⟩
Aims. Our aim is to determine the distance of the UV outflow components from the central source, their abundances and total column density, and the mechanism responsible for their observed absorption variability. Methods. We studied the UV spectra ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::196df9e074c33f7ab336c9a98e058d42
http://hdl.handle.net/1887/3134064
http://hdl.handle.net/1887/3134064