Ioannis Georgantopoulos
Ioannis Georgantopoulos
Verified email at noa.gr
Title
Cited by
Cited by
Year
The rosat wide field camera all-sky survey of extreme-ultraviolet sources. i-the bright source catalogue
KA Pounds, DJ Allan, C Barber, MA Barstow, D Bertram, ...
Monthly Notices of the Royal Astronomical Society 260, 77-102, 1993
3811993
The origin of the cosmic X-ray background
T Shanks, I Georgantopoulos, GC Stewart, KA Pounds, BJ Boyle, ...
Nature 353 (6342), 315-320, 1991
2041991
A deep ROSAT survey – I. The QSO X-ray luminosity function
BJ Boyle, RE Griffiths, T Shanks, GC Stewart, I Georgantopoulos
Monthly Notices of the Royal Astronomical Society 260 (1), 49-58, 1993
1991993
The XMM Deep survey in the CDF-S-I. First results on heavily obscured AGN
A Comastri, P Ranalli, K Iwasawa, C Vignali, R Gilli, I Georgantopoulos, ...
Astronomy & Astrophysics 526, L9, 2011
1642011
The Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission
K Nandra, D Barret, X Barcons, A Fabian, JW Herder, L Piro, M Watson, ...
arXiv preprint arXiv:1306.2307, 2013
1542013
A deep ROSAT survey – IV. The evolution of X-ray selected QSOs
BJ Boyle, T Shanks, I Georgantopoulos, GC Stewart, RE Griffiths
Monthly Notices of the Royal Astronomical Society 271 (3), 639-648, 1994
1521994
The XXL Survey-I. Scientific motivations− XMM-Newton observing plan− Follow-up observations and simulation programme
M Pierre, F Pacaud, C Adami, S Alis, B Altieri, N Baran, C Benoist, ...
Astronomy & Astrophysics 592, A1, 2016
1512016
A deep ROSAT survey — V. The extragalactic populations at faint fluxes
I Georgantopoulos, GC Stewart, T Shanks, BJ Boyle, RE Griffiths
Monthly Notices of the Royal Astronomical Society 280 (1), 276-284, 1996
1211996
XMM-Newton and Chandra measurements of the AGN intrinsic absorption: dependence on luminosity and redshift
A Akylas, I Georgantopoulos, A Georgakakis, S Kitsionas, ...
Astronomy & Astrophysics 459 (3), 693-701, 2006
1142006
Constraining the fraction of Compton-thick AGN in the Universe by modelling the diffuse X-ray background spectrum
A Akylas, A Georgakakis, I Georgantopoulos, M Brightman, K Nandra
Astronomy & Astrophysics 546, A98, 2012
1112012
GOODS-Herschel: ultra-deep XMM-Newton observations reveal AGN/star-formation connection
E Rovilos, A Comastri, R Gilli, I Georgantopoulos, P Ranalli, C Vignali, ...
Astronomy & Astrophysics 546, A58, 2012
1092012
ROSAT and ASCA observations of X-ray luminous starburst galaxies: NGC 3310 and 3690
AL Zezas, I Georgantopoulos, MJ Ward
Monthly Notices of the Royal Astronomical Society 301 (4), 915-925, 1998
1071998
The X-ray spectra of optically selected Seyfert 2 galaxies: are there any Seyfert 2 galaxies with no absorption?
A Pappa, I Georgantopoulos, GC Stewart, AL Zezas
Monthly Notices of the Royal Astronomical Society 326 (3), 995-1006, 2001
1022001
XMM-Newton observations of Seyfert galaxies from the Palomar spectroscopic survey: the X-ray absorption distribution
A Akylas, I Georgantopoulos
Astronomy & Astrophysics 500 (3), 999-1012, 2009
902009
Searching for cluster substructure using APM and ROSAT data
V Kolokotronis, S Basilakos, M Plionis, I Georgantopoulos
Monthly Notices of the Royal Astronomical Society 320 (1), 49-60, 2001
902001
X-ray variability in a deep, flux-limited sample of QSOs
O Almaini, A Lawrence, T Shanks, A Edge, BJ Boyle, I Georgantopoulos, ...
Monthly Notices of the Royal Astronomical Society 315 (2), 325-336, 2000
832000
Compton thick AGN in the XMM-COSMOS survey
G Lanzuisi, P Ranalli, I Georgantopoulos, A Georgakakis, I Delvecchio, ...
Astronomy & Astrophysics 573, A137, 2015
802015
Asca observations of deep rosat fields-ii. the 2-10kev agn luminosity function
BJ Boyle, I Georgantopoulos, AJ Blair, GC Stewart, RE Griffiths, T Shanks, ...
arXiv preprint astro-ph/9710002, 1997
751997
The X-ray luminosity function of active galactic nuclei in the redshift interval z=3-5
A Georgakakis, J Aird, J Buchner, M Salvato, ML Menzel, WN Brandt, ...
Monthly Notices of the Royal Astronomical Society 453 (2), 1946-1964, 2015
732015
A deep ROSAT survey–IX. The discovery of a high-redshift type 2 QSO
O Almaini, BJ Boyle, RE Griffiths, T Shanks, GC Stewart, ...
Monthly Notices of the Royal Astronomical Society 277 (1), L31-L34, 1995
711995
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