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19 April 2024
 
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Results 1 to 20 of 138 for query "I.Georgantopoulos". (0.01 sec.)

[    1    2    3    4    5    7    ]   Next
1.
Monitoring RXTE Observations of Markarian 348: the origin of the column density variations
A. Akylas; I. Georgantopoulos; R. G. Griffiths; I. E. Papadakis; A. Mastichiadis; R. S. Warwick; K. Nandra; D.A. Smith;
12 Dec 2001   /  Mon.Not.Roy.Astron.Soc. 332 (2002) L23
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2.
The XMM-Newton/2dF survey VII. Is there any X-ray absorption in optically selected QSOs?
A. Akylas; A. Georgakakis; I. Georgantopoulos;
15 Jun 2004
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3.
On the XMM-Newton spectra of soft X-ray selected QSOs
A. Akylas; I. Georgantopoulos; X. Barcons;
31 May 2002   /  Astron.Astrophys. 403 (2003) 869-876
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4.
The XMM-Newton Needles in the Haystack Survey: the local X-ray luminosity function of 'normal' galaxies
I. Georgantopoulos; A. Georgakakis; E. Koulouridis;
23 Mar 2005   /  Mon.Not.Roy.Astron.Soc. 360 (2005) 782-790
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5.
The XMM-2df Cluster Survey
T. Gaga; M. Plionis; I. Georgantopoulos; A. Georgakakis; S. Basilakos; G. C. Stewart; V. Kolokotronis; A. M. Stobbart;
14 Oct 2003
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6.
X-ray luminous galaxies I. Chandra observations of IRAS00317-2142
I. Georgantopoulos; A. Zezas; M.J. Ward;
17 Oct 2002   /  Astrophys.J. 584 (2003) 129-134
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7.
A deep ROSAT survey XV. the average QSO spectrum and its evolution
A.J. Blair; G.C. Stewart; I. Georgantopoulos; B.J. Boyle; R.E. Griffiths; T. Shanks; O. Almaini;
11 Dec 1999
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8.
ASCA observations of deep ROSAT fields I. the nature of the X-ray source populations
I. Georgantopoulos; G.C. Stewart; A.J. Blair; T. Shanks; R.E. Griffiths; B.J. Boyle; O. Almaini; N. Roche;
15 Apr 1997
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9.
The European Large Area ISO Survey VII: ROSAT observations of ELAIS sources
S. Basilakos; I. Georgantopoulos; I. Pérez-Fournon; A. Efstathiou; M. Rowan-Robinson; F. Cabrera-Guerra; E. Gon'zalez-Solares; D. M. Alexander; S. Serjeant; S. Oliver;
21 Nov 2001   /  Mon.Not.Roy.Astron.Soc. 331 (2002) 417
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10.
X-ray luminous galaxies II. Chandra and XMM-Newton Observations of the 'composite' galaxy IRAS20051-1117
I. Georgantopoulos; I. Papadakis; A. Zezas; M.J. Ward;
11 Jun 2004   /  Astrophys.J. 614 (2004) 634-640
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11.
RXTE observations of Seyfert-2 galaxies: evidence for spectral variability
I. Georgantopoulos; I. Papadakis;
18 Aug 2000   /  Mon.Not.Roy.Astron.Soc. 322 (2001) 218
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12.
RXTE monitoring observations of Markarian 3
I. Georgantopoulos; I. Papadakis; R.S. Warwick; D.A. Smith; G.C. Stewart; R.G. Griffiths;
5 Mar 1999
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13.
The Serendipitous XMM-Newton Cluster Athens Survey (SEXCLAS): Sample selection and the cluster log N - log S
V. Kolokotronis; A. Georgakakis; S. Basilakos; I. Georgantopoulos; M. Plionis; S. Kitsionas; T. Gaga;
18 Mar 2005
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14.
X-ray Bright Optically Inactive Galaxies (XBONG) in XMM-Newton/SDSS fields: more diluted than absorbed?
I. Georgantopoulos; A. Georgakakis;
14 Dec 2004   /  Mon.Not.Roy.Astron.Soc. 358 (2005) 131-138
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15.
XMM-{em Newton} Observations of Optically Selected SDSS Clusters
M. Plionis; S. Basilakos; I. Georgantopoulos; A. Georgakakis;
12 Oct 2004   /  Astrophys.J. 622 (2005) L17-L20
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16.
The XMM-{em Newton}/2dF Survey - VI: Clustering and Bias of the Soft X-ray Point Sources
S. Basilakos; M. Plionis; A. Georgakakis; & I. Georgantopoulos;
28 Sep 2004   /  Mon.Not.Roy.Astron.Soc. 356 (2005) 183-191
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17.
On the use of photometric redshifts for X-ray selected AGNs
S. Kitsionas; E. Hatziminaoglou; A. Georgakakis; I. Georgantopoulos;
15 Jun 2004
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18.
The Clustering of XMM-Newton Hard X-ray Sources
S. Basilakos; A. Georgakakis; M. Plionis; I. Georgantopoulos;
21 Apr 2004   /  Astrophys.J. 607 (2004) L79-L82
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19.
The XMM-Newton/2dF survey IV. The X-ray spectral properties of the hard sources
I. Georgantopoulos; A. Georgakakis; A. Akylas; G.C. Stewart; O. Giannakis; T. Shanks; S. Kitsionas;
2 Apr 2004   /  Mon.Not.Roy.Astron.Soc. 352 (2004) 91
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20.
Comparison between optical and X-ray cluster detection methods
S. Basilakos; M. Plionis; S. Georgakakis; I. Georgantopoulos; T. Gaga; V. Kolokotronis; G. C. Stewart;
9 Oct 2003
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