X-ray spectroscopy and variability of AGN detected in the 2 Ms Chandra Deep Field-North Survey

Advances in Space Research

Volumn 34, Issue 12 SPEC.ISS., 2004, Pages 2555-2560

  Bauer, F E ^a   Vignali, C ^a   Alexander, D M ^a   Brandt, W N ^a   Garmire, G P ^a   Hornschemeier, A E ^a   Broos, P S ^a   Townsley, L K ^a   Schneider, D P ^a  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

2 Ms Chandra Deep Field North Survey; Variability of AGN; X ray spectroscopy

Indexed keywords

CONTINUUM MECHANICS; GALAXIES; MATHEMATICAL MODELS; PHOTONS; REFLECTION; SPECTRUM ANALYSIS; X RAYS;

2 MS CHANDRA DEEP FIELD-NORTH SURVEY; POWER LAW; VARIABILITY OF ACTIVE GALACTIC NUCLEI (AGN); X-RAY LUMINOSITY;

X RAY SPECTROSCOPY;

EID: 9544251406     PISSN: 02731177     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.asr.2003.02.082     Document Type: Article

References (34)

1. Alexander, D.M., Bauer, F.E., Brandt, W.N., et al. The Chandra Deep Field North Survey. XIV. X-ray detected obscured AGNs and starburst galaxies in the bright subinm source population. Astron. J., in press, 2003a.
2. Alexander, D.M., Bauer, F.E., Brandt, W.N., et al. The Chandra Deep Field North Survey. XV. 2 Ms source catalogs. Astron. J., submitted, 2003b.
3. Alexander, D.M., Brandt, W.N., Hornschemeier, A.E., et al. The Chandra Deep Field North Survey. VI. The nature of the optically faint X-ray source population. Astron. J. 122, 2156-2176, 2001.
4. Almaini, O., Lawrence, A., Shanks, T., et al. X-ray variability in a deep, flux-limited sample of QSOs. Mon. Not. R. Astron. Soc. 315, 325-336, 2000.
5. Arnaud, K.A. XSPEC: The first ten years, in: ASP Conference Series 101: Astronomical Data Analysis Software and Systems V, vol. 5, pp. 17-20, 1996.
6. Barger, A.J., Cowie, L.L., Brandt, W.N., et al. X-ray, optical, and infrared imaging and spectral properties of the 1 Ms Chandra Deep Field North sources. Astron. J. 124, 1839-1885, 2002.
7. Barger, A.J., Cowie, L.L., Mushotzky, R.F., et al. The nature of the hard X-ray background sources: optical, near-infrared, submillimeter, and radio properties. Astron. J. 121, 662-682, 2001.
8. Bassani, L., Dadina, M., Maiolino, R., et al. A three-dimensional diagnostic diagram for Seyfert 2 galaxies: probing X-ray absorption and Compton thickness. Astrophys. J. Suppl. 121, 473-482, 1999.
9. Bauer, F.E., Vignali, C., Alexander, D.M., et al. X-ray spectral analysis from the Chandra Deep Fields. Astron. J., in preparation, 2003.
10. Brandt, W.N., Alexander, D.M., Hornschemeier, A.E., et al. The Chandra Deep Field North Survey. V. 1 Ms source catalogs. Astron. J. 122, 2810-2832, 2001.
11. Brandt, W.N., Mathur, S., Elvis, M. A comparison of the hard ASCA spectral slopes of broad- and narrow-line Seyfert 1 galaxies. Man. Not. R. Astron. Soc. 285, L25-L30, 1997.
12. Cohen, J.G., Hogg, D.W., Blandford, R., et al. Caltech Faint Galaxy Redshift Survey. X. A redshift survey in the region of the Hubble Deep Field North. Astrophys. J. 538, 29-52, 2000.
13. Comastri, A., Setti, G., Zamorani, G., et al. The contribution of AGNs to the X-ray background. Astron. Astrophys. 296, 1-12, 1995.
14. Dawson, S., Stern, D., Bunker, A.J., et al. Serendipitously detected galaxies in the Hubble Deep Field. Astron. J. 122, 598-610, 2001.
15. George, I.M., Turner, T.J., Yaqoob, T., et al. X-ray observations of optically selected, radio-quiet quasars. I. The ASCA results. Astrophys. J. 531, 52-80, 2000.
16. Grupe, D., Thomas, H.-C., Beuermann, K. X-ray variability in a complete sample of soft X-ray selected AGN. Astron. Astrophys. 367, 470-486, 2001.
17. Iwasawa, K., Taniguchi, Y. The X-ray Baldwin effect. Astrophys. J. Lett. 413, L15-L18, 1993.
18. Lawson, A.J., Turner, M.J.L. GINGA observations of the X-ray spectra of quasars. Mon. Not. R. Astron. Soc. 288, 920-944, 1997.
19. Maiolino, R., Salvati, M., Bassani, L., et al. Heavy obscuration in X-ray weak AGNs. Astron. Astrophys. 338, 781-794, 1998.
20. Manners, J., Almaini, O., Lawrence, A. The X-ray variability of high-redshift QSOs. Mon. Not. R. Astron. Soc. 330, 390-398, 2002.
21. Matt, G., Fabian, A.C., Guainazzi, M., et al. The.X-ray spectra of Compton-thick Seyfert 2 galaxies as seen by BeppoSAX. Mon. Not. R. Astron. Soc. 318, 173-179, 2000.
22. Mushotzky, R.F., Cowie, L.L., Barger, A.J., et al. Resolving the extragalactic hard X-ray background. Nature 404, 459-464, 2000.
23. Nandra, K., George, I.M., Mushotzky, R.F., et al. ASCA observations of Seyfert 1 galaxies. I. Data analysis, imaging, and timing. Astrophys. J. 476, 70-82, 1997a.
24. Nandra, K., George, I.M., Mushotzky, R.F., et al. ASCA Observations of Seyfert 1 Galaxies. II. Relativist I Iron K alpha Emission. Astrophys. J. 477, 602-622, 1997b.
25. Nandra, K., George, I.M., Mushotzky, R.F., et al. On the dependence of the iron k-line profiles with luminosity in active galactic nuclei. Astrophys. J. Lett. 488, L91-L94, 1997c.
26. Nandra, K., Pounds, K.A. GINGA observations of the X-ray spectra of Seyfert galaxies. Mon. Not. R. Astron. Soc. 268, 405-429, 1994.
27. Reeves, J.N., Turner, M.J.L. X-ray spectra of a large sample of quasars with ASCA. Mon. Not. R. Astron. Soc. 316, 234-248, 2000.
28. Risaliti, G., Elvis, M., Nicastro, F. Ubiquitous variability of X-ray-absorbing column densities in Seyfert 2 galaxies. Astrophys. J. 571, 234-246, 2002.
29. Risaliti, G., Maiolino, R., Salvati, M. The distribution of absorbing column densities among Seyfei: galaxies. Astrophys. J. 522, 157-164, 1999.
30. Rosati, P., Tozzi, P., Giacconi, R., et al. The Chandra deep field-south: the 1 million second exposure. Astrophys. J. 566, 667-674, 2002.
31. Smith, D.A., Done, C. Unified theories of active galactic nuclei: a hard X-ray sample of Seyfert 2 galaxies. Mon. Not. R. Astron. Soc. 280, 355-377, 1996.
32. Turner, T.J., George, I.M., Nandra, K., et al. ASCA observations of type 2 Seyfert galaxies. II. The importance of X-ray scattering and reflection. Astrophys. J. 488, 164-173, 1997.
33. Turner, T.J., George, I.M., Nandra, K., et al. On X-ray variability in Seyfert galaxies. Astrophys. J. 524, 667-673, 1999.
34. Vignali, C., Bauer, F.E., Alexander, D.M., et al. The Chandra Deep Field-North Survey. XVI. The X-ray properties of moderate-luminosity active galaxies at z > 4. Astrophys. J. Lett. 580, L105-L109, 2002.