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Cosmological Studies from Radio Source Samples

Published online by Cambridge University Press:  26 May 2016

S. Rawlings
S. Rawlings*
Affiliation:
University of Oxford, Astrophysics, Keble Road, Oxford, OX1 3RH, UK

Abstract

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I review some recent cosmological studies based on redshift surveys of radio sources selected at low frequencies. The accretion rate onto the central black hole is identified as the basis of a crude physical division of the low-frequency population into two sub-populations: the first comprises ‘Eddington-tuned’ (high accretion rate) quasars and their torus-hidden counterparts; the second comprises ‘starved quasars’ like M87. There exist remarkable similarities between the shapes and evolutionary behaviours of the luminosity functions of radio sources and radio-quiet quasars; all luminous AGN are ∼ 300—times rarer at epochs corresponding to z ∼ 0 than at z ∼ 2.5. I argue that any evidence that quasars were intrinsically rarer at z ∼ 5 than at z ∼ 2.5 is as yet both tentative and indirect. A simple calculation suggests that the radio source population has been over-looked as a potentially important contributor to the entropy budget of the Universe. A recent sub-mm survey of radio sources is used to demonstrate a connection between the events which trigger jets and intense bursts of star formation, and a close link between the histories of star formation and AGN activity is proposed. I discuss the aims and methods of future large redshift surveys of radio sources, emphasising the importance of dovetailing these with the development of robust physical models for radio sources and their epoch-dependent environments.

Type
Part 1: Radio Source Surveys and Cosmology
Information
Symposium - International Astronomical Union , Volume 199: The Universe at Low Radio Frequencies , 2002 , pp. 34 - 49
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Almaini, O., Lawrence, A. & Boyle, B. J., 1999, MNRAS, 305, 59 CrossRefGoogle Scholar
Archibald, E.N., Dunlop, J.S., Hughes, D.H., Rawlings, S., Eales, S.A. & Ivison, R.J., 2000, MNRAS1, submitted, [astro-ph/0002083] Google Scholar
Baum, S.A. & Heckman, T.M., 1989, ApJ, 336, 702 Google Scholar
Blandford, R. D. & Znajek, R. L., 1977, MNRAS, 179, 433 Google Scholar
Blundell, K.M. & Rawlings, S., 1999, Nature, 399, 330 Google Scholar
Blundell, K.M. & Rawlings, S., 2000, AJ, 119, 1111 CrossRefGoogle Scholar
Blundell, K.M., Rawlings, S., Eales, S.A., Taylor, G.B. & Bradley, A.D., 1998, MNRAS, 295, 265 CrossRefGoogle Scholar
Blundell, K.M., Rawlings, S., Riley, J.M., Willott, C.J. & Laing, R.A., 2000, New. Astron., to be submitted Google Scholar
Blundell, K.M., Rawlings, S. & Willott, C.J., 1999, AJ, 117, 677 CrossRefGoogle Scholar
Boyle, B.J. & Terlevich, R.J., 1998, MNRAS, 293, L49 Google Scholar
Chiaberge, M., Capetti, A. & Celotti, A., 1999, A&A, 349, 77 Google Scholar
Chiaberge, M., Capetti, A. & Celotti, A., 2000, A&A, 355, 873 Google Scholar
Corbett, E.A., Robinson, A., Axon, D.J. & Hough, J.H., 2000, MNRAS, 311, 485 Google Scholar
Crawford, C.S., Fabian, A.C., Gandhi, P., Wilman, R.J. & Johnstone, R.M., 2000, MNRAS, submitted, [astro-ph/0005242] Google Scholar
Dalton, G.B., Croft, R.A.C., Efstathiou, G., Sutherland, W.J., Maddox, S.J. & Davis, M., 1994, MNRAS, 271, L47 Google Scholar
Dey, A., van Breugel, W., Vacca, W.D. & Antonucci, R., 1997, ApJ, 490, 698 Google Scholar
Dunlop, J.S. & Peacock, J.A., 1990, MNRAS, 247, 19 Google Scholar
Eales, S., Rawlings, S., Law-Green, D., Cotter, G. & Lacy, M., 1997, MNRAS, 291, 593 CrossRefGoogle Scholar
Efstathiou, G. & Rees, M.J., 1988, MNRAS, 230, 5 Google Scholar
Elvis, M. et al., 1994, ApJS, 95, 1 Google Scholar
Faber, S.M. et al., 1997, AJ, 114, 1771 Google Scholar
Fanaroff, B.L. & Riley, J.M., 1974, MNRAS, 167, 31P Google Scholar
Ford, H.C. et al., 1994, ApJ, 435L, 27 Google Scholar
Gallego, J., Zamorano, J., Aragon-Salamanca, A. & Rego, M., 1995, ApJ, 455, 1 Google Scholar
Goldschmidt, P., Kukula, M. J., Miller, L. & Dunlop, J. S., 1999, ApJ, 511, 612 Google Scholar
Haiman, Z. & Loeb, A., 1997, ApJ, 483, 21 Google Scholar
Hine, R.G. & Longair, M.S., 1979, MNRAS, 188, 111 Google Scholar
Hughes, D.H., Dunlop, J.S. & Rawlings, S., 1997, MNRAS, 289, 766 Google Scholar
Hughes, D.H. et al., 1998, Nature, 394, 241 Google Scholar
Jarvis, M. & Rawlings, S., 2000, MNRAS, in press, [astro-ph/0006081] Google Scholar
Jarvis, M., Rawlings, S., Willott, C.J., Blundell, K.M., Eales, S.A., Lacy, M., 2000, MNRAS, submitted Google Scholar
Kaiser, C. R. & Alexander, P., 1997, MNRAS, 286, 215 Google Scholar
Kaiser, C. R., Dennett-Thorpe, J. & Alexander, P., 1997, MNRAS, 292, 723 Google Scholar
Kaiser, N., ApJ, 1991, 383, 104 Google Scholar
Kochanek, C.S., 1996, ApJ, 473, 595 Google Scholar
Lacy, M., Rawlings, S., Hill, G.J., Bunker, A.J., Ridgway, S.E. & Stern, D., 1999, MNRAS, 308, 1096 Google Scholar
Laing, R.A., Jenkins, C.R., Wall, J.V. & Unger, S.W., 1994, in ‘Physics of Active Galactic Nuclei’ , ed Bicknell, G., Proceedings of the Stromlo Centenary Symposium, Springer-Verlag, Berlin, p201 Google Scholar
Laing, R.A., Riley, J.M., & Longair, M.S., 1983, MNRAS, 204, 151 Google Scholar
Lawrence, A., 1991, MNRAS, 252, 586 Google Scholar
Ledlow, M.J. & Owen, F.N., 1996, AJ, 112, 9 Google Scholar
Longair, M.S., 1999, in ‘The Hy-Redshift Universe: Galaxy Formation and Evolution at High Redshift , eds Bunker, A.J. and van Breugel, W.J.M., A.S.P. Conference Series Vol. 193, p11 Google Scholar
Magliocchetti, M., Maddox, S.J., Lahav, O. & Wall, J.V., 1998, MNRAS, 300, 257 Google Scholar
Maiolino, R., Salvati, M., Bassani, L., Dadina, M., della Ceca, R., Matt, G., Risaliti, G. & Zamorani, G., 1998, A&A, 338, 781 Google Scholar
McGilchrist, M.M., Baldwin, J.E., Riley, J.M., Titterington, D.J., Waldram, E.M. & Warner, P.J., 1990, MNRAS, 246, 110 Google Scholar
McLure, R. J., Kukula, M. J., Dunlop, J. S., Baum, S. A., O'Dea, C. P. & Hughes, D. H., 1999, MNRAS, 308, 377 Google Scholar
Miller, P., Rawlings, S. & Saunders, R., 1993, MNRAS, 263, 425 Google Scholar
Miyaji, T., Hasinger, G. & Schmidt, ML, 2000, A&A, 353, 25 Google Scholar
Mushotzky, R. F., Cowie, L. L., Barger, A. J. & Arnaud, K. A., 2000, Nature, 404, 459 Google Scholar
Rawlings, S., Eales, S.A. & Lacy, ML, 2000, MNRAS, submitted Google Scholar
Rawlings, S., Lacy, M., Blundell, K.M., Eales, S.A., Bunker, A.J. & Garrington, S.T., 1996, Nature, 383, 502 Google Scholar
Rawlings, S. & Saunders, R. 1991, Nature, 349, 138 Google Scholar
Richstone, D., et al., 1998, Nature, 395, 14 Google Scholar
Salucci, P., Szuszkiewicz, E., Monaco, P. & Danese, L., 1999, MNRAS, 307, 637 Google Scholar
Scheuer, P.A.G., 1974, MNRAS, 166, 513 Google Scholar
Serjeant, S., Rawlings, S., Maddox, S.J., Baker, J.C., Clements, D., Lacy, M. & Lilje, P.B., 1998, MNRAS, 294, 494 Google Scholar
Shaver, P.A., Wall, J.V., Kellermann, K.I., Jackson, C.A. & Hawkins, M.R.S., 1996, Nature, 384, 439 Google Scholar
Silk, J. & Rees, M.J., 1998, A&A, 331, 1 Google Scholar
Somerville, R.S. & Primack, J.R., 1999, MNRAS, 310, 1087 Google Scholar
Storrie-Lombardi, L. J., McMahon, R. G. & Irwin, M. J., 1996, MNRAS, 283, 79 Google Scholar
Valageas, P. & Silk, J., 1999, A&A, 350, 725 Google Scholar
Warren, S.J., Hewett, P.C. & Osmer, P.S., 1994, ApJ, 421, 412 Google Scholar
Willott, C.J., Rawlings, S. & Blundell, K.M., 2000a, MNRAS, submitted Google Scholar
Willott, C.J., Rawlings, S., Blundell, K.M. & Lacy, M., 1998, MNRAS, 300, 625 Google Scholar
Willott, C.J., Rawlings, S., Blundell, K.M. & Lacy, M., 1999, MNRAS, 309, 1017 Google Scholar
Willott, C.J., Rawlings, S., Blundell, K.M. & Lacy, M., 2000b, MNRAS, in press, [astro-ph/0003461] Google Scholar
Willott, C.J., Rawlings, S., Blundell, K.M. & Lacy, M., 2000c, MNRAS, submitted Google Scholar
Willott, C.J., Rawlings, S., Blundell, K.M., Lacy, M., Hill, G.J. & Scott, S., 2000d, MNRAS, to be submitted Google Scholar
Willott, C.J., Rawlings, S. & Jarvis, M., 2000e, MNRAS, 313, 237 Google Scholar
Wilman, R. J. & Fabian, A. C., 1999, MNRAS, 309, 862 Google Scholar
Wilson, A. S. & Colbert, E. J. M., 1995, ApJ, 438, 62 Google Scholar