A Counterjet in the Nucleus of Centaurus A

D.l. Jones; S.j. Tingay; R.a. Preston; D.l. Jauncey; J.e. Reynolds; J.e.j. Lovell; P.m. Mcculloch; A.k. Tzioumis; M.e. Costa; D.w. Murphy; D.l. Meier; R.w. Clay; P.g. Edwards; S.p. Ellingsen; R.h. Ferris; R.g. Gough; P. Harbison; P.a. Jones; E.a. King; A.j. Kemball; V. Migenes; G.d. Nicolson; M.w. Sinclair; T.d. Van Ommen; R.m. Wark; G.l. White

doi:10.1017/S0074180900079869

A Counterjet in the Nucleus of Centaurus A

D.l. Jones, S.j. Tingay, R.a. Preston, D.l. Jauncey, J.e. Reynolds, J.e.j. Lovell, P.m. Mcculloch, A.k. Tzioumis, M.e. Costa, D.w. Murphy, D.l. Meier, R.w. Clay, P.g. Edwards, S.p. Ellingsen, R.h. Ferris, R.g. Gough, P. Harbison, P.a. Jones, E.a. King, A.j. KemballV. Migenes, G.d. Nicolson, M.w. Sinclair, T.d. Van Ommen, R.m. Wark, G.l. White

Research output: Contribution to journal › Article › peer-review

Abstract

Centaurus A (NGC 5128) is the nearest giant radio galaxy. It is a Fanaroff-Riley type 1 (low luminosity) radio source, but the compact radio source in the nucleus is strong enough that VLBI imaging has been possible with both the SHEVE array and the VLBA at several frequencies. These observations have detected a sub-parsec scale counterjet. This shows that jet formation in at least some FR I sources is intrinsically two-sided over very small distances and the radio jets in Centaurus A are probably only moderately relativistic. We also find evidence that the center of activity in Centaurus A is partially obscured by a disk or torus of dense plasma.

Original language	English (US)
Pages (from-to)	23-24
Journal	Symposium - International Astronomical Union
Volume	175
DOIs	https://doi.org/10.1017/S0074180900079869
State	Published - Jan 1 1996

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Jones, D. L., Tingay, S. J., Preston, R. A., Jauncey, D. L., Reynolds, J. E., Lovell, J. E. J., Mcculloch, P. M., Tzioumis, A. K., Costa, M. E., Murphy, D. W., Meier, D. L., Clay, R. W., Edwards, P. G., Ellingsen, S. P., Ferris, R. H., Gough, R. G., Harbison, P., Jones, P. A., King, E. A., ... White, G. L. (1996). A Counterjet in the Nucleus of Centaurus A. Symposium - International Astronomical Union, 175, 23-24. https://doi.org/10.1017/S0074180900079869

Jones, DL, Tingay, SJ, Preston, RA, Jauncey, DL, Reynolds, JE, Lovell, JEJ, Mcculloch, PM, Tzioumis, AK, Costa, ME, Murphy, DW, Meier, DL, Clay, RW, Edwards, PG, Ellingsen, SP, Ferris, RH, Gough, RG, Harbison, P, Jones, PA, King, EA, Kemball, AJ, Migenes, V, Nicolson, GD, Sinclair, MW, Van Ommen, TD, Wark, RM & White, GL 1996, 'A Counterjet in the Nucleus of Centaurus A', Symposium - International Astronomical Union, vol. 175, pp. 23-24. https://doi.org/10.1017/S0074180900079869

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title = "A Counterjet in the Nucleus of Centaurus A",

abstract = "Centaurus A (NGC 5128) is the nearest giant radio galaxy. It is a Fanaroff-Riley type 1 (low luminosity) radio source, but the compact radio source in the nucleus is strong enough that VLBI imaging has been possible with both the SHEVE array and the VLBA at several frequencies. These observations have detected a sub-parsec scale counterjet. This shows that jet formation in at least some FR I sources is intrinsically two-sided over very small distances and the radio jets in Centaurus A are probably only moderately relativistic. We also find evidence that the center of activity in Centaurus A is partially obscured by a disk or torus of dense plasma.",

author = "D.l. Jones and S.j. Tingay and R.a. Preston and D.l. Jauncey and J.e. Reynolds and J.e.j. Lovell and P.m. Mcculloch and A.k. Tzioumis and M.e. Costa and D.w. Murphy and D.l. Meier and R.w. Clay and P.g. Edwards and S.p. Ellingsen and R.h. Ferris and R.g. Gough and P. Harbison and P.a. Jones and E.a. King and A.j. Kemball and V. Migenes and G.d. Nicolson and M.w. Sinclair and {Van Ommen}, T.d. and R.m. Wark and G.l. White",

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doi = "10.1017/S0074180900079869",

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TY - JOUR

T1 - A Counterjet in the Nucleus of Centaurus A

AU - Jones, D.l.

AU - Tingay, S.j.

AU - Preston, R.a.

AU - Jauncey, D.l.

AU - Reynolds, J.e.

AU - Lovell, J.e.j.

AU - Mcculloch, P.m.

AU - Tzioumis, A.k.

AU - Costa, M.e.

AU - Murphy, D.w.

AU - Meier, D.l.

AU - Clay, R.w.

AU - Edwards, P.g.

AU - Ellingsen, S.p.

AU - Ferris, R.h.

AU - Gough, R.g.

AU - Harbison, P.

AU - Jones, P.a.

AU - King, E.a.

AU - Kemball, A.j.

AU - Migenes, V.

AU - Nicolson, G.d.

AU - Sinclair, M.w.

AU - Van Ommen, T.d.

AU - Wark, R.m.

AU - White, G.l.

PY - 1996/1/1

Y1 - 1996/1/1

N2 - Centaurus A (NGC 5128) is the nearest giant radio galaxy. It is a Fanaroff-Riley type 1 (low luminosity) radio source, but the compact radio source in the nucleus is strong enough that VLBI imaging has been possible with both the SHEVE array and the VLBA at several frequencies. These observations have detected a sub-parsec scale counterjet. This shows that jet formation in at least some FR I sources is intrinsically two-sided over very small distances and the radio jets in Centaurus A are probably only moderately relativistic. We also find evidence that the center of activity in Centaurus A is partially obscured by a disk or torus of dense plasma.

AB - Centaurus A (NGC 5128) is the nearest giant radio galaxy. It is a Fanaroff-Riley type 1 (low luminosity) radio source, but the compact radio source in the nucleus is strong enough that VLBI imaging has been possible with both the SHEVE array and the VLBA at several frequencies. These observations have detected a sub-parsec scale counterjet. This shows that jet formation in at least some FR I sources is intrinsically two-sided over very small distances and the radio jets in Centaurus A are probably only moderately relativistic. We also find evidence that the center of activity in Centaurus A is partially obscured by a disk or torus of dense plasma.

U2 - 10.1017/S0074180900079869

DO - 10.1017/S0074180900079869

M3 - Article

SN - 0074-1809

VL - 175

SP - 23

EP - 24

JO - Symposium - International Astronomical Union

JF - Symposium - International Astronomical Union

ER -

A Counterjet in the Nucleus of Centaurus A

Abstract

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