Hostname: page-component-848d4c4894-4hhp2 Total loading time: 0 Render date: 2024-05-22T13:19:37.023Z Has data issue: false hasContentIssue false
  • English
  • Français

The jet detection in radio-loud narrow-line Seyfert 1 galaxies

Published online by Cambridge University Press:  23 June 2017

Minfeng Gu
Minfeng Gu*
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China email: gumf@shao.ac.cn
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

With relatively small black hole masses and high accretion rates, narrow-line Seyfert 1 galaxies are thought to be young AGNs. About 7% of them are radio-loud narrow-line Seyfert 1 galaxies (RLNLS1s). RLNLS1s allow us to re-address some of the key questions regarding the physics of jet formation. As the first step of the systematic study on the jet properties of RLNLS1s, we present the radio structure of fourteen RLNLS1s from VLBA observations at 5 GHz in 2013. Although all these sources are very radio-loud with R > 100, their jet properties are diverse, in terms of their pc-scale morphology and overall radio spectral shape. The core brightness temperatures of our sources are significantly lower than those of blazars, therefore, the beaming effect is generally not significant, compared to blazars. This implies that the bulk jet speed may likely be low in our sources.

Keywords

galaxies: activegalaxies: jetsgalaxies: Seyfertradio continuum: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 188 - 191
Copyright
Copyright © International Astronomical Union 2017 

References

Abdo, A. A., et al. 2009a, ApJ, 699, 976 Google Scholar
Abdo, A. A., et al. 2009b, ApJ, 707, L142 Google Scholar
Antón, S., Browne, I. W. A., & Marchã, M. J. 2008, A&A, 490, 583 Google Scholar
Blandford, R. D. & Znajek, R. L. 1977, MNRAS, 179, 433 Google Scholar
Cao, X. 2014, ApJ, 783, 51 Google Scholar
D'Ammando, F., Orienti, M., Finke, J., et al. 2012, MNRAS, 426, 317 Google Scholar
D'Ammando, F., Orienti, M., Doi, A., et al. 2013a, MNRAS, 433, 952 Google Scholar
D'Ammando, F., Orienti, M., Finke, J., et al. 2013b, MNRAS, 436, 191 Google Scholar
D'Ammando, F., Orienti, M., Larsson, J., & Giroletti, M. 2015, MNRAS, 452, 520 Google Scholar
D'Ammando, F., Orienti, M., Finke, J., et al. 2016, arXiv:1609.04434Google Scholar
Doi, A., et al. 2007, PASJ, 59, 703 Google Scholar
Doi, A., Asada, K., & Nagai, H. 2011, ApJ, 738, 126 Google Scholar
Foschini, L. 2011, Narrow-Line Seyfert 1 Galaxies and their Place in the Universe, 24Google Scholar
Ghisellini, G., Padovani, P., Celotti, A., & Maraschi, L. 1993, ApJ, 407, 65 Google Scholar
Giroletti, M., Paragi, Z., Bignall, H., et al. 2011, A&A, 528, L11 Google Scholar
Goodrich, R. W. 1989, ApJ, 342, 22 Google Scholar
Gu, M. & Chen, Y. 2010, AJ, 139, 2612 Google Scholar
Gu, M., Chen, Y., Komossa, S., et al. 2015, ApJS, 221, 3 Google Scholar
Gu, M., Chen, Y., Komossa, S., Yuan, W., & Shen, Z. 2016, Astronomische Nachrichten, 337, 125 Google Scholar
Kellermann, K. I., Pauliny-Toth, I. I. K.,1969, ApJ, 155, L71 Google Scholar
Komossa, S., Voges, W., Xu, D., Mathur, S., Adorf, H. M., Lemson, G., Duschl, W., & Grupe D.,2006, AJ, 132, 531 Google Scholar
Komossa, S. 2008, Rev. Mex. AA Ser. Conf., 32, 86 Google Scholar
Komossa, S., Xu, D., Fuhrmann, L., et al. 2015, A&A, 574, A121 Google Scholar
Kovalev, Y. Y., Kellermann, K. I., Lister, M. L., et al. 2005, AJ, 130, 2473 Google Scholar
Kovalev, Y. Y., Aller, H. D., Aller, M. F., et al. 2009, ApJL, 696, L17 Google Scholar
León Tavares, J., Kotilainen, J., Chavushyan, V., et al. 2014, ApJ, 795, 58 Google Scholar
Liao, N.-H., Liang, Y.-F., Weng, S.-S., Gu, M.-F., & Fan, Y.-Z. 2015, arXiv:1510.05584Google Scholar
Lister, M. L., Aller, M. F., Aller, H. D., et al. 2016, AJ, 152, 12 Google Scholar
Osterbrock, D. E., Pogge, R. W.,1985, ApJ, 297, 166 Google Scholar
Readhead, A. C. S. 1994, ApJ, 426, 51 Google Scholar
Richards, J. L. & Lister, M. L. 2015, ApJL, 800, L8 Google Scholar
Schulz, R., Kreikenbohm, A., Kadler, M., et al. 2016, A&A, 588, A146 Google Scholar
Sulentic, J. W., Zamfir, S., Marziani, P., & Dultzin, D. 2008, Revista Mexicana de Astronomia y Astrofisica Conference Series, 32, 51 Google Scholar
Wajima, K., Fujisawa, K., Hayashida, M., et al. 2014, ApJ, 781, 75 Google Scholar
Yao, S., Yuan, W., Komossa, S., et al. 2015, AJ, 150, 23 Google Scholar
Yuan, W., Zhou, H. Y., Komossa, S., Dong, X. B., Wang, T. G., Lu, H. L., & Bai J. M.,2008, ApJ, 685, 801 Google Scholar
Zhou, H., Wang, T., Yuan, W., Lu, H., Dong, X., Wang, J., & Lu Y.,2006, ApJS, 166, 128 Google Scholar
Zhou, H., et al., 2007, ApJ, 658, L13 Google Scholar