Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549
Abstract
:1. Introduction
2. Observations and Data Analysis
3. Results
3.1. Source Structure
3.2. Jet Component Proper Motion
3.3. Jet Parameters
4. Discussion
5. Summary and Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
AGN | active galactic nuclei |
BH | black hole |
FSRQ | flat-spectrum radio quasar |
FWHM | full width at half maximum |
NLS1 | narrow-line Seyfert 1 galaxy |
NRAO | National Radio Astronomy Observatory |
QPO | quasiperiodic oscillation |
RL-NLS1 | radio-loud narrow-line Seyfert 1 galaxy |
SED | spectral energy distribution |
SMBH | supermassive black hole |
SNR | signal-to-noise ratio |
Sy1 | Seyfert 1 galaxy |
Sy2 | Seyfert 2 galaxy |
VLBA | Very Long Baseline Array |
VLBI | very long baseline interferometry |
References
- Seyfert, C.K. Nuclear Emission in Spiral Nebulae. Astrophys. J. 1943, 97, 28. [Google Scholar] [CrossRef]
- Antonucci, R. Unified models for active galactic nuclei and quasars. Annu. Rev. Astron. Astrophys. 1993, 31, 473–521. [Google Scholar] [CrossRef]
- Osterbrock, D.E.; Pogge, R.W. The spectra of narrow-line Seyfert 1 galaxies. Astrophys. J. 1985, 297, 166–176. [Google Scholar] [CrossRef]
- Cohen, R.D. The narrow-line region of intermediate Seyfet galaxies. Astrophys. J. 1983, 273, 489–504. [Google Scholar] [CrossRef]
- Goodrich, R.W. Spectropolarimetry of “Narrow-Line” Seyfert 1 Galaxies. Astrophys. J. 1989, 342, 224. [Google Scholar] [CrossRef]
- Urry, C.M.; Padovani, P. Unified Schemes for Radio-Loud Active Galactic Nuclei. Publ. Astron. Soc. Pac. 1995, 107, 803. [Google Scholar] [CrossRef]
- Padovani, P. On the two main classes of active galactic nuclei. Nat. Astron. 2017, 1, 0194. [Google Scholar] [CrossRef]
- Abdollahi, S.; Acero, F.; Ackermann, M.; Ajello, M.; Atwood, W.B.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; et al. Fermi Large Area Telescope Fourth Source Catalog. Astrophys. J. Suppl. Ser. 2020, 247, 33. [Google Scholar] [CrossRef]
- Komossa, S.; Voges, W.; Xu, D.; Mathur, S.; Adorf, H.M.; Lemson, G.; Duschl, W.J.; Grupe, D. Radio-loud Narrow-Line Type 1 Quasars. Astron. J. 2006, 132, 531–545. [Google Scholar] [CrossRef]
- Abdo, A.A.; Ackermann, M.; Ajello, M.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Battelino, M.; Baughman, B.M.; et al. Fermi/Large Area Telescope Discovery of Gamma-Ray Emission from a Relativistic Jet in the Narrow-Line Quasar PMN J0948+0022. Astron. J. 2009, 699, 976–984. [Google Scholar] [CrossRef]
- Abdo, A.A.; Ackermann, M.; Ajello, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; et al. Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei. Astrophys. J. Lett. 2009, 707, L142–L147. [Google Scholar] [CrossRef]
- Laor, A. On Black Hole Masses and Radio Loudness in Active Galactic Nuclei. Astrophys. J. Lett. 2000, 543, L111–L114. [Google Scholar] [CrossRef]
- Hartman, R.C.; Bertsch, D.L.; Bloom, S.D.; Chen, A.W.; Deines-Jones, P.; Esposito, J.A.; Fichtel, C.E.; Friedlander, D.P.; Hunter, S.D.; McDonald, L.M.; et al. The Third EGRET Catalog of High-Energy Gamma-Ray Sources. Astrophys. J. Suppl. Ser. 1999, 123, 79–202. [Google Scholar] [CrossRef]
- Foschini, L. Jetted Narrow-Line Seyfert 1 Galaxies & Co.: Where Do We Stand? Universe 2020, 6, 136. [Google Scholar] [CrossRef]
- Boroson, T.A. Black Hole Mass and Eddington Ratio as Drivers for the Observable Properties of Radio-loud and Radio-quiet QSOs. Astron. J. 2002, 565, 78–85. [Google Scholar] [CrossRef]
- Järvelä, E.; Lähteenmäki, A.; León-Tavares, J. Statistical multifrequency study of narrow-line Seyfert 1 galaxies. Astron. Astrophys. 2015, 573, A76. [Google Scholar] [CrossRef]
- Berton, M.; Caccianiga, A.; Foschini, L.; Peterson, B.M.; Mathur, S.; Terreran, G.; Ciroi, S.; Congiu, E.; Cracco, V.; Frezzato, M.; et al. Compact steep-spectrum sources as the parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies. Astron. Astrophys. 2016, 591, A98. [Google Scholar] [CrossRef]
- D’Ammando, F. Relativistic Jets in Gamma-Ray-Emitting Narrow-Line Seyfert 1 Galaxies. Galaxies 2019, 7, 87. [Google Scholar] [CrossRef]
- Paliya, V.S. Gamma-ray emitting narrow-line Seyfert 1 galaxies: Past, present, and future. J. Astrophys. Astron. 2019, 40, 39. [Google Scholar] [CrossRef]
- Rakshit, S.; Schramm, M.; Stalin, C.S.; Tanaka, I.; Paliya, V.S.; Pal, I.; Kotilainen, J.; Shin, J. TXS 1206 + 549: A new γ-ray-detected narrow-line Seyfert 1 galaxy at redshift 1.34? Mon. Not. R. Astron. Soc. 2021, 504, L22–L27. [Google Scholar] [CrossRef]
- Schneider, D.P.; Hall, P.B.; Richards, G.T.; Vanden Berk, D.E.; Anderson, S.F.; Fan, X.; Jester, S.; Stoughton, C.; Strauss, M.A.; SubbaRao, M.; et al. The Sloan Digital Sky Survey Quasar Catalog. III. Third Data Release. Astron. J. 2005, 130, 367–380. [Google Scholar] [CrossRef]
- Tan, C.; Xue, R.; Du, L.M.; Xi, S.Q.; Wang, Z.R.; Xie, Z.H. The Physical Properties of Fermi-4LAC Flat Spectrum Radio Quasars. Astrophys. J. Suppl. Ser. 2020, 248, 27. [Google Scholar] [CrossRef]
- Ren, C.; Sun, S.; Zhang, P. A Possible Optical Quasiperiodic Oscillation of 134 days in the Radio-loud Narrow-line Seyfert 1 Galaxy TXS 1206+549 at z = 1.34. Astron. J. 2024, 961, 38. [Google Scholar] [CrossRef]
- Hales, S.E.G.; Masson, C.R.; Warner, P.J.; Baldwin, J.E. The 6C survey of radio sources—III. The zone 48<Dec<68, 05h25<RA<18h17. Mon. Not. R. Astron. Soc. 1990, 246, 256–262. [Google Scholar]
- Shimwell, T.W.; Röttgering, H.J.A.; Best, P.N.; Williams, W.L.; Dijkema, T.J.; de Gasperin, F.; Hardcastle, M.J.; Heald, G.H.; Hoang, D.N.; Horneffer, A.; et al. The LOFAR Two-metre Sky Survey. I. Survey description and preliminary data release. Astron. Astrophys. 2017, 598, A104. [Google Scholar] [CrossRef]
- Richards, J.L.; Hovatta, T.; Max-Moerbeck, W.; Pavlidou, V.; Pearson, T.J.; Readhead, A.C.S. Connecting radio variability to the characteristics of gamma-ray blazars. Mon. Not. R. Astron. Soc. 2014, 438, 3058–3069. [Google Scholar] [CrossRef]
- Pajdosz-Śmierciak, U.; Śmierciak, B.; Jamrozy, M. Possible jet reorientation in low-frequency radio structures of blazars. Mon. Not. R. Astron. Soc. 2022, 514, 2122–2134. [Google Scholar] [CrossRef]
- Rakshit, S.; Stalin, C.S.; Hota, A.; Konar, C. Rare Finding of a 100 Kpc Large, Double-lobed Radio Galaxy Hosted in the Narrow-line Seyfert 1 Galaxy SDSS J103024.95+551622.7. Astron. J. 2018, 869, 173. [Google Scholar] [CrossRef]
- Gabányi, K.É.; Frey, S.; Veres, P.; Moór, A. The rare extended radio-loud narrow-line Seyfert 1 galaxy SDSS J1030+5516 at high resolution. Astrophys. Space Sci. 2019, 364, 68. [Google Scholar] [CrossRef]
- Doi, A.; Nakahara, S.; Nakamura, M.; Kino, M.; Kawakatu, N.; Nagai, H. Radio jet structures at ∼100 pc and larger scales of the γ-ray-emitting narrow-line Seyfert 1 galaxy PMN J0948+0022. Mon. Not. R. Astron. Soc. 2019, 487, 640–649. [Google Scholar] [CrossRef]
- Helmboldt, J.F.; Taylor, G.B.; Tremblay, S.; Fassnacht, C.D.; Walker, R.C.; Myers, S.T.; Sjouwerman, L.O.; Pearson, T.J.; Readhead, A.C.S.; Weintraub, L.; et al. The VLBA Imaging and Polarimetry Survey at 5 GHz. Astron. J. 2007, 658, 203–216. [Google Scholar] [CrossRef]
- Linford, J.D.; Taylor, G.B.; Romani, R.W.; Helmboldt, J.F.; Readhead, A.C.S.; Reeves, R.; Richards, J.L. Contemporaneous VLBA 5 GHz Observations of Large Area Telescope Detected Blazars. Astron. J. 2012, 744, 177. [Google Scholar] [CrossRef]
- Lister, M. Radio Properties of Narrow-Line Seyfert 1 Galaxies. In Proceedings of the Revisiting Narrow-Line Seyfert 1 Galaxies and Their Place in the Universe Conference, Padova, Italy, 9–13 April 2018; p. 22. [Google Scholar] [CrossRef]
- Charlot, P.; Jacobs, C.S.; Gordon, D.; Lambert, S.; de Witt, A.; Böhm, J.; Fey, A.L.; Heinkelmann, R.; Skurikhina, E.; Titov, O.; et al. The third realization of the International Celestial Reference Frame by very long baseline interferometry. Astron. Astrophys. 2020, 644, A159. [Google Scholar] [CrossRef]
- Wright, E.L. A Cosmology Calculator for the World Wide Web. Publ. Astron. Soc. Pac. 2006, 118, 1711–1715. [Google Scholar] [CrossRef]
- Walker, R.C. What the VLBA Can Do For You. In Very Long Baseline Interferometry and the VLBA; Zensus, J.A., Diamond, P.J., Napier, P.J., Eds.; Astronomical Society of the Pacific Conference Series; Astronomical Society of the Pacific: San Francisco, CA, USA, 1995; Volume 82, p. 133. [Google Scholar]
- Beasley, A.J.; Gordon, D.; Peck, A.B.; Petrov, L.; MacMillan, D.S.; Fomalont, E.B.; Ma, C. The VLBA Calibrator Survey-VCS1. Astrophys. J. Suppl. Ser. 2002, 141, 13–21. [Google Scholar] [CrossRef]
- Gordon, D.; Jacobs, C.; Beasley, A.; Peck, A.; Gaume, R.; Charlot, P.; Fey, A.; Ma, C.; Titov, O.; Boboltz, D. Second Epoch VLBA Calibrator Survey Observations: VCS-II. Astron. J. 2016, 151, 154. [Google Scholar] [CrossRef]
- Shepherd, M.C. Difmap: An Interactive Program for Synthesis Imaging. In Astronomical Data Analysis Software and Systems VI; Hunt, G., Payne, H., Eds.; Astronomical Society of the Pacific Conference Series; Astronomical Society of the Pacific: San Francisco, CA, USA, 1997; Volume 125, p. 77. [Google Scholar]
- Högbom, J.A. Aperture Synthesis with a Non-Regular Distribution of Interferometer Baselines. Astron. Astrophys. Suppl. 1974, 15, 417. [Google Scholar]
- Pearson, T.J. Non-Imaging Data Analysis. In Very Long Baseline Interferometry and the VLBA; Zensus, J.A., Diamond, P.J., Napier, P.J., Eds.; Astronomical Society of the Pacific Conference Series; Astronomical Society of the Pacific: San Francisco, CA, USA, 1995; Volume 82, p. 267. [Google Scholar]
- Kovalev, Y.Y.; Kellermann, K.I.; Lister, M.L.; Homan, D.C.; Vermeulen, R.C.; Cohen, M.H.; Ros, E.; Kadler, M.; Lobanov, A.P.; Zensus, J.A.; et al. Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine-Scale Structure. Astron. J. 2005, 130, 2473–2505. [Google Scholar] [CrossRef]
- Lee, S.S.; Lobanov, A.P.; Krichbaum, T.P.; Witzel, A.; Zensus, A.; Bremer, M.; Greve, A.; Grewing, M. A Global 86 GHz VLBI Survey of Compact Radio Sources. Astron. J. 2008, 136, 159–180. [Google Scholar] [CrossRef]
- Punsly, B.; Frey, S.; Reynolds, C.; Marziani, P.; Pushkarev, A.; Chen, S.; Li, S.; Kharb, P. The Highly Self-absorbed Blazar PKS 1351-018. Astron. J. 2021, 919, 40. [Google Scholar] [CrossRef]
- Kun, E.; Gabányi, K.É.; Karouzos, M.; Britzen, S.; Gergely, L.Á. A spinning supermassive black hole binary model consistent with VLBI observations of the S5 1928+738 jet. Mon. Not. R. Astron. Soc. 2014, 445, 1370–1382. [Google Scholar] [CrossRef]
- An, T.; Baan, W.A. The Dynamic Evolution of Young Extragalactic Radio Sources. Astron. J. 2012, 760, 77. [Google Scholar] [CrossRef]
- Condon, J.J.; Condon, M.A.; Gisler, G.; Puschell, J.J. Strong radio sources in bright spiral galaxies. II. Rapid star formation and galaxy-galaxy interactions. Astron. J. 1982, 252, 102–124. [Google Scholar] [CrossRef]
- Readhead, A.C.S. Equipartition Brightness Temperature and the Inverse Compton Catastrophe. Astron. J. 1994, 426, 51. [Google Scholar] [CrossRef]
- Homan, D.C.; Cohen, M.H.; Hovatta, T.; Kellermann, K.I.; Kovalev, Y.Y.; Lister, M.L.; Popkov, A.V.; Pushkarev, A.B.; Ros, E.; Savolainen, T. MOJAVE. XIX. Brightness Temperatures and Intrinsic Properties of Blazar Jets. Astron. J. 2021, 923, 67. [Google Scholar] [CrossRef]
- Homan, D.C.; Kovalev, Y.Y.; Lister, M.L.; Ros, E.; Kellermann, K.I.; Cohen, M.H.; Vermeulen, R.C.; Zensus, J.A.; Kadler, M. Intrinsic Brightness Temperatures of AGN Jets. Astrophys. J. Lett. 2006, 642, L115–L118. [Google Scholar] [CrossRef]
- Lister, M.L.; Homan, D.C.; Hovatta, T.; Kellermann, K.I.; Kiehlmann, S.; Kovalev, Y.Y.; Max-Moerbeck, W.; Pushkarev, A.B.; Readhead, A.C.S.; Ros, E.; et al. MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-loud Blazars. Astron. J. 2019, 874, 43. [Google Scholar] [CrossRef]
- Richards, J.L.; Max-Moerbeck, W.; Pavlidou, V.; King, O.G.; Pearson, T.J.; Readhead, A.C.S.; Reeves, R.; Shepherd, M.C.; Stevenson, M.A.; Weintraub, L.C.; et al. Blazars in the Fermi Era: The OVRO 40 m Telescope Monitoring Program. Astrophys. J. Suppl. Ser. 2011, 194, 29. [Google Scholar] [CrossRef]
- Liodakis, I.; Hovatta, T.; Huppenkothen, D.; Kiehlmann, S.; Max-Moerbeck, W.; Readhead, A.C.S. Constraining the Limiting Brightness Temperature and Doppler Factors for the Largest Sample of Radio-bright Blazars. Astron. J. 2018, 866, 137. [Google Scholar] [CrossRef]
- Orienti, M.; D’Ammando, F.; Larsson, J.; Finke, J.; Giroletti, M.; Dallacasa, D.; Isacsson, T.; Stoby Hoglund, J. Investigating powerful jets in radio-loud narrow-line Seyfert 1s. Mon. Not. R. Astron. Soc. 2015, 453, 4037–4050. [Google Scholar] [CrossRef]
- Yao, S.; Komossa, S.; Liu, W.J.; Yi, W.; Yuan, W.; Zhou, H.; Wu, X.B. SDSS J094635.06+101706.1: A redshift one, very radio-loud, γ-ray emitting narrow-line Seyfert 1 galaxy. Mon. Not. R. Astron. Soc. 2019, 487, L40–L45. [Google Scholar] [CrossRef]
- Shao, X.; Gu, M.; Chen, Y.; Yang, H.; Yao, S.; Yuan, W.; Shen, Z. The Radio Structure of the γ-Ray Narrow-line Seyfert 1 Galaxy SDSS J211852.96-073227.5. Astron. J. 2023, 943, 136. [Google Scholar] [CrossRef]
- Xiao, H.; Fan, J.; Rando, R.; Zhu, J.; Hu, L. Further evidence of superluminal active galactic nuclei as γ-ray sources. Astron. Nachrichten 2020, 341, 462–470. [Google Scholar] [CrossRef]
- Xiao, H.; Ouyang, Z.; Zhang, L.; Fu, L.; Zhang, S.; Zeng, X.; Fan, J. The Relativistic Jet and Central Engine of Fermi Blazars. Astron. J. 2022, 925, 40. [Google Scholar] [CrossRef]
- Zhang, L.; Chen, S.; Xiao, H.; Cai, J.; Fan, J. Doppler Factor Estimation for Fermi Blazars. Astron. J. 2020, 897, 10. [Google Scholar] [CrossRef]
- Chen, L. On the Jet Properties of γ-Ray-loud Active Galactic Nuclei. Astrophys. J. Suppl. Ser. 2018, 235, 39. [Google Scholar] [CrossRef]
- Chen, Y.; Gu, Q.; Fan, J.; Yu, X.; Zhong, X.; Liu, H.; Ding, N.; Xiong, D.; Guo, X. General Physical Properties of Fermi Blazars. Astrophys. J. Suppl. Ser. 2023, 268, 6. [Google Scholar] [CrossRef]
- Liodakis, I.; Zezas, A.; Angelakis, E.; Hovatta, T.; Pavlidou, V. Reconciling inverse-Compton Doppler factors with variability Doppler factors in blazar jets. Astron. Astrophys. 2017, 602, A104. [Google Scholar] [CrossRef]
- Lähteenmäki, A.; Valtaoja, E. Total Flux Density Variations in Extragalactic Radio Sources. III. Doppler Boosting Factors, Lorentz Factors, and Viewing Angles for Active Galactic Nuclei. Astron. J. 1999, 521, 493–501. [Google Scholar] [CrossRef]
- Zhang, Z.; Gupta, A.C.; Gaur, H.; Wiita, P.J.; An, T.; Lu, Y.; Fan, S.; Xu, H. X-Ray Intraday Variability of the TeV Blazar PKS 2155-304 with Suzaku during 2005–2014. Astron. J. 2021, 909, 103. [Google Scholar] [CrossRef]
- Prandini, E.; Ghisellini, G. The Blazar Sequence and Its Physical Understanding. Galaxies 2022, 10, 35. [Google Scholar] [CrossRef]
- Xie, Z.L.; Banados, E.; Belladitta, S.; Mazzucchelli, C.; Schindler, J.T.; Davies, F.B.; Venemans, B.P. Recognizing Blazars Using Radio Morphology from the VLA Sky Survey. arXiv 2024, arXiv:2401.04009. [Google Scholar] [CrossRef]
- Sbarrato, T.; Ghisellini, G.; Tagliaferri, G.; Foschini, L.; Nardini, M.; Tavecchio, F.; Gehrels, N. Blazar candidates beyond redshift 4 observed by Swift. Mon. Not. R. Astron. Soc. 2015, 446, 2483–2489. [Google Scholar] [CrossRef]
- Sbarrato, T. Big and Young Supermassive Black Holes in the Early Universe. Galaxies 2021, 9, 23. [Google Scholar] [CrossRef]
- Massaro, E.; Giommi, P.; Leto, C.; Marchegiani, P.; Maselli, A.; Perri, M.; Piranomonte, S.; Sclavi, S. Roma-BZCAT: A multifrequency catalogue of blazars. Astron. Astrophys. 2009, 495, 691–696. [Google Scholar] [CrossRef]
- Massaro, E.; Maselli, A.; Leto, C.; Marchegiani, P.; Perri, M.; Giommi, P.; Piranomonte, S. The 5th edition of the Roma-BZCAT. A short presentation. Astrophys. Space Sci. 2015, 357, 75. [Google Scholar] [CrossRef]
- Cao, H.M.; Frey, S.; Gabányi, K.É.; Paragi, Z.; Yang, J.; Cseh, D.; Hong, X.Y.; An, T. VLBI observations of four radio quasars at z > 4: Blazars or not? Mon. Not. R. Astron. Soc. 2017, 467, 950–960. [Google Scholar] [CrossRef]
- Massaro, F.; Marchesini, E.J.; D’Abrusco, R.; Masetti, N.; Andruchow, I.; Smith, H.A. Radio-weak BL Lac Objects in the Fermi Era. Astron. J. 2017, 834, 113. [Google Scholar] [CrossRef]
- Bruni, G.; Panessa, F.; Ghisellini, G.; Chavushyan, V.; Peña-Herazo, H.A.; Hernández-García, L.; Bazzano, A.; Ubertini, P.; Kraus, A. Fermi Transient J1544-0649: A Flaring Radio-weak BL Lac. Astrophys. J. Lett. 2018, 854, L23. [Google Scholar] [CrossRef]
- Cao, H.M.; Frey, S.; Gabányi, K.É.; Yang, J.; Cui, L.; Hong, X.Y.; An, T. The loud and the quiet: Searching for radio counterparts of two radio-weak BL Lac candidates with VLBI. Mon. Not. R. Astron. Soc. 2019, 482, L34–L39. [Google Scholar] [CrossRef]
- Foschini, L.; Berton, M.; Caccianiga, A.; Ciroi, S.; Cracco, V.; Peterson, B.M.; Angelakis, E.; Braito, V.; Fuhrmann, L.; Gallo, L.; et al. Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies. Astron. Astrophys. 2015, 575, A13. [Google Scholar] [CrossRef]
- Chen, Y.; Gu, Q. The black hole mass, jet power and accretion in blazars and flat-spectrum radio-loud narrow-line Seyfert 1 galaxies. Astrophys. Space Sci. 2019, 364, 123. [Google Scholar] [CrossRef]
- Chen, Y.; Gu, Q.; Fan, J.; Yu, X.; Ding, N.; Guo, X.; Xiong, D. The jet formation mechanism of gamma-ray narrow-line Seyfert 1 galaxies. Mon. Not. R. Astron. Soc. 2022, 517, 1381–1388. [Google Scholar] [CrossRef]
- Tchekhovskoy, A.; Narayan, R.; McKinney, J.C. Black Hole Spin and The Radio Loud/Quiet Dichotomy of Active Galactic Nuclei. Astron. J. 2010, 711, 50–63. [Google Scholar] [CrossRef]
- Elvis, M.; Risaliti, G.; Zamorani, G. Most Supermassive Black Holes Must Be Rapidly Rotating. Astrophys. J. Lett. 2002, 565, L75–L77. [Google Scholar] [CrossRef]
- Blandford, R.; Meier, D.; Readhead, A. Relativistic Jets from Active Galactic Nuclei. Annu. Rev. Astron. Astrophys. 2019, 57, 467–509. [Google Scholar] [CrossRef]
Epoch (yr) | (GHz) | t (s) | IF × BW (MHz) | Project |
---|---|---|---|---|
1994.609 | 8.34 | 217 | BB023 [37] | |
2011.808 | 8.36 | 1765 | BC196 | |
2014.593 | 8.67 | 109 | BG219 [38] | |
2017.613 | 8.67 | 160 | UF001 | |
2018.762 | 8.66 | 434 | BP222 | |
2018.839 | 8.66 | 165 | UG002 |
Epoch (yr) | Comp. | S (mJy) | R (mas) | (°) | d (mas) | Tb ( K) |
---|---|---|---|---|---|---|
1994.609 | C | 228 ± 23 | ⋯ | ⋯ | 6.5 ± 0.4 | |
J1 | 30 ± 3 | 1.56 ± 0.03 | 131 | ⋯ | ||
2011.808 | C | 233 ± 23 | ⋯ | ⋯ | 10.0 ± 0.4 | |
J2 | 43 ± 4 | 0.49 ± 0.04 | 150 | ⋯ | ||
2014.593 | C | 119 ± 12 | ⋯ | ⋯ | 3.4 ± 0.2 | |
J2 | 20 ± 2 | 0.73 ± 0.04 | 163 | ⋯ | ||
2017.613 | C | 307 ± 31 | ⋯ | ⋯ | 56 ± 2 | |
J2 | 19 ± 2 | 0.83 ± 0.03 | 157 | ⋯ | ||
2018.762 | C | 167 ± 17 | ⋯ | ⋯ | 17.5 ± 0.6 | |
J2 | 18 ± 2 | 0.90 ± 0.03 | 155 | ⋯ | ||
2018.839 | C | 181 ± 18 | ⋯ | ⋯ | 8.3 ± 0.4 | |
J2 | 19 ± 2 | 0.91 ± 0.03 | 148 | ⋯ |
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Kozák, B.; Frey, S.; Gabányi, K.É. Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549. Galaxies 2024, 12, 8. https://doi.org/10.3390/galaxies12010008
Kozák B, Frey S, Gabányi KÉ. Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549. Galaxies. 2024; 12(1):8. https://doi.org/10.3390/galaxies12010008
Chicago/Turabian StyleKozák, Bettina, Sándor Frey, and Krisztina Éva Gabányi. 2024. "Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549" Galaxies 12, no. 1: 8. https://doi.org/10.3390/galaxies12010008
APA StyleKozák, B., Frey, S., & Gabányi, K. É. (2024). Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549. Galaxies, 12(1), 8. https://doi.org/10.3390/galaxies12010008