Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
We report on a multiwavelength survey of a sample of 42 flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (RLNLS1s). This is the largest known sample of this type of active galactic nucleus (AGN) to date. We found that 17% of sources were detected at high-energy gamma rays (E > 100 MeV)...
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| Lenguaje: | Inglés |
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2015
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/168088 |
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I19-R120-10915-1680882024-07-24T20:01:41Z http://sedici.unlp.edu.ar/handle/10915/168088 Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies Foschini, Luigi Berton, Marco Caccianiga, Alessandro Ciroi, Stefano Cracco, Valentina Peterson, Bradley Angelakis, Emmanouil Braito, Valentina Fuhrmann, Lars Gallo, Luigi Grupe, Dirk Järvelä, Emilia Kaufmann, S. Komossa, Stefanie Kovalev, Yuri Lähteenmäki, Anne Lisakov, Mikhail Lister, Matthew Mathur, Smita Richards, Jennifer Romano, Paolo Sievers, Albrecht Tagliaferri, Gianpiero Tammi, Joni Tibolla, Omar Tornikoski, Merja Vercellone, Stefano La Mura, Giovanni Maraschi, Laura Rafanelli, Piero 2015-10 2016 2024-07-24T18:07:02Z en Ciencias Astronómicas multiwavelength survey Seyfert 1 galaxies We report on a multiwavelength survey of a sample of 42 flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (RLNLS1s). This is the largest known sample of this type of active galactic nucleus (AGN) to date. We found that 17% of sources were detected at high-energy gamma rays (E > 100 MeV), and 90% at X-rays (0:3 - 10 keV). The masses of the central black holes are in the range ∼ 10⁶⁻⁸M⊙ , smaller than the values of blazars. The disk luminosities are about 1 - 49% of the Eddington value, with one outlier at 0.3%, comparable with the luminosities observed in flat-spectrum radio quasars (FSRQs). The jet powers are ∼ 10⁴²⁻⁴⁶ erg s⁻¹, comparable with BL Lac Objects, yet relatively smaller than FSRQs. However, once renormalized by the mass of the central black hole, the jet powers of RLNLS1s, BL Lacs, and FSRQs are consistent each other, indicating the scalability of the jets. We found episodes of extreme variability at high energies on time scales of hours. In some cases, dramatic spectral and flux changes are interpreted as the interplay between the relativistic jet and the accretion disk. We conclude that, despite the distinct observational properties, the central engines of RLNLS1s are similar to those of blazars. Facultad de Ciencias Astronómicas y Geofísicas Objeto de conferencia Objeto de conferencia http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 141-144 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas multiwavelength survey Seyfert 1 galaxies |
| spellingShingle |
Ciencias Astronómicas multiwavelength survey Seyfert 1 galaxies Foschini, Luigi Berton, Marco Caccianiga, Alessandro Ciroi, Stefano Cracco, Valentina Peterson, Bradley Angelakis, Emmanouil Braito, Valentina Fuhrmann, Lars Gallo, Luigi Grupe, Dirk Järvelä, Emilia Kaufmann, S. Komossa, Stefanie Kovalev, Yuri Lähteenmäki, Anne Lisakov, Mikhail Lister, Matthew Mathur, Smita Richards, Jennifer Romano, Paolo Sievers, Albrecht Tagliaferri, Gianpiero Tammi, Joni Tibolla, Omar Tornikoski, Merja Vercellone, Stefano La Mura, Giovanni Maraschi, Laura Rafanelli, Piero Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| topic_facet |
Ciencias Astronómicas multiwavelength survey Seyfert 1 galaxies |
| description |
We report on a multiwavelength survey of a sample of 42 flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (RLNLS1s). This is the largest known sample of this type of active galactic nucleus (AGN) to date. We found that 17% of sources were detected at high-energy gamma rays (E > 100 MeV), and 90% at X-rays (0:3 - 10 keV). The masses of the central black holes are in the range ∼ 10⁶⁻⁸M⊙ , smaller than the values of blazars. The disk luminosities are about 1 - 49% of the Eddington value, with one outlier at 0.3%, comparable with the luminosities observed in flat-spectrum radio quasars (FSRQs). The jet powers are ∼ 10⁴²⁻⁴⁶ erg s⁻¹, comparable with BL Lac Objects, yet relatively smaller than FSRQs. However, once renormalized by the mass of the central black hole, the jet powers of RLNLS1s, BL Lacs, and FSRQs are consistent each other, indicating the scalability of the jets. We found episodes of extreme variability at high energies on time scales of hours.
In some cases, dramatic spectral and flux changes are interpreted as the interplay between the relativistic jet and the accretion disk. We conclude that, despite the distinct observational properties, the central engines of RLNLS1s are similar to those of blazars. |
| format |
Objeto de conferencia Objeto de conferencia |
| author |
Foschini, Luigi Berton, Marco Caccianiga, Alessandro Ciroi, Stefano Cracco, Valentina Peterson, Bradley Angelakis, Emmanouil Braito, Valentina Fuhrmann, Lars Gallo, Luigi Grupe, Dirk Järvelä, Emilia Kaufmann, S. Komossa, Stefanie Kovalev, Yuri Lähteenmäki, Anne Lisakov, Mikhail Lister, Matthew Mathur, Smita Richards, Jennifer Romano, Paolo Sievers, Albrecht Tagliaferri, Gianpiero Tammi, Joni Tibolla, Omar Tornikoski, Merja Vercellone, Stefano La Mura, Giovanni Maraschi, Laura Rafanelli, Piero |
| author_facet |
Foschini, Luigi Berton, Marco Caccianiga, Alessandro Ciroi, Stefano Cracco, Valentina Peterson, Bradley Angelakis, Emmanouil Braito, Valentina Fuhrmann, Lars Gallo, Luigi Grupe, Dirk Järvelä, Emilia Kaufmann, S. Komossa, Stefanie Kovalev, Yuri Lähteenmäki, Anne Lisakov, Mikhail Lister, Matthew Mathur, Smita Richards, Jennifer Romano, Paolo Sievers, Albrecht Tagliaferri, Gianpiero Tammi, Joni Tibolla, Omar Tornikoski, Merja Vercellone, Stefano La Mura, Giovanni Maraschi, Laura Rafanelli, Piero |
| author_sort |
Foschini, Luigi |
| title |
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| title_short |
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| title_full |
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| title_fullStr |
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| title_full_unstemmed |
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies |
| title_sort |
multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line seyfert 1 galaxies |
| publishDate |
2015 |
| url |
http://sedici.unlp.edu.ar/handle/10915/168088 |
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