Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
Indexado |
|
||||
DOI | 10.1051/0004-6361/201630257 | ||||
Año | 2017 | ||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Observations performed at Metsahovi Radio Observatory at 37 GHz are presented for a sample of 78 radio-loud and radio-quiet narrow-line Seyfert 1 (NLS1) galaxies, together with additional lower and higher frequency radio data from RATAN-600, Owens Valley Radio Observatory, and the Planck satellite. Most of the data have been gathered between February 2012 and April 2015 but for some sources even longer light curves exist. The detection rate at 37 GHz is around 19%, which is comparable to other populations of active galactic nuclei presumed to be faint at radio frequencies, such as BL Lac objects. Variability and spectral indices are determined for sources with enough detections. Based on the radio data, many NLS1 galaxies show a blazar-like radio spectra exhibiting significant variability. The spectra at a given time are often inverted or convex. The source of the high-frequency radio emission in NLS1 galaxies, detected at 37 GHz, is most probably a relativistic jet rather than star formation. Jets in NLS1 galaxies are therefore expected to be a much more common phenomenon than earlier assumed.
Ord. | Autor | Género | Institución - País |
---|---|---|---|
1 | Lahteenmaki, A. | Mujer |
Aalto Univ - Finlandia
Aalto University - Finlandia |
2 | Jarvela, E. | Mujer |
Aalto Univ - Finlandia
Aalto University - Finlandia |
3 | Hovatta, T. | Mujer |
Aalto Univ - Finlandia
Aalto University - Finlandia |
4 | Tornikoski, M. | Mujer |
Aalto Univ - Finlandia
Aalto University - Finlandia |
5 | Harrison, D. | - |
UNIV CAMBRIDGE - Reino Unido
Kavli Inst Cosmol Cambridge - Reino Unido Institute of Astronomy - Reino Unido Kavli Institute for Cosmology Cambridge - Reino Unido University of Cambridge - Reino Unido |
6 | Lopez-Caniego, M. | - |
ESAC - España
European Space Astronomy Centre - España |
7 | Max-Moerbeck, Walter | Hombre |
Max Planck Inst Radioastron - Alemania
Max Planck Institute for Radio Astronomy - Alemania Centro de Excelencia en Astrofísica y Tecnologías Afines - Chile |
8 | Mingaliev, M. | - |
Russian Acad Sci - Rusia
Kazan Fed Univ - Rusia Special Astrophysical Observatory, Russian Academy of Sciences - Rusia Kazan Federal University - Rusia |
9 | Pearson, T. J. | Hombre |
CALTECH - Estados Unidos
California Institute of Technology - Estados Unidos |
10 | Ramakrishnan, Venkatessh | - |
Aalto Univ - Finlandia
Aalto University - Finlandia |
11 | Readhead, Anthony C. S. S. | Hombre |
CALTECH - Estados Unidos
California Institute of Technology - Estados Unidos |
12 | Reeves, Rodrigo | Hombre |
Universidad de Concepción - Chile
Centro de Excelencia en Astrofísica y Tecnologías Afines - Chile |
13 | Richards, J. L. | Hombre |
CALTECH - Estados Unidos
California Institute of Technology - Estados Unidos |
14 | Sotnikova, Y. | - |
Kazan Fed Univ - Rusia
Kazan Federal University - Rusia |
15 | Tammi, J. | Mujer |
Aalto Univ - Finlandia
Aalto University - Finlandia |
Fuente |
---|
National Science Foundation |
NSF |
NASA |
National Aeronautics and Space Administration |
Russian Government Program of Competitive Growth of Kazan Federal University |
Academy of Finland |
ESA |
Ecological Society of America |
NASA/IPAC |
Kazan Federal University |
Agradecimiento |
---|
The OVRO 40 m monitoring programme is supported in part by NASA grants NNX08AW31G, NNX11A043G and NNX14AQ89G, and NSF grants AST-0808050 and AST-1109911. T.H. was supported by the Academy of Finland project number 267324. MGM acknowledges support through the Russian Government Program of Competitive Growth of Kazan Federal University. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Based on observations obtained with Planck (http://www.esa.int/Planck), an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada. |
The OVRO 40 m monitoring programme is supported in part by NASA grants NNX08AW31G, NNX11A043G and NNX14AQ89G, and NSF grants AST-0808050 and AST-1109911. T.H. was supported by the Academy of Finland project number 267324. MGM acknowledges support through the Russian Government Program of Competitive Growth of Kazan Federal University. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Based on observations obtained with Planck (http://www.esa.int/Planck), an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada. |