Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift
- Autores
- Abramowski, A.; Acero, F.; Akhperjanian, A. G.; Anton, G.; Balenderan, S.; Medina, Maria Clementina; Terrier, R.; Tluczykont, M.; Trichard, C.; Valerius, K.; van Eldik, C.; Vasileiadis, G.; Venter, C; Viana, A.; Vincent, P.; Völk, H. J.; Volpe, F.; Vorobiov, S.; Vorster, M.; Wagner, S. J.; Ward, M.; White, R.; Wierzcholska, A.; Wouters, D.; Zacharias, M.; Zajczyk, A.; Zdziarski, A. A.; Zech, A.; Zechlin, H. S.; Pelat, D.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE are also available. The spectrum and light curve measured with H.E.S.S. are presented and compared to the multi-wavelength data at lower energies. A rapid flare is seen in the Swift XRT and RXTE data, together with a flux variation in the UV band, at a time scale of the order of one day. A firm upper limit of z < 0.59 on the redshift of PKS 0447−439 is derived from the combined Fermi-LAT and H.E.S.S. data, given the assumptions that there is no upturn in the intrinsic spectrum above the Fermi-LAT energy range and that absorption on the extragalactic background light (EBL) is not weaker than the lower limit provided by current models. The spectral energy distribution is well described by a simple one-zone synchrotron self-Compton scenario, if the redshift of the source is less than z ≲ 0.4.
Fil: Abramowski, A.. Universität Hamburg; Alemania
Fil: Acero, F.. Universite Montpellier II; Francia
Fil: Akhperjanian, A. G.. Yerevan Physics Institute; Armenia
Fil: Anton, G.. Universität Erlangen Nürnberg; Alemania
Fil: Balenderan, S.. University Of Durham; Reino Unido
Fil: Medina, Maria Clementina. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina. CEA Saclay; Francia
Fil: Terrier, R.. Université Paris Diderot - Paris 7; Francia
Fil: Tluczykont, M.. Universitat Hamburg; Alemania
Fil: Trichard, C.. Université de Savoie; Francia
Fil: Valerius, K.. Universität Erlangen Nürnberg; Alemania
Fil: van Eldik, C.. Max-Planck Institut für Kernphysik; Alemania
Fil: Vasileiadis, G.. Universite Montpellier II; Francia
Fil: Venter, C. North West University; Sudáfrica
Fil: Viana, A.. Max Planck Institut für Kernphysik; Alemania
Fil: Vincent, P.. Université Paris Diderot - Paris 7; Francia
Fil: Völk, H. J.. Max Planck Institut für Kernphysik; Alemania
Fil: Volpe, F.. Max Planck Institut für Kernphysik; Alemania
Fil: Vorobiov, S.. Universite Montpellier II; Francia
Fil: Vorster, M.. North West University; Sudáfrica
Fil: Wagner, S. J.. Universität Heidelberg; Alemania
Fil: Ward, M.. University Of Durham; Reino Unido
Fil: White, R.. University of Leicester; Reino Unido
Fil: Wierzcholska, A.. Uniwersytet Jagiellonski; Polonia
Fil: Wouters, D.. CEA Saclay; Francia
Fil: Zacharias, M.. Institut für Theoretische Physik; Alemania
Fil: Zajczyk, A.. Universite Montpellier II; Francia
Fil: Zdziarski, A. A.. Nicolaus Copernicus Astronomical Center; Polonia
Fil: Zech, A.. Université Paris Diderot - Paris 7; Francia
Fil: Zechlin, H. S.. Universitat Hamburg; Alemania
Fil: Pelat, D.. Université Paris Diderot - Paris 7; Francia - Materia
-
Active galaxies
BL Lacertae objects
Radiation mechanisms
Gamma ray galaxies
Non thermal mechanisms - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/18684
Ver los metadatos del registro completo
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Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshiftAbramowski, A.Acero, F.Akhperjanian, A. G.Anton, G.Balenderan, S.Medina, Maria ClementinaTerrier, R.Tluczykont, M.Trichard, C.Valerius, K.van Eldik, C.Vasileiadis, G.Venter, CViana, A.Vincent, P.Völk, H. J.Volpe, F.Vorobiov, S.Vorster, M.Wagner, S. J.Ward, M.White, R.Wierzcholska, A.Wouters, D.Zacharias, M.Zajczyk, A.Zdziarski, A. A.Zech, A.Zechlin, H. S.Pelat, D.Active galaxiesBL Lacertae objectsRadiation mechanismsGamma ray galaxiesNon thermal mechanismshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE are also available. The spectrum and light curve measured with H.E.S.S. are presented and compared to the multi-wavelength data at lower energies. A rapid flare is seen in the Swift XRT and RXTE data, together with a flux variation in the UV band, at a time scale of the order of one day. A firm upper limit of z < 0.59 on the redshift of PKS 0447−439 is derived from the combined Fermi-LAT and H.E.S.S. data, given the assumptions that there is no upturn in the intrinsic spectrum above the Fermi-LAT energy range and that absorption on the extragalactic background light (EBL) is not weaker than the lower limit provided by current models. The spectral energy distribution is well described by a simple one-zone synchrotron self-Compton scenario, if the redshift of the source is less than z ≲ 0.4.Fil: Abramowski, A.. Universität Hamburg; AlemaniaFil: Acero, F.. Universite Montpellier II; FranciaFil: Akhperjanian, A. G.. Yerevan Physics Institute; ArmeniaFil: Anton, G.. Universität Erlangen Nürnberg; AlemaniaFil: Balenderan, S.. University Of Durham; Reino UnidoFil: Medina, Maria Clementina. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina. CEA Saclay; FranciaFil: Terrier, R.. Université Paris Diderot - Paris 7; FranciaFil: Tluczykont, M.. Universitat Hamburg; AlemaniaFil: Trichard, C.. Université de Savoie; FranciaFil: Valerius, K.. Universität Erlangen Nürnberg; AlemaniaFil: van Eldik, C.. Max-Planck Institut für Kernphysik; AlemaniaFil: Vasileiadis, G.. Universite Montpellier II; FranciaFil: Venter, C. North West University; SudáfricaFil: Viana, A.. Max Planck Institut für Kernphysik; AlemaniaFil: Vincent, P.. Université Paris Diderot - Paris 7; FranciaFil: Völk, H. J.. Max Planck Institut für Kernphysik; AlemaniaFil: Volpe, F.. Max Planck Institut für Kernphysik; AlemaniaFil: Vorobiov, S.. Universite Montpellier II; FranciaFil: Vorster, M.. North West University; SudáfricaFil: Wagner, S. J.. Universität Heidelberg; AlemaniaFil: Ward, M.. University Of Durham; Reino UnidoFil: White, R.. University of Leicester; Reino UnidoFil: Wierzcholska, A.. Uniwersytet Jagiellonski; PoloniaFil: Wouters, D.. CEA Saclay; FranciaFil: Zacharias, M.. Institut für Theoretische Physik; AlemaniaFil: Zajczyk, A.. Universite Montpellier II; FranciaFil: Zdziarski, A. A.. Nicolaus Copernicus Astronomical Center; PoloniaFil: Zech, A.. Université Paris Diderot - Paris 7; FranciaFil: Zechlin, H. S.. Universitat Hamburg; AlemaniaFil: Pelat, D.. Université Paris Diderot - Paris 7; FranciaEdp Sciences S A2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18684Abramowski, A.; Acero, F.; Akhperjanian, A. G.; Anton, G.; Balenderan, S.; et al.; Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift; Edp Sciences S A; Astronomy And Astrophysics; 552; 4-2013; 118-1320004-6361enginfo:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2013A%26A...552A.118Hinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201321108info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/04/aa21108-13/aa21108-13.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:16:18Zoai:ri.conicet.gov.ar:11336/18684instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:16:18.275CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| title |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| spellingShingle |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift Abramowski, A. Active galaxies BL Lacertae objects Radiation mechanisms Gamma ray galaxies Non thermal mechanisms |
| title_short |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| title_full |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| title_fullStr |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| title_full_unstemmed |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| title_sort |
Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift |
| dc.creator.none.fl_str_mv |
Abramowski, A. Acero, F. Akhperjanian, A. G. Anton, G. Balenderan, S. Medina, Maria Clementina Terrier, R. Tluczykont, M. Trichard, C. Valerius, K. van Eldik, C. Vasileiadis, G. Venter, C Viana, A. Vincent, P. Völk, H. J. Volpe, F. Vorobiov, S. Vorster, M. Wagner, S. J. Ward, M. White, R. Wierzcholska, A. Wouters, D. Zacharias, M. Zajczyk, A. Zdziarski, A. A. Zech, A. Zechlin, H. S. Pelat, D. |
| author |
Abramowski, A. |
| author_facet |
Abramowski, A. Acero, F. Akhperjanian, A. G. Anton, G. Balenderan, S. Medina, Maria Clementina Terrier, R. Tluczykont, M. Trichard, C. Valerius, K. van Eldik, C. Vasileiadis, G. Venter, C Viana, A. Vincent, P. Völk, H. J. Volpe, F. Vorobiov, S. Vorster, M. Wagner, S. J. Ward, M. White, R. Wierzcholska, A. Wouters, D. Zacharias, M. Zajczyk, A. Zdziarski, A. A. Zech, A. Zechlin, H. S. Pelat, D. |
| author_role |
author |
| author2 |
Acero, F. Akhperjanian, A. G. Anton, G. Balenderan, S. Medina, Maria Clementina Terrier, R. Tluczykont, M. Trichard, C. Valerius, K. van Eldik, C. Vasileiadis, G. Venter, C Viana, A. Vincent, P. Völk, H. J. Volpe, F. Vorobiov, S. Vorster, M. Wagner, S. J. Ward, M. White, R. Wierzcholska, A. Wouters, D. Zacharias, M. Zajczyk, A. Zdziarski, A. A. Zech, A. Zechlin, H. S. Pelat, D. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Active galaxies BL Lacertae objects Radiation mechanisms Gamma ray galaxies Non thermal mechanisms |
| topic |
Active galaxies BL Lacertae objects Radiation mechanisms Gamma ray galaxies Non thermal mechanisms |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE are also available. The spectrum and light curve measured with H.E.S.S. are presented and compared to the multi-wavelength data at lower energies. A rapid flare is seen in the Swift XRT and RXTE data, together with a flux variation in the UV band, at a time scale of the order of one day. A firm upper limit of z < 0.59 on the redshift of PKS 0447−439 is derived from the combined Fermi-LAT and H.E.S.S. data, given the assumptions that there is no upturn in the intrinsic spectrum above the Fermi-LAT energy range and that absorption on the extragalactic background light (EBL) is not weaker than the lower limit provided by current models. The spectral energy distribution is well described by a simple one-zone synchrotron self-Compton scenario, if the redshift of the source is less than z ≲ 0.4. Fil: Abramowski, A.. Universität Hamburg; Alemania Fil: Acero, F.. Universite Montpellier II; Francia Fil: Akhperjanian, A. G.. Yerevan Physics Institute; Armenia Fil: Anton, G.. Universität Erlangen Nürnberg; Alemania Fil: Balenderan, S.. University Of Durham; Reino Unido Fil: Medina, Maria Clementina. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina. CEA Saclay; Francia Fil: Terrier, R.. Université Paris Diderot - Paris 7; Francia Fil: Tluczykont, M.. Universitat Hamburg; Alemania Fil: Trichard, C.. Université de Savoie; Francia Fil: Valerius, K.. Universität Erlangen Nürnberg; Alemania Fil: van Eldik, C.. Max-Planck Institut für Kernphysik; Alemania Fil: Vasileiadis, G.. Universite Montpellier II; Francia Fil: Venter, C. North West University; Sudáfrica Fil: Viana, A.. Max Planck Institut für Kernphysik; Alemania Fil: Vincent, P.. Université Paris Diderot - Paris 7; Francia Fil: Völk, H. J.. Max Planck Institut für Kernphysik; Alemania Fil: Volpe, F.. Max Planck Institut für Kernphysik; Alemania Fil: Vorobiov, S.. Universite Montpellier II; Francia Fil: Vorster, M.. North West University; Sudáfrica Fil: Wagner, S. J.. Universität Heidelberg; Alemania Fil: Ward, M.. University Of Durham; Reino Unido Fil: White, R.. University of Leicester; Reino Unido Fil: Wierzcholska, A.. Uniwersytet Jagiellonski; Polonia Fil: Wouters, D.. CEA Saclay; Francia Fil: Zacharias, M.. Institut für Theoretische Physik; Alemania Fil: Zajczyk, A.. Universite Montpellier II; Francia Fil: Zdziarski, A. A.. Nicolaus Copernicus Astronomical Center; Polonia Fil: Zech, A.. Université Paris Diderot - Paris 7; Francia Fil: Zechlin, H. S.. Universitat Hamburg; Alemania Fil: Pelat, D.. Université Paris Diderot - Paris 7; Francia |
| description |
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE are also available. The spectrum and light curve measured with H.E.S.S. are presented and compared to the multi-wavelength data at lower energies. A rapid flare is seen in the Swift XRT and RXTE data, together with a flux variation in the UV band, at a time scale of the order of one day. A firm upper limit of z < 0.59 on the redshift of PKS 0447−439 is derived from the combined Fermi-LAT and H.E.S.S. data, given the assumptions that there is no upturn in the intrinsic spectrum above the Fermi-LAT energy range and that absorption on the extragalactic background light (EBL) is not weaker than the lower limit provided by current models. The spectral energy distribution is well described by a simple one-zone synchrotron self-Compton scenario, if the redshift of the source is less than z ≲ 0.4. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013-04 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/18684 Abramowski, A.; Acero, F.; Akhperjanian, A. G.; Anton, G.; Balenderan, S.; et al.; Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift; Edp Sciences S A; Astronomy And Astrophysics; 552; 4-2013; 118-132 0004-6361 |
| url |
http://hdl.handle.net/11336/18684 |
| identifier_str_mv |
Abramowski, A.; Acero, F.; Akhperjanian, A. G.; Anton, G.; Balenderan, S.; et al.; Discovery of TeV γ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift; Edp Sciences S A; Astronomy And Astrophysics; 552; 4-2013; 118-132 0004-6361 |
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eng |
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eng |
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