AP Librae: The Extended Jet as the Source of VHE Emission?
The LBL AP Librae has been detected in the TeV gamma-ray range, which is unexpected for this kind of blazar. The broad-band SED cannot be explained by a one-zone model, and especially fails in the TeV domain. An extended jet has been detected on arcsec scales both in radio and X-ray frequencies. The...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-11-01
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| Series: | Galaxies |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2075-4434/4/4/63 |
| _version_ | 1828170913768538112 |
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| author | Michael Zacharias Stefan J. Wagner |
| author_facet | Michael Zacharias Stefan J. Wagner |
| author_sort | Michael Zacharias |
| collection | DOAJ |
| description | The LBL AP Librae has been detected in the TeV gamma-ray range, which is unexpected for this kind of blazar. The broad-band SED cannot be explained by a one-zone model, and especially fails in the TeV domain. An extended jet has been detected on arcsec scales both in radio and X-ray frequencies. The spectral index of the X-ray band indicates an inverse Compton origin. Using an IC/CMB model, the TeV emission can be successfully modeled as originating in the extended jet. Several arguments in favor of this model, as well as observational tests, will be presented. The observations suggest that acceleration of particles to very high energies is still efficient at large distances from the core. |
| first_indexed | 2024-04-12T03:19:06Z |
| format | Article |
| id | doaj.art-e7169a3666cc4fab85ab0fa01b0fd57c |
| institution | Directory Open Access Journal |
| issn | 2075-4434 |
| language | English |
| last_indexed | 2024-04-12T03:19:06Z |
| publishDate | 2016-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj.art-e7169a3666cc4fab85ab0fa01b0fd57c2022-12-22T03:49:59ZengMDPI AGGalaxies2075-44342016-11-01446310.3390/galaxies4040063galaxies4040063AP Librae: The Extended Jet as the Source of VHE Emission?Michael Zacharias0Stefan J. Wagner1Landessternwarte, Universität Heidelberg, D-69117 Heidelberg, GermanyLandessternwarte, Universität Heidelberg, D-69117 Heidelberg, GermanyThe LBL AP Librae has been detected in the TeV gamma-ray range, which is unexpected for this kind of blazar. The broad-band SED cannot be explained by a one-zone model, and especially fails in the TeV domain. An extended jet has been detected on arcsec scales both in radio and X-ray frequencies. The spectral index of the X-ray band indicates an inverse Compton origin. Using an IC/CMB model, the TeV emission can be successfully modeled as originating in the extended jet. Several arguments in favor of this model, as well as observational tests, will be presented. The observations suggest that acceleration of particles to very high energies is still efficient at large distances from the core.http://www.mdpi.com/2075-4434/4/4/63blazarsjetsrelativistic processesgamma rays |
| spellingShingle | Michael Zacharias Stefan J. Wagner AP Librae: The Extended Jet as the Source of VHE Emission? Galaxies blazars jets relativistic processes gamma rays |
| title | AP Librae: The Extended Jet as the Source of VHE Emission? |
| title_full | AP Librae: The Extended Jet as the Source of VHE Emission? |
| title_fullStr | AP Librae: The Extended Jet as the Source of VHE Emission? |
| title_full_unstemmed | AP Librae: The Extended Jet as the Source of VHE Emission? |
| title_short | AP Librae: The Extended Jet as the Source of VHE Emission? |
| title_sort | ap librae the extended jet as the source of vhe emission |
| topic | blazars jets relativistic processes gamma rays |
| url | http://www.mdpi.com/2075-4434/4/4/63 |
| work_keys_str_mv | AT michaelzacharias aplibraetheextendedjetasthesourceofvheemission AT stefanjwagner aplibraetheextendedjetasthesourceofvheemission |