The Astrophysical Journal Letters (Jan 2023)
The Vanishing of the Primary Emission Region in PKS 1510–089
- F. Aharonian,
- F. Ait Benkhali,
- J. Aschersleben,
- H. Ashkar,
- M. Backes,
- V. Barbosa Martins,
- J. Barnard,
- R. Batzofin,
- Y. Becherini,
- D. Berge,
- K. Bernlöhr,
- B. Bi,
- M. de Bony de Lavergne,
- M. Böttcher,
- C. Boisson,
- J. Bolmont,
- J. Borowska,
- M. Bouyahiaoui,
- F. Bradascio,
- M. Breuhaus,
- R. Brose,
- A. M. Brown,
- F. Brun,
- B. Bruno,
- T. Bulik,
- C. Burger-Scheidlin,
- S. Caroff,
- S. Casanova,
- R. Cecil,
- J. Celic,
- M. Cerruti,
- T. Chand,
- S. Chandra,
- A. Chen,
- J. Chibueze,
- O. Chibueze,
- G. Cotter,
- J. Damascene Mbarubucyeye,
- I. D. Davids,
- A. Djannati-Ataï,
- A. Dmytriiev,
- V. Doroshenko,
- K. Egberts,
- S. Einecke,
- J.-P. Ernenwein,
- S. Fegan,
- G. Fontaine,
- M. Füßling,
- S. Funk,
- S. Gabici,
- S. Ghafourizadeh,
- G. Giavitto,
- D. Glawion,
- J. F. Glicenstein,
- P. Goswami,
- G. Grolleron,
- L. Haerer,
- W. Hofmann,
- T. L. Holch,
- M. Holler,
- D. Horns,
- M. Jamrozy,
- F. Jankowsky,
- V. Joshi,
- I. Jung-Richardt,
- E. Kasai,
- K. Katarzyński,
- R. Khatoon,
- B. Khélifi,
- W. Kluźniak,
- Nu. Komin,
- K. Kosack,
- D. Kostunin,
- R. G. Lang,
- S. Le Stum,
- F. Leitl,
- A. Lemière,
- J.-P. Lenain,
- F. Leuschner,
- A. Luashvili,
- J. Mackey,
- V. Marandon,
- P. Marchegiani,
- G. Martí-Devesa,
- R. Marx,
- A. Mehta,
- M. Meyer,
- A. Mitchell,
- R. Moderski,
- L. Mohrmann,
- A. Montanari,
- E. Moulin,
- M. de Naurois,
- J. Niemiec,
- A. Priyana Noel,
- P. O’Brien,
- S. Ohm,
- L. Olivera-Nieto,
- E. de Ona Wilhelmi,
- M. Ostrowski,
- S. Panny,
- M. Panter,
- G. Peron,
- D. A. Prokhorov,
- G. Pühlhofer,
- M. Punch,
- A. Quirrenbach,
- P. Reichherzer,
- A. Reimer,
- O. Reimer,
- H. Ren,
- F. Rieger,
- G. Rowell,
- B. Rudak,
- H. Rueda Ricarte,
- E. Ruiz-Velasco,
- V. Sahakian,
- H. Salzmann,
- D. A. Sanchez,
- A. Santangelo,
- M. Sasaki,
- F. Schüssler,
- H. M. Schutte,
- U. Schwanke,
- J. N. S. Shapopi,
- H. Sol,
- A. Specovius,
- S. Spencer,
- Ł. Stawarz,
- R. Steenkamp,
- S. Steinmassl,
- C. Steppa,
- I. Sushch,
- H. Suzuki,
- T. Takahashi,
- T. Tanaka,
- R. Terrier,
- N. Tsuji,
- C. van Eldik,
- B. van Soelen,
- M. Vecchi,
- J. Veh,
- J. Vink,
- T. Wach,
- S. J. Wagner,
- A. Wierzcholska,
- M. Zacharias,
- D. Zargaryan,
- A. A. Zdziarski,
- A. Zech,
- S. Zouari,
- N. Żywucka,
- D. A. H. Buckley,
- J. Cooper,
- D. Groenewald,
- H.E.S.S. Collaboration
Affiliations
- F. Aharonian
- Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland; Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany; Yerevan State University , 1 Alek Manukyan St, Yerevan 0025, Armenia
- F. Ait Benkhali
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- J. Aschersleben
- Kapteyn Astronomical Institute, University of Groningen , Landleven 12, 9747 AD Groningen, The Netherlands
- H. Ashkar
- ORCiD
- Laboratoire Leprince-Ringuet, École Polytechnique, CNRS, Institut Polytechnique de Paris , F-91128 Palaiseau, France
- M. Backes
- ORCiD
- University of Namibia , Department of Physics, Private Bag 13301, Windhoek 10005, Namibia; Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- V. Barbosa Martins
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- J. Barnard
- Department of Physics, University of the Free State , P.O. Box 339, Bloemfontein 9300, South Africa
- R. Batzofin
- ORCiD
- Institut für Physik und Astronomie, Universität Potsdam , Karl-Liebknecht-Strasse 24/25, D-14476 Potsdam, Germany
- Y. Becherini
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France; Department of Physics and Electrical Engineering, Linnaeus University , SE-351 95 Växjö, Sweden
- D. Berge
- ORCiD
- DESY , D-15738 Zeuthen, Germany; Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, D-12489 Berlin, Germany
- K. Bernlöhr
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- B. Bi
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- M. de Bony de Lavergne
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- M. Böttcher
- ORCiD
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- C. Boisson
- ORCiD
- Laboratoire Univers et Théories, Observatoire de Paris, Université PSL , CNRS, Université de Paris, F-92190 Meudon, France
- J. Bolmont
- Sorbonne Université, Université Paris Diderot , Sorbonne Paris Cité, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies, LPNHE, 4 Place Jussieu, F-75252 Paris, France
- J. Borowska
- Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, D-12489 Berlin, Germany
- M. Bouyahiaoui
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- F. Bradascio
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- M. Breuhaus
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- R. Brose
- ORCiD
- Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland
- A. M. Brown
- University of Oxford , Department of Physics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
- F. Brun
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- B. Bruno
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- T. Bulik
- Astronomical Observatory, The University of Warsaw , Al. Ujazdowskie 4, 00-478 Warsaw, Poland
- C. Burger-Scheidlin
- Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland
- S. Caroff
- ORCiD
- Université Savoie Mont Blanc, CNRS, Laboratoire d’Annecy de Physique des Particules—IN2P3 , F-74000 Annecy, France
- S. Casanova
- ORCiD
- Instytut Fizyki Ja̧drowej PAN , ul. Radzikowskiego 152, 31-342 Kraków, Poland
- R. Cecil
- Universität Hamburg , Institut für Experimentalphysik, Luruper Chaussee 149, D-22761 Hamburg, Germany
- J. Celic
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- M. Cerruti
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- T. Chand
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- S. Chandra
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- A. Chen
- ORCiD
- School of Physics, University of the Witwatersrand , 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050 South Africa
- J. Chibueze
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- O. Chibueze
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- G. Cotter
- ORCiD
- University of Oxford , Department of Physics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
- J. Damascene Mbarubucyeye
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- I. D. Davids
- University of Namibia , Department of Physics, Private Bag 13301, Windhoek 10005, Namibia
- A. Djannati-Ataï
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- A. Dmytriiev
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- V. Doroshenko
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- K. Egberts
- Institut für Physik und Astronomie, Universität Potsdam , Karl-Liebknecht-Strasse 24/25, D-14476 Potsdam, Germany
- S. Einecke
- School of Physical Sciences, University of Adelaide , Adelaide 5005, Australia
- J.-P. Ernenwein
- Aix Marseille Université , CNRS/IN2P3, CPPM, Marseille, France
- S. Fegan
- Laboratoire Leprince-Ringuet, École Polytechnique, CNRS, Institut Polytechnique de Paris , F-91128 Palaiseau, France
- G. Fontaine
- ORCiD
- Laboratoire Leprince-Ringuet, École Polytechnique, CNRS, Institut Polytechnique de Paris , F-91128 Palaiseau, France
- M. Füßling
- DESY , D-15738 Zeuthen, Germany
- S. Funk
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- S. Gabici
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- S. Ghafourizadeh
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- G. Giavitto
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- D. Glawion
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- J. F. Glicenstein
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- P. Goswami
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- G. Grolleron
- Sorbonne Université, Université Paris Diderot , Sorbonne Paris Cité, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies, LPNHE, 4 Place Jussieu, F-75252 Paris, France
- L. Haerer
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- W. Hofmann
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- T. L. Holch
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- M. Holler
- Leopold-Franzens-Universität Innsbruck, Institut für Astro- und Teilchenphysik , A-6020 Innsbruck, Austria
- D. Horns
- Universität Hamburg , Institut für Experimentalphysik, Luruper Chaussee 149, D-22761 Hamburg, Germany
- M. Jamrozy
- ORCiD
- Obserwatorium Astronomiczne , Uniwersytet Jagielloński, ul. Orla 171, 30-244 Kraków, Poland
- F. Jankowsky
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- V. Joshi
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- I. Jung-Richardt
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- E. Kasai
- University of Namibia , Department of Physics, Private Bag 13301, Windhoek 10005, Namibia
- K. Katarzyński
- Institute of Astronomy, Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
- R. Khatoon
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- B. Khélifi
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- W. Kluźniak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences , ul. Bartycka 18, 00-716 Warsaw, Poland
- Nu. Komin
- ORCiD
- School of Physics, University of the Witwatersrand , 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050 South Africa
- K. Kosack
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- D. Kostunin
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- R. G. Lang
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- S. Le Stum
- Aix Marseille Université , CNRS/IN2P3, CPPM, Marseille, France
- F. Leitl
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- A. Lemière
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- J.-P. Lenain
- ORCiD
- Sorbonne Université, Université Paris Diderot , Sorbonne Paris Cité, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies, LPNHE, 4 Place Jussieu, F-75252 Paris, France
- F. Leuschner
- ORCiD
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- A. Luashvili
- ORCiD
- Laboratoire Univers et Théories, Observatoire de Paris, Université PSL , CNRS, Université de Paris, F-92190 Meudon, France
- J. Mackey
- ORCiD
- Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland
- V. Marandon
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- P. Marchegiani
- ORCiD
- School of Physics, University of the Witwatersrand , 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050 South Africa
- G. Martí-Devesa
- ORCiD
- Leopold-Franzens-Universität Innsbruck, Institut für Astro- und Teilchenphysik , A-6020 Innsbruck, Austria
- R. Marx
- ORCiD
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- A. Mehta
- DESY , D-15738 Zeuthen, Germany
- M. Meyer
- Universität Hamburg , Institut für Experimentalphysik, Luruper Chaussee 149, D-22761 Hamburg, Germany
- A. Mitchell
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- R. Moderski
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences , ul. Bartycka 18, 00-716 Warsaw, Poland
- L. Mohrmann
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- A. Montanari
- ORCiD
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- E. Moulin
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- M. de Naurois
- Laboratoire Leprince-Ringuet, École Polytechnique, CNRS, Institut Polytechnique de Paris , F-91128 Palaiseau, France
- J. Niemiec
- ORCiD
- Instytut Fizyki Ja̧drowej PAN , ul. Radzikowskiego 152, 31-342 Kraków, Poland
- A. Priyana Noel
- Obserwatorium Astronomiczne , Uniwersytet Jagielloński, ul. Orla 171, 30-244 Kraków, Poland
- P. O’Brien
- Department of Physics and Astronomy, The University of Leicester, University Road , Leicester, LE1 7RH, UK
- S. Ohm
- ORCiD
- DESY , D-15738 Zeuthen, Germany
- L. Olivera-Nieto
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- E. de Ona Wilhelmi
- DESY , D-15738 Zeuthen, Germany
- M. Ostrowski
- ORCiD
- Obserwatorium Astronomiczne , Uniwersytet Jagielloński, ul. Orla 171, 30-244 Kraków, Poland
- S. Panny
- ORCiD
- Leopold-Franzens-Universität Innsbruck, Institut für Astro- und Teilchenphysik , A-6020 Innsbruck, Austria
- M. Panter
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- G. Peron
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- D. A. Prokhorov
- GRAPPA, Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
- G. Pühlhofer
- ORCiD
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- M. Punch
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- A. Quirrenbach
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- P. Reichherzer
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- A. Reimer
- ORCiD
- Leopold-Franzens-Universität Innsbruck, Institut für Astro- und Teilchenphysik , A-6020 Innsbruck, Austria
- O. Reimer
- Leopold-Franzens-Universität Innsbruck, Institut für Astro- und Teilchenphysik , A-6020 Innsbruck, Austria
- H. Ren
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- F. Rieger
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- G. Rowell
- ORCiD
- School of Physical Sciences, University of Adelaide , Adelaide 5005, Australia
- B. Rudak
- ORCiD
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences , ul. Bartycka 18, 00-716 Warsaw, Poland
- H. Rueda Ricarte
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- E. Ruiz-Velasco
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- V. Sahakian
- ORCiD
- Yerevan Physics Institute , 2 Alikhanian Brothers St., 0036 Yerevan, Armenia
- H. Salzmann
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- D. A. Sanchez
- Université Savoie Mont Blanc, CNRS, Laboratoire d’Annecy de Physique des Particules—IN2P3 , F-74000 Annecy, France
- A. Santangelo
- ORCiD
- Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
- M. Sasaki
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- F. Schüssler
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- H. M. Schutte
- ORCiD
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- U. Schwanke
- Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, D-12489 Berlin, Germany
- J. N. S. Shapopi
- ORCiD
- University of Namibia , Department of Physics, Private Bag 13301, Windhoek 10005, Namibia
- H. Sol
- Laboratoire Univers et Théories, Observatoire de Paris, Université PSL , CNRS, Université de Paris, F-92190 Meudon, France
- A. Specovius
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- S. Spencer
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- Ł. Stawarz
- Obserwatorium Astronomiczne , Uniwersytet Jagielloński, ul. Orla 171, 30-244 Kraków, Poland
- R. Steenkamp
- University of Namibia , Department of Physics, Private Bag 13301, Windhoek 10005, Namibia
- S. Steinmassl
- ORCiD
- Max-Planck-Institut für Kernphysik , P.O. Box 103980, D-69029 Heidelberg, Germany
- C. Steppa
- Institut für Physik und Astronomie, Universität Potsdam , Karl-Liebknecht-Strasse 24/25, D-14476 Potsdam, Germany
- I. Sushch
- ORCiD
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- H. Suzuki
- Department of Physics, Konan University , 8-9-1 Okamoto, Higashinada, Kobe, Hyogo 658-8501, Japan
- T. Takahashi
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study (UTIAS) , The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba, 277-8583, Japan
- T. Tanaka
- ORCiD
- Department of Physics, Konan University , 8-9-1 Okamoto, Higashinada, Kobe, Hyogo 658-8501, Japan
- R. Terrier
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- N. Tsuji
- ORCiD
- RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- C. van Eldik
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- B. van Soelen
- Department of Physics, University of the Free State , P.O. Box 339, Bloemfontein 9300, South Africa
- M. Vecchi
- Kapteyn Astronomical Institute, University of Groningen , Landleven 12, 9747 AD Groningen, The Netherlands
- J. Veh
- ORCiD
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- J. Vink
- GRAPPA, Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
- T. Wach
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics , Nikolaus-Fiebiger-Str. 2, D-91058 Erlangen, Germany
- S. J. Wagner
- ORCiD
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany
- A. Wierzcholska
- ORCiD
- Instytut Fizyki Ja̧drowej PAN , ul. Radzikowskiego 152, 31-342 Kraków, Poland
- M. Zacharias
- ORCiD
- Landessternwarte, Universität Heidelberg , Königstuhl 12, D-69117 Heidelberg, Germany; Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- D. Zargaryan
- ORCiD
- Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland
- A. A. Zdziarski
- ORCiD
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences , ul. Bartycka 18, 00-716 Warsaw, Poland
- A. Zech
- Laboratoire Univers et Théories, Observatoire de Paris, Université PSL , CNRS, Université de Paris, F-92190 Meudon, France
- S. Zouari
- ORCiD
- Université de Paris , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- N. Żywucka
- Centre for Space Research, North-West University , Potchefstroom 2520, South Africa
- D. A. H. Buckley
- Department of Physics, University of the Free State , P.O. Box 339, Bloemfontein 9300, South Africa; South African Astronomical Observatory , P.O. Box 9, Observatory 7935, South Africa; Southern African Large Telescope Foundation , P.O. Box 9, Observatory 7935, South Africa; Department of Astronomy, University of Cape Town , Private Bag X3, Rondebosch 7701, South Africa
- J. Cooper
- Department of Physics, University of the Free State , P.O. Box 339, Bloemfontein 9300, South Africa
- D. Groenewald
- South African Astronomical Observatory , P.O. Box 9, Observatory 7935, South Africa; Southern African Large Telescope Foundation , P.O. Box 9, Observatory 7935, South Africa
- H.E.S.S. Collaboration
- DOI
- https://doi.org/10.3847/2041-8213/ace3c0
- Journal volume & issue
-
Vol. 952,
no. 2
p. L38
Abstract
In 2021 July, PKS 1510−089 exhibited a significant flux drop in the high-energy γ -ray (by a factor 10) and optical (by a factor 5) bands and remained in this low state throughout 2022. Similarly, the optical polarization in the source vanished, resulting in the optical spectrum being fully explained through the steady flux of the accretion disk and the broad-line region. Unlike the aforementioned bands, the very-high-energy γ -ray and X-ray fluxes did not exhibit a significant flux drop from year to year. This suggests that the steady-state very-high-energy γ -ray and X-ray fluxes originate from a different emission region than the vanished parts of the high-energy γ -ray and optical jet fluxes. The latter component has disappeared through either a swing of the jet away from the line of sight or a significant drop in the photon production efficiency of the jet close to the black hole. Either change could become visible in high-resolution radio images.
Keywords
- Blazars
- Relativistic jets
- Non-thermal radiation sources
- Flat-spectrum radio quasars
- Gamma-ray sources
- Spectropolarimetry
