The vanishing of the primary emission region in PKS 1510-089

Aharonian F, Benkhali FA, Aschersleben J, Ashkar H, Backes M, Martins VB, Barnard J, Batzofin R, Becherini Y, Berge D, Bernlöhr K, Bi B, de Bony de Lavergne M, Böttcher M, Boisson C, Bolmont J, Borowska J, Bouyahiaoui M, Bradascio F, Breuhaus M, Brose R, Brown AM, Brun F, Bruno B, Bulik T, Burger-Scheidlin C, Caroff S, Casanova S, Cecil R, Celic J, Cerruti M, Chand T, Chandra S, Chen A, Chibueze J, Chibueze O, Cotter G, Damascene Mbarubucyeye J, Davids ID, Djannati-Ataï A, Dmytriiev A, Doroshenko V, Egberts K, Einecke S, Ernenwein JP, Fegan S, Fontaine G, Füßling M, Funk S, Gabici S, Ghafourizadeh S, Giavitto G, Glawion D, Glicenstein JF, Goswami P, Grolleron G, Haerer L, Hofmann W, Holch TL, Holler M, Horns D, Jamrozy M, Jankowsky F, Joshi V, Jung-Richardt I, Kasai E, Katarzyński K, Khatoon R, Khélifi B, Kluźniak W, Komin N, Kosack K, Kostunin D, Guedes Lang R, Le Stum S, Leitl F, Lemière A, Lenain JP, Leuschner F, Luashvili A, Mackey J, Marandon V, Marchegiani P, Martí-Devesa G, Marx R, Mehta A, Meyer M, Mitchell A, Moderski R, Mohrmann L, Montanari A, Moulin E, de Naurois M, Niemiec J, Priyana Noel A, O’Brien P, Ohm S, Olivera-Nieto L, de Ona Wilhelmi E, Ostrowski M, Panny S, Panter M, Peron G, Prokhorov DA, Pühlhofer G, Punch M, Quirrenbach A, Reichherzer P, Reimer A, Reimer O, Ren H, Rieger F, Rowell G, Rudak B, Ricarte HR, Ruiz-Velasco E, Sahakian V, Salzmann H, Sanchez DA, Santangelo A, Sasaki M, Schüssler F, Schutte HM, Schwanke U, Shapopi JN, Sol H, Specovius A, Spencer S, Stawarz , Steenkamp R, Steinmassl S, Steppa C, Sushch I, Suzuki H, Takahashi T, Tanaka T, Terrier R, Tsuji N, van Eldik C, van Soelen B, Vecchi M, Veh J, Vink J, Wach T, Wagner SJ, Wierzcholska A, Zacharias M, Zargaryan D, Zdziarski AA, Zech A, Zouari S, Żywucka N, Buckley DA, Cooper J, Groenewald D (2023)

Publication Language: English

Publication Type: Journal article

Publication year: 2023

Journal

Publisher: arXiv

Book Volume: 952

Article Number: L38

Journal Issue: 2

URI: https://arxiv.org/abs/2307.01692

DOI: 10.3847/2041-8213/ace3c0

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.

Authors with CRIS profile

Involved external institutions

Ruprecht-Karls-Universität Heidelberg Germany (DE) Laboratoire Univers et Théories (LUTH) / Laboratory of the Universe and Theories France (FR) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Institute of Research into the Fundamental Laws of the Universe / Institut de recherche sur les lois fondamentales de l'univers (IRFU) France (FR) Humboldt-Universität zu Berlin Germany (DE) University of Namibia (UNAM) Namibia (NA) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Poland (PL) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Laboratoire Leprince-Ringuet (LLR) France (FR) Universität Potsdam Germany (DE) Eberhard Karls Universität Tübingen Germany (DE) University of Warsaw / Uniwersytet Warszawski Poland (PL) Université Paris-Sud France (FR) Noordwes-Universiteit / North-West University South Africa (ZA) Deutsches Elektronen-Synchrotron DESY Germany (DE) University of Groningen / Rijksuniversiteit Groningen Netherlands (NL) University of the Free State South Africa (ZA) Sorbonne Université France (FR) University of Oxford United Kingdom (GB) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) Universität Hamburg (UHH) Germany (DE) University of the Witwatersrand (WITS) South Africa (ZA) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) University of Adelaide Australia (AU)

How to cite

APA:

Aharonian, F., Benkhali, F.A., Aschersleben, J., Ashkar, H., Backes, M., Martins, V.B.,... Groenewald, D. (2023). The vanishing of the primary emission region in PKS 1510-089. Astrophysical Journal Letters, 952(2). https://doi.org/10.3847/2041-8213/ace3c0

MLA:

Aharonian, F., et al. "The vanishing of the primary emission region in PKS 1510-089." Astrophysical Journal Letters 952.2 (2023).

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