Detection of very high energy gamma-ray emission from the gravitationally-lensed blazar QSO B0218+357 with the MAGIC telescopes

Abstract

Context. QSO B0218+357 is a gravitationally lensed blazar located at a redshift of 0.944. The gravitational lensing splits the emitted radiation into two components, spatially indistinguishable by gamma-ray instruments, but separated by a 10-12 day delay. In July 2014, QSO B0218+357 experienced a violent flare observed by the Fermi-LAT and followed by the MAGIC telescopes. Aims. The spectral energy distribution of QSO B0218+357 can give information on the energetics of z ~ 1 very high energy gamma- ray sources. Moreover the gamma-ray emission can also be used as a probe of the extragalactic background light at z ~ 1. Methods. MAGIC performed observations of QSO B0218+357 during the expected arrival time of the delayed component of the emission. The MAGIC and Fermi-LAT observations were accompanied by quasi-simultaneous optical data from the KVA telescope and X-ray observations by Swift-XRT. We construct a multiwavelength spectral energy distribution of QSO B0218+357 and use it to model the source. The GeV and sub-TeV data, obtained by Fermi-LAT and MAGIC, are used to set constraints on the extragalactic background light. Results. Very high energy gamma-ray emission was detected from the direction of QSO B0218+357 by the MAGIC telescopes during the expected time of arrival of the trailing component of the flare, making it the farthest very high energy gamma-ray sources detected to date. The observed emission spans the energy range from 65 to 175 GeV. The combined MAGIC and Fermi-LAT spectral energy distribution of QSO B0218+357 is consistent with current extragalactic background light models. The broad band emission can be modeled in the framework of a two zone external Compton scenario, where the GeV emission comes from an emission region in the jet, located outside the broad line region.

arXiv comment11 pages, 6 figures, accepted for publication in A&A

References in corpus (50)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• The Swift X-ray Telescope
• The Swift Ultra-Violet/Optical Telescope
• The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
• Extragalactic Background Light Inferred from AEGIS Galaxy SED-type Fractions
• The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• General physical properties of bright Fermi blazars
• Modeling the Extragalactic Background Light from Stars and Dust
• The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
• Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra
• Canonical high power blazars
• Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?
• Relativistic Jets Shine through Shocks or Magnetic Reconnection?
• The Imprint of The Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
• The major upgrade of the MAGIC telescopes, Part I: The hardware improvements and the commissioning of the system
• Dust and Extinction Curves in Galaxies with z>0: The Interstellar Medium of Gravitational Lens Galaxies
• New limits on the density of the extragalactic background light in the optical to the far-infrared from the spectra of all known TeV blazars
• Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S
• HST Observations of 10 Two-Image Gravitational Lenses
• Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars
• Time delay for the gravitational lens system B0218+357
• Fermi/LAT broad emission line blazars
• Host galaxy subtraction of TeV candidate BL Lacertae objects
• On the origin of the gamma-ray emission from the flaring blazar PKS 1222+216
• Very-high-energy gamma-rays from the Universe's middle age: detection of the z=0.940 blazar PKS 1441+25 with MAGIC
• Detection of the cosmic γ-ray horizon from multiwavelength observations of blazars
• Unfolding of differential energy spectra in the MAGIC experiment
• A Precise Determination of the Mid-Infrared Interstellar Extinction Law Based on the APOGEE Spectroscopic Survey
• Gamma rays from the quasar PKS 1441+25: story of an escape
• MAGIC gamma-ray and multifrequency observations of flat spectrum radio quasar PKS 1510-089 in early 2012
• The Hubble constant from gravitational lens CLASS B0218+357 using the Advanced Camera for Surveys
• Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
• On the spine-layer scenario for the very high-energy emission of NGC 1275
• The Redshift of the Lensed Object in the Einstein Ring B0218+357
• Exploring the blazar zone in High Energy flares of FSRQs
• MAGIC observations of the February 2014 flare of 1ES 1011+496 and ensuing constraint of the EBL density
• Fermi-LAT Detection of Gravitational Lens Delayed Gamma-ray Flares from Blazar B0218+357
• Further Investigation of the Time Delay, Magnification Ratios, and Variability in the Gravitational Lens 0218+357
• Time delays for 11 gravitationally lensed quasars revisited
• In-flight measurement of the absolute energy scale of the Fermi Large Area Telescope
• Free-free absorption in the gravitational lens JVAS B0218+357
• The Structure of the Strongly Lensed Gamma-ray Source B2 0218+35
• VLBI phase-reference observations of the gravitational lens JVAS B0218+357
• Microlensing constraint on the size of the gamma-ray emission region in blazar B0218+357
• How gravitational lensing helps gamma-ray photons avoid $\gamma -\gamma$ absorption
• Radio follow-up of the gamma-ray flaring gravitational lens JVAS B0218+357
• Variability of GeV gamma-ray emission in QSO B0218+357 due to microlensing on intermediate size structures
• Fermi-LAT Detection of a Hard Spectrum Flare from the Gravitationally Lensed Blazar B0218+357

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• Science with e-ASTROGAM (A space mission for MeV-GeV gamma-ray astrophysics)
• JWST's PEARLS: Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results
• Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1
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• The large gamma-ray flare of the FSRQ PKS 0346-27
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• Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020
• On the lensed blazar B0218+357
• An experimental test of gravity at high energy
• Model-independent Redshift Estimation of BL Lac Objects through VHE Observations
• Search of the pair echo signatures in the high-energy light curve of GRB190114C
• Fermi-LAT high $z$ AGN and the Extragalactic Background Light
• Probing the evolution of the EBL photon density out to $z\sim 1$ via $\gamma$-ray propagation measurements with Fermi
• Multi-frequency Variability Study of Flat-Spectrum Radio Quasar PKS 0346-27
• Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays
• The `blazar sequence' in TeV band
• Propagation of very-high-energy $\gamma$-rays from distant blazars
• Gamma-ray counterparts of 2WHSP high-synchrotron-peaked BL Lac objects as possible signatures of ultra-high-energy cosmic-ray emission
• Search for anomalous features in gamma-ray blazar spectra corrected for the absorption on the extragalactic background light
• Monitoring the Extragalactic High Energy Sky
• Very High Energy Flat Spectral Radio Quasar Candidates
• Multi-wavelength study of OT 081: broadband modelling of a transitional blazar
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• Newly born extragalactic millisecond pulsars as efficient emitters of PeV neutrinos
• Constraints on VHE gamma-ray emission of Flat Spectrum Radio Quasars with the MAGIC telescopes
• Gamma rays: propagation and detection
• First detection of VHE gamma-ray signal from the FSRQ TON 0599
• Revisiting the evidences for spectral anomalies in distant blazars: new data on the photon-ALP mixing
• Diffuse flux of PeV neutrinos from centrifugally accelerated protons in active galactic nuclei
• Intergalactic magnetic field lower limits up to the redshift $z\approx 3$
• Assessing the capability of random forest to predict the evolution of enhanced gamma-ray states of active galactic nuclei
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• Standardised formats and open-source analysis tools for the MAGIC telescopes data
• Time Domain Astronomy with the THESEUS Satellite
• Observations of blazar PKS 2023-07 in flaring state with HESS and Fermi-LAT in 2016-2017 and constraints on an intrinsic cut-off
• Relativistic Jets in Gamma-Ray-Emitting Narrow-Line Seyfert 1 Galaxies