Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303

Abstract

Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and laboratories for elucidating the physics of relativistic jets. Here we report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LS I +61 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, suggesting the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or the absorption processes.

arXiv comment11 pages with 4 figures

References in corpus (19)

• Sources of Relativistic Jets in the Galaxy
• Limits and Confidence Intervals in the Presence of Nuisance Parameters
• Discovery of very high energy gamma-rays associated with an X-ray binary
• Discovery of a High-Energy Gamma-Ray-Emitting Persistent Microquasar
• Observation of Gamma Rays from the Galactic Center with the MAGIC Telescope
• Gamma-ray absorption in massive X-ray binaries
• Orbital Parameters of the Microquasar LSI +61 303
• A broadband leptonic model for gamma-ray emitting microquasars
• Cosmic Rays from Microquasars: a Narrow Component to the CR Spectrum?
• The Galactic magnetic field and propagation of ultra-high energy cosmic rays
• Effects of Interaction Induced Activities in Hickson Compact Groups: CO and FIR Study
• Hadronic high-energy gamma-ray emission from the microquasar LS I $+61303$
• One-sided jet at milliarcsecond scales in LSI+61303
• Simultaneous X-ray and Radio Monitoring of the Unusual Binary LSI+61 303: Measurements of the Lightcurve and High-Energy Spectrum
• Propagation of very high energy gamma-rays inside massive binaries LS 5039 and LSI +61 303
• LSI+61303 in the context of microquasars
• MAGIC observations of very high energy gamma-rays from HESS J1813-178
• gamma-ray emission from microquasars: a numerical model for LSI+61 303
• Magnetized cosmic walls

Cited by in corpus (244)

• High-energy neutrinos in the context of multimessenger physics
• Teraelectronvolt Astronomy
• Gamma-ray binaries and related systems
• 3.9 day orbital modulation in the TeV gamma-ray flux and spectrum from the X-ray binary LS 5039
• Very High Energy Gamma-ray Radiation from the Stellar-mass Black Hole Cygnus X-1
• Search for Spatially Extended Fermi-LAT Sources Using Two Years of Data
• VERITAS Observations of the gamma-Ray Binary LS I +61 303
• Very high energy particle acceleration powered by the jets of the microquasar SS 433
• Fermi LAT Observations of LS I +61 303: First detection of an orbital modulation in GeV Gamma Rays
• Understanding the Very High-Energy Emission from Microquasars
• Modeling interaction of relativistic and nonrelativistic winds in binary system PSR 1259-63/SS2883. I.Hydrodynamical limit
• Accretion vs colliding wind models for the gamma-ray binary LS I +61 303: an assessment
• Potential Neutrino Signals from Galactic Gamma-Ray Sources
• The Orbits of the Gamma-ray Binaries LS I +61 303 and LS 5039
• HESS J0632+057 : A new gamma-ray binary?
• Periodic very high energy gamma-ray emission from LS I +61 303 observed with the MAGIC telescope
• A revised catalogue of EGRET gamma-ray sources
• The proton low-mass microquasar: high-energy emission
• Study of the Spectral and Temporal Characteristics of X-Ray Emission of the Gamma-Ray Binary LS 5039 with Suzaku
• $e^{\pm }$ Excesses in the Cosmic Ray Spectrum and Possible Interpretations
• Magnetic field effects on neutrino production in microquasars
• Relativistic Doppler-boosted emission in gamma-ray binaries
• A 3D dynamical model of the colliding winds in binary systems
• Fundamentals of collisionless shocks for astrophysical application, 2. Relativistic shocks
• MAGIC observations of the unidentified TeV gamma-ray source TeV J2032+4130
• Long-term monitoring of the high-energy gamma-ray emission from LS I +61° 303 and LS 5039
• A magnetar-like event from LS I +61 303 and its nature as a gamma-ray binary
• Gamma ray astrophysics: the EGRET results
• A New TeV Binary: The Discovery of an Orbital Period in HESS J0632+057
• The modulation of the gamma-ray emission from the binary LS 5039
• INTEGRAL and XMM-Newton observations of LSI +61 303
• Joint H-alpha and X-Ray Observations of Massive X-Ray Binaries. II. The Be X-ray Binary and Microquasar LS I +61 303
• A compact pulsar wind nebula model of the gamma-ray loud binary LS I +61 303
• High-Energy Astrophysics with Neutrino Telescopes
• Modeling high-energy light curves of the PSR B1259-63/LS 2883 binary based on 3-D SPH simulations
• Unraveling the high-energy emission components of gamma-ray binaries
• XMM-Newton observation of a spectral state transition in the peculiar radio/X-ray/gamma-ray source LS I +61 303
• Search for Point Sources of High Energy Neutrinos with Final Data from AMANDA-II
• The Fermi All-sky Variability Analysis: A list of flaring gamma-ray sources and the search for transients in our Galaxy
• High-energy emission from jet-clump interactions in microquasars
• Magic constraints on Gamma-ray emission from Cygnus X-3
• Multi-wavelength (radio, X-ray and gamma-ray) observations of the gamma-ray binary LS I +61 303
• Correlated X-ray and Very High Energy emission in the gamma-ray binary LS I +61 303
• Very Energetic Gamma-Rays from Microquasars and Binary Pulsars
• The gamma-ray binary LS 5039: mass and orbit constraints from MOST observations
• Gamma-ray observations of the microquasars Cygnus X-1, Cygnus X-3, GRS 1915+105, and GX 339-4 with the Fermi Large Area Telescope
• Leptonic secondary emission in a hadronic microquasar model
• The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039
• The TACTIC atmospheric Cherenkov Imaging telescope
• Modelling interaction of relativistic and non-relativistic winds in binary system PSR B1259-63/SS2883 - II. Impact of magnetization and anisotropy of the pulsar wind
• First Neutrino Point-Source Results From the 22-String IceCube Detector
• Chandra Observations of the Gamma-ray Binary LSI+61303: Extended X-ray Structure?
• Large-scale flow dynamics and radiation in pulsar gamma-ray binaries
• Long-term TeV and X-ray Observations of the Gamma-ray Binary HESS J0632+057
• High Energy Gamma-Ray Astronomy
• Evidence for long-term Gamma-ray and X-ray variability from the unidentified TeV source HESS J0632+057
• Long Term X-ray Monitoring Of The TeV Binary LS I +61 303 with RXTE
• Associating long-term gamma-ray variability with the superorbital period of LS I 61 303
• Pulsar wind zone processes in LS 5039
• H.E.S.S. Observations of the Binary System PSR B1259-63/LS 2883 around the 2010/2011 Periastron Passage
• Gamma-ray variability from wind clumping in HMXBs with jets
• Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year
• Multiwavelength Observations of LS I +61 303 with VERITAS, Swift and RXTE
• Non-thermal emission from secondary pairs in close TeV binary systems
• Simulating gamma-ray binaries with a relativistic extension of RAMSES
• High-Energy Aspects of Astrophysical Jets
• PSRs J0248+6021 and J2240+5832: Young Pulsars in the Northern Galactic Plane. Discovery, Timing, and Gamma-ray observations
• The radio counterpart of the likely TeV binary HESS J0632+057
• 3D simulations of wind-jet interaction in massive X-ray binaries
• Long-term Stability of Non-thermal X-ray Modulation in the Gamma-ray Binary LS 5039
• Very-high energy gamma-ray astronomy: A 23-year success story in high-energy astroparticle physics
• VERITAS Observations of the TeV Binary LS I +61 303 During 2008-2010
• HESS J1943+213: a candidate extreme BL Lacertae object
• High-Energy emissions from the Pulsar/Be binary system PSR J2032+4127/MT91 213
• Discovery of variable VHE gamma-ray emission from the binary system 1FGL J1018.6-5856
• Unveiling the super-orbital modulation of LS I +61 303 in X-rays
• Modeling the multi-wavelength light curves of PSR B1259-63/SS 2883
• Superorbital modulation of X-ray emission from gamma-ray binary LSI +61 303
• Spectral signature of a free pulsar wind in the gamma-ray binaries LS 5039 and LSI +61$\degr$303
• A Time Dependent Leptonic Model for Microquasar Jets: Application to LSI 61 303
• H.E.S.S. Observations of the Prompt and Afterglow Phases of GRB 060602B
• Radio Spectral Index Analysis and Classes of Ejection in LS I +61 303
• Thermal X-ray Emission from the Shocked Stellar Wind of Pulsar Gamma-ray Binaries
• Physical properties of the gamma-ray binary LS 5039 through low and high frequency radio observations
• Pulsar model of the high energy phenomenology of LS 5039
• Direct Wind Accretion and Jet Launch in Binary Systems
• On the origin of correlated X-ray/VHE emission from LS I +61 303
• Modelling Jets, Tori and Flares in Pulsar Wind Nebulae
• gamma-ray emission from LS I +61 303: The impact of basic system uncertainties
• The GeV-TeV Connection in Galactic gamma-ray sources
• A model of the TeV flare of Cygnus X-1: electron acceleration and extended pair cascades
• Dissecting the region of 3EG J1837-0423 and HESS J1841-055 with INTEGRAL
• INTEGRAL observation of hard X-ray variability of the TeV binary LS5039 / RX J1826.2-1450
• Relativistic fluid modelling of gamma-ray binaries. I. The model
• Swift/XRT monitoring of five orbital cycles of LSI +61 303
• The Black Hole Candidate LSI+61303
• Estimating the contribution of Galactic sources to the diffuse neutrino flux
• Super-orbital variability of LS I +61°303 at TeV energies
• Possible changes of state and relevant timescales for a neutron star in LS I +61°303
• Binaries with the eyes of CTA
• Variability in the orbital profiles of the X-ray emission of the gamma-ray binary LS I +61 303
• Probing the Nature of the unidentified TeV Gamma-ray source HESS J0632+057 with Swift
• Long-term X-ray monitoring of LS I +61 303: analysis of spectral variability and flares
• LS I +61 303 as a potential neutrino source on the light of MAGIC results
• GeV-TeV gamma-ray light curves expected in the IC electron-positron pair cascade model for massive binaries: Application to LS 5039
• Hydrodynamics of interaction of pulsar and stellar winds and its impact on the high energy radiation of binary pulsar systems
• Overview of non-transient gamma-ray binaries and prospects for the Cherenkov Telescope Array
• Inverse Compton e-p pair cascade model for the gamma-ray production in massive binary LSI +61^o 303
• High-energy emissions from the gamma-ray binary LS 5039
• Detection of VHE γ-rays from HESS J0632+057 during the 2011 February X-ray outburst with the MAGIC Telescopes
• Probing the Pulsar Wind in the gamma-ray Binary System PSR B1259-63/SS 2883
• X-ray absorption and occultation in LS 5039
• A Radio Pulsar Search of the Gamma-ray Binaries LS I +61 303 and LS 5039
• H.E.S.S. observations of the Carina nebula and its enigmatic colliding wind binary Eta Carinae
• H.E.S.S. and Fermi-LAT observations of PSR B1259-63/LS 2883 during its 2014 and 2017 periastron passages
• Energetic and Broad Band Spectral Distribution of Emission from Astronomical Jets
• Modelling the multi-wavelength emissions from PSR B1259-63/LS 2883: the effects of the stellar disc on shock radiations
• Exceptionally bright TeV flares from the binary LS I +61${}^{\circ }$ 303
• GeV detection of HESS J0632+057
• The population of radio sources in the field of the unidentified gamma-ray source TeV J2032+4130
• Very high energy gamma-ray production inside the massive binary system Cyg X-1/HDE 226868
• H-alpha observations of the gamma-ray-emitting Be/X-ray binary LSI+61303: orbital modulation, disk truncation, and long-term variability
• Long-term monitoring of LS I+61303 with INTEGRAL
• Gamma-ray observations of the Be/pulsar binary 1A 0535+262 during a giant X-ray outburst
• Investigation of the energy dependence of the orbital light curve in LS 5039
• TeV Gamma-rays from accreting magnetars in massive binaries
• Orbital variability of the optical linear polarization of the $\gamma$-ray binary LS I +61 303 and new constraints on the orbital parameters
• Search for VHE $\gamma$-ray emission from the globular cluster M13 with the MAGIC telescope
• TeV source HESS J1804-216 in X-rays and other wavelengths
• 3D RMHD simulations of jet-wind interactions in High Mass X-ray Binaries
• A model for the two component gamma-ray spectra observed from the gamma-ray binaries
• The TeV binary HESS J0632+057 in the low and high X-ray state
• Swift observations of 1FGL J1018.6-5856
• The missing GeV γ-ray binary: Searching for HESS J0632+057 with Fermi-LAT
• Gamma-ray absorption in the microquasar SS433
• Spectral evolution of non-thermal electron distributions in intense radiation fields
• Detection of the gamma-ray binary LS I +61 303 in a low flux state at Very High Energy gamma-rays with the MAGIC Telescopes in 2009
• Feasibility Study of Lense-Thirring Precession in LS I +61303
• Spectral analysis in orbital/superorbital phase space and hints of superorbital variability in the hard X-rays of LS I +61 303
• HESS J0632+057: hydrodynamics and nonthermal emission
• First bounds on the very high energy gamma-ray emission from Arp 220
• The HAWC real-time flare monitor for rapid detection of transient events
• Modulated Gamma-ray emission from compact millisecond pulsar binary systems
• Neutrino signal from gamma-ray loud binaries powered by high energy protons
• H-alpha Emission Variability in the gamma-ray Binary LS I +61 303
• Search for radio pulsations in LS I +61 303
• Refining the origins of the gamma-ray binary 1FGL J1018.6-5856
• Theoretical overview on high-energy emission in microquasars
• High-energy gamma-ray emission from the inner jet of LS I+61 303: the hadronic contribution revisited
• First bounds on the high-energy emission from isolated Wolf-Rayet binary systems
• Multiwavelength Observations of The TeV Binary LS I +61 303 with VERITAS, Fermi-LAT and Swift-XRT During a TeV Outburst
• Status of Identification of VHE gamma-ray sources
• Impact of the orbital uncertainties on the timing of pulsars in binary systems
• High energy gamma-ray emission from compact galactic sources in the context of observations with the next generation Cherenkov Telescope Arrays
• Modeling the effects of clumpy winds in the high-energy light curves of γ-ray binaries
• Searches for periodic neutrino emission from binary systems with 22 and 40 strings of IceCube
• Monte-Carlo Simulations of Radio Emitting Secondaries in Gamma-Ray Binaries
• Galactic and Extragalactic Sources of Very High Energy Gamma-rays
• A search for Very High Energy gamma-ray emission from Scorpius X-1 with the MAGIC telescopes
• Gamma-ray observations of MAXI J1820+070 during the 2018 outburst
• Simulations of neutrino and gamma-ray production from relativistic black-hole microquasar jets
• Astrophysics in 2006
• X-ray and gamma-ray orbital variability from the gamma-ray binary HESS J1832-093
• Very high energy gamma-ray emission from X-ray transients during major outbursts
• Radio QPO in the $\gamma$-ray-loud X-ray binary LS I +61${}^{\circ }$303
• A rotating hollow cone anisotropy of TeV emission from binary systems
• The jet and arc molecular clouds toward Westerlund 2, RCW 49, and HESS J1023-575; 12CO and 13CO (J=2-1 and J=1-0) observations with NANTEN2 and Mopra Telescope
• Modelling the correlated keV/TeV light curves of Be/gamma-ray binaries
• Radio emission and jets from microquasars
• Connection between orbital modulation of H-alpha and gamma-rays in the Be/X-ray binary LSI+61303
• Gamma-ray binaries
• Electron transport with re-acceleration and radiation in the jets of X-ray binaries
• Constraints on the Geometry of the VHE Emission in LS 5039 from Photon-Photon Deabsorption
• The Multi-wavelength Characteristics of the TeV Binary LS I +61${}^{\circ }$ 303
• Modulation Mechanism of TeV, GeV, and X-ray Emission in LS5039
• Broad-Band High-Energy Emission of the Gamma-ray Binary System LS 5039: Spectral and Temporal Features using NuSTAR and Fermi Observations
• Simultaneous long-term monitoring of LS I +61°303 by OVRO and Fermi-LAT
• On the multiwavelength spectrum of the microquasar 1E 1740.7-2942
• TeV Gamma Ray Astronomy
• Parameter constraints for high-energy models of colliding winds of massive stars: the case WR 147
• Does the gamma-ray binary LS I +61°303 harbor a magnetar?
• Fast time optical variability in Be/X-ray binaries. Pulsation and rotation
• Search for variable gamma-ray emission from the Galactic plane in the Fermi data
• Relativistic Magnetized Astrophysical Plasma Outflows in Black-Hole Microquasars
• A Precessing Jet Scenario for the Multi-Wavelength Long-Term Modulation of LS I +61${}^{\circ }$303
• Spectropolarimetric Study on Circumstellar Structure of Microquasar LS I +61deg 303
• Orbital and superorbital variability of LS I +61 303 at low radio frequencies with GMRT and LOFAR
• Radio detections towards unidentified variable EGRET sources
• Radius, rotational period and inclination of the Be stars in the Be/gamma-ray binaries MWC 148 and MWC 656
• High-(Energy)-Lights -- The Very High Energy Gamma-Ray Sky
• Inverse Compton Scattering Model for X-ray Emission of the Gamma-ray Binary LS 5039
• Polarization study of gamma-ray binary
• Study of the High Energy Gamma-ray Emission from the Crab Pulsar with the MAGIC telescope and Fermi-LAT
• GeV emission of gamma-ray binary with pulsar scenario
• A precessing stellar disk model for superorbital modulations of the gamma-ray binary LS I+61${}^{\circ }$ 303
• High energy radiation from luminous and magnetized stars
• Unveiling properties of the non-thermal X-ray production in the gamma-ray binary LS 5039 using the long-term pattern of its fast X-ray variability
• Achromatic rapid flares in hard X-rays in the $\gamma$-ray binary LS I +61-303
• Optical depths for gamma-rays in the radiation field of a star heated by external X-ray source in LMXBs: Application to Her X-1 and Sco X-1
• Recent Topics on Very High Energy Gamma-ray Astronomy
• VHE Gamma-rays from Galactic X-ray Binary Systems
• Peculiar objects towards 3FGL J0133.3+5930: an eclipsing Be star and an active galactic nucleus
• CANGAROO-III observation of TeV gamma rays from the unidentified gamma-ray source HESS J1614-518
• Quantitative constraint on the contribution of resolved gamma-ray sources to the sub-PeV Galactic diffuse gamma-ray flux measured by the Tibet ASγ experiment
• Rapid X-ray variability of the gamma-ray binary LS I+61 303
• Demystifying an unidentified EGRET source by VHE gamma-ray observations
• Status of Very High Energy gamma-ray Astronomy as of early 2008
• Models for gamma-ray production in low-mass microquasars
• Best-Bet Astrophysical Neutrino Sources
• High-Energy Cosmology: gamma rays and neutrinos from beyond the galaxy
• Recent VERITAS Results
• Application of Bayesian Neural Networks to Energy Reconstruction in EAS Experiments for ground-based TeV Astrophysics
• VHE Emission from PSR B1259-63/LS 2883 around 2010/2011 Periastron Passage observed with H.E.S.S
• Optical microflares in LS I +61 303 and the search for their multiwavelength counterpart
• Results from MAGIC's first observation cycle on galactic sources
• The strange case of HESS J0632+057 and the γ-ray High Mass X-ray Binaries
• HAWC Search for High-Mass Microquasars
• Gamma ray attenuation in X-ray binaries: An application to LSI +61 303
• Studying the interaction between microquasar jets and their environments
• Synchrotron emission from secondary leptons in microquasar jets
• The MAGIC highlights of the gamma ray binary LS I +61 303
• LS I+61 303: microquasar or not microquasar?
• Using X-ray observations to identify the particle acceleration mechanisms in VHE SNRs and "dark" VHE sources
• Observations of microquasars with the MAGIC telescope
• Secondary emission behind the radio outflows in gamma-ray binaries?
• VHE observations of binary systems performed with the MAGIC telescopes
• On the interaction of jets with stellar winds in XRBs
• Results from the binaries LS I +61°303 and LS 5039 after 2.5 years of Fermi monitoring
• Whipple Telescope Observations of LS I +61 303: 2004-2006
• Gamma-ray emission from pulsar/massive-star binaries
• First results of galactic observations with MAGIC
• Similarity and diversity of black holes - view from the Very High Energies
• On the X-ray/TeV connection in Galactic jet sources
• INTEGRAL View of TeV Sources: A Legacy for the CTA Project
• The Major Gamma-ray Imaging Cherenkov Telescopes (MAGIC)
• Expected gamma-ray emission from x-ray binaries
• Discovery of microquasar LS I +61 303 at very high energy gamma-rays with MAGIC
• Observations of LSI+61303 with Swift
• Observation of Galactic Sources of Very High Energy Gamma-Rays with the MAGIC Telescope
• Non-Thermal Emission from Galactic Jets
• Cherenkov Telescope results on gamma-ray binaries
• High-energy emission from microqusars
• Spectral lags of flaring events in $LSI+61^o$ 303 from RXTE Observations
• H.E.S.S. Observations of LS 5039