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

@article{Albert2006VariableVG,
  title={Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303},
  author={Justin E Albert and Ester Aliu and H. Anderhub and P. Antoranz and A. Armada and Mar{\'i}a Asensio and C. Baixeras and J. A. Barrio and Michael Bartelt and Hendrik Bartko and Denis Bastieri and Sathyanarayan Reddy Bavikadi and W. Bednarek and Karsten Berger and Ciro Bigongiari and Adrian Biland and Erica Bisesi and R. K. Bock and Pol Bordas and Valenti Bosch-Ramon and Thomas Bretz and Ilia Britvitch and M. Camara and Emiliano Carmona and Ashot A. Chilingarian and Stefano Ciprini and J. A. Coarasa and Sebastian Commichau and J. L. Contreras and J. Cortina and Valentin Curtef and Varuzhan Danielyan and Francesco Dazzi and Alessandro De Angelis and Raquel de los Reyes and B. De Lotto and Eva Domingo-Santamarı́a and Daniela Dorner and Michele Doro and M. Errando and Michela Fagiolini and Daniel Ferenc and Enrique Fern{\'a}ndez and Roger Firpo and Josep Flix and M. Victoria Fonseca and Ll. Font and M Fuchs and Nicola Galante and M. Garczarczyk and Markus Gaug and Maria Giller and Florian Goebel and D. Hakobyan and Morihiro Hayashida and Thomas Hengstebeck and D. H{\"o}hne and Juergen Hose and C. C. Hsu and Paula Gina Isar and P. Jacon and O. Kalekin and Ralf Kosyra and Daniel Kranich and M. Laatiaoui and A. Laille and T. Lenisa and Patricia Liebing and Eila Lindfors and S. Lombardi and Francesco Longo and J. M. Lopez and M. Rutz Lopez and Eckart Lorenz and Franco Lucarelli and P. Majumdar and Galina Maneva and Karl Mannheim and Oriana Mansutti and Mose Mariotti and M. Mart{\'i}nez and Keiichi Mase and D. Mazin and C. Merck and M. Meucci and Manuel Meyer and J. M. Miranda and R. Mirzoyan and Satoko Mizobuchi and A. Moralejo and K. Nilsson and Emma de O{\~n}a-Wilhelmi and Raul Orduna and N. Otte and Igor Oya and D. Paneque and Riccardo Paoletti and Josep Maria Paredes and Mikko Pasanen and Donatella Pascoli and Felicitas Pauss and Nikolaj A. Pavel and R. G. Pegna and Massimo Persic and L. Peruzzo and Alessio Piccioli and Marianne Poller and Guy G. Pooley and E. Prandini and A. Raymers and Wolfgang Rhode and Marc Rib{\'o} and J. Rico and B. Riegel and Michael Rissi and Anne Robert and Gustavo E. Romero and S. R{\"u}gamer and Antonio Saggion and A. S{\'a}nchez and P. Sartori and Villi Scalzotto and Valeria Scapin and Robert Schmitt and Thomas Schweizer and Maxim Shayduk and Kenji Shinozaki and Steven N. Shore and N{\'u}ria Sidro and Aimo Sillanp{\"a}{\"a} and D. Sobczynska and A. Stamerra and Luisa Sabrina Stark and Leo O. Takalo and P. Temnikov and Diego Tescaro and Masahiro Teshima and Nadia Tonello and Antoni Torres and Diego F. Torres and Nicola Turini and H. P. Vankov and Vincenzo Vitale and R. Mark Wagner and Tadeusz Wibig and Wolfgang Wittek and Roberta Zanin and J. Zapatero},
  journal={Science},
  year={2006},
  volume={312},
  pages={1771 - 1773}
}
Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. 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, which suggests that the emission is periodic. The strongest gamma-ray emission is not observed when the two… 
Discovery of microquasar LS I +61 303 at very high energy gamma-rays with MAGIC
Here we report the discovery of very high energy gamma-ray emission from the radio emitting X-ray binary LS I +61 303 with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope. This high
Discovery of microquasar LS I + 61 303 at VHE gamma-rays with MAGIC
Here we report the discovery of very high energy (> 100GeV) γ-ray emission from the radio emitting X-ray binary LS I +61 303 with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope. This
Review on the multiwavelength emission of the gamma-ray binary LS I +61 303.
Gamma-ray binaries are systems composed of a massive star and a compact object that produce emission from radio to very high energy gamma-rays. LS I +61 303 is one of the only six gamma-ray binaries
SEARCH FOR VERY HIGH ENERGY GAMMA-RAY EMISSION FROM PULSAR-PULSAR WIND NEBULA SYSTEMS WITH THE MAGIC TELESCOPE
The MAGIC collaboration has searched for high-energy gamma-ray emission of some of the most promising pulsar candidates above an energy threshold of 50 GeV, an energy not reachable up to now by other
VHE GAMMA-RAYS FROM GALACTIC X-RAY BINARY SYSTEMS
The detection of TeV gamma-rays from LS 5039 and the binary pulsar PSR B1259–63 by HESS, and from LS I +61 303 and the stellar-mass black hole Cygnus X-1 by MAGIC, provides clear evidence of very
The Very-High-Energy Gamma-Ray Sky
TLDR
It is expected that observations with the next generation of stereoscopic arrays of imaging atmospheric Cherenkov telescopes over a very broad energy range from 1010 to 1015 electron volts will dramatically increase the number of very-high-energy gamma-ray sources, thus having a huge impact on the development of astrophysics, cosmology, and particle astrophysics.
Secondary emission behind the radio outflows in gamma-ray binaries
Several binary systems consisting of a massive star and a compact object have been detected above 100 GeV in the Galaxy. In most of these sources, gamma-rays show a modulation associated to the
Gamma-Ray Observations of Gamma-Ray Binaries
Gamma-ray binaries are binary systems that emit most of their radiative output above 1 MeV. Following the detection of five such systems in the past decade, they have been clearly established as a
Very high energy gamma-ray production inside the massive binary system Cyg X-1/HDE 226868
TeV γ -ray emission has recently been discovered by Cherenkov telescopes from two microquasars, LS 5039 and LS I +61 o 303. This emission is likely to be produced inside the binary system since in
Gamma-ray binaries
Abstract Recent observations have shown that some compact stellar binaries radiate the highest energy light in the universe. The challenge has been to determine the nature of the compact object and
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References

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Discovery of a high-energy gamma-ray-emitting persistent microquasar
TLDR
The star LS 5039 is a new microquasar system with apparent persistent ejection of relativistic plasma at a 3-kiloparsec distance from the sun and may be associated with a gamma-ray source discovered by the Energetic Gamma Ray Experiment Telescope (EGRET) on board the COMPTON-Gamma Ray Observatory satellite.
Hadronic high-energy gamma-ray emission from the microquasar LS I +61 303
We present a hadronic model for gamma-ray production in the microquasar LS I +61 303. The system is formed by a neutron star that accretes matter from the dense and slow equatorial wind of the Be
Discovery of Very High Energy Gamma Rays Associated with an X-ray Binary
TLDR
Evidence for gamma-ray emission of >100 gigaelectron volts from a candidate microquasar, LS 5039, is found, showing that particles are also accelerated to very high energies in these systems.
Orbital parameters of the microquasar LS I +61 303
New optical spectroscopy of the high-mass X-ray binary microquasar LS I +61 303 is presented. Eccentric orbital fits to our radial velocity measurements yield updated orbital parameters in good
Simultaneous X-Ray and Radio Monitoring of the Unusual Binary LS I +61°303: Measurements of the Light Curve and High-Energy Spectrum
The binary system, LS I +61°303, is unusual both because of the dramatic, periodic, radio outbursts, and because of its possible association with the 100 MeV gamma-ray source, 2CG 135+01. We have
γ-ray emission from microquasars: A numerical model for LSI +61°303
We explore the possible association between the microquasar LSI +61 ◦ 303 and the EGRET source 2CG 135+01/3EG J0241+6103 by studying, with a detailed numerical model, whether this system can produce
A broadband leptonic model for gamma-ray emitting microquasars
the date of receipt and acceptance should be inserted later Abstract. Observational and theoretical studies point to microquasars (MQs) as possible counterparts of a significant fraction of the
Propagation of very high energy γ‐rays inside massive binaries LS 5039 and LSI +61○ 303
Two massive binary systems of the microquasar type, LS 5039 and LSI +61° 303, have been suggested as possible counterparts of EGRET sources. LS 5039 has also been recently detected in TeV γ-rays.
Cosmic rays from microquasars: a narrow component to the CR spectrum?
We propose that relativistic Galactic jets like those observed in GRS 1915+105 and GRO J1655-40 may produce a small but measurable contribution to the cosmic ray (CR) spectrum. If these jets contain
New high energy γ-ray sources observed by COS B
LOCALISED γ-ray sources contribute to the overall galactic emission; some of these sources have been identified with known astronomical objects1,2, while several unidentified γ-ray sources have also
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