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Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008
MAGIC Collaboration, J. Aleksić, H. Anderhub +161
The blazar PG 1553+113 is a well known TeV gamma-ray emitter. In this paper, we determine its spectral energy distribution using simultaneous multi-frequency data in order to study…
Correlated X-ray and Very High Energy emission in the gamma-ray binary LS I +61 303
The MAGIC Collaboration, H. Anderhub, L. A. Antonelli +153
The discovery of very high energy (VHE) gamma-ray emitting X-ray binaries has triggered an intense effort to better understand the particle acceleration, absorption, and emission m…
Simultaneous Multiwavelength observation of Mkn 501 in a low state in 2006
The MAGIC Collaboration, H. Anderhub, R. Sato +4
We present results of the multiwavelength campaign on the TeV blazar Mkn 501 performed in 2006 July, including MAGIC for the VHE gamma-ray band and Suzaku for the X-ray band. A VHE…
Gamma-rays from the IC pair cascade in the radiation field of an accretion disk: Application to CenA
J. Sitarek, W. Bednarek
The very short time scale variability of TeV -ray emission from active galaxies suggests that the acceleration process of particles and the production of primary -rays likely…
MAGIC Gamma-ray Telescope Observation of the Perseus Cluster of Galaxies: implications for cosmic rays, dark matter, and NGC1275
The MAGIC Collaboration, J. Aleksić, L. A. Antonelli +152
The Perseus galaxy cluster was observed by the MAGIC Cherenkov telescope for a total effective time of 24.4 hr during 2008 November and December. The resulting upper limits on the…
Radio Imaging of the Very-High-Energy Gamma-Ray Emission Region in the Central Engine of a Radio Galaxy
The VERITAS Collaboration, the VLBA 43 GHz M 87 Monitoring Team, the H. E. S. S. Collaboration +1
The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN accelerate particle…
Simultaneous Multiwavelength Observations of Markarian 421 During Outburst
The VERITAS Collaboration, I. de la Calle Perez, A. Ibarra +2
We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These campaigns obtained UV and X…
MAGIC Collaboration: Contributions to the 31st International Cosmic Ray Conference (ICRC 2009)
The MAGIC Collaboration, H. Anderhub, L. A. Antonelli +145
Index entry listing the contributed papers of the MAGIC collaboration to the 31th International Cosmic Ray Conference (ICRC 2009), July 7-15 2009, Łódź, Poland. The individual pape…
Upper limits for pulsars with MAGIC (2005/2006 observations)
R. De los Reyes, W. Bednarek, M. Camara +1
During the last 4 years the MAGIC collaboration has searched for high-energy gamma-ray emission of some of the most promising pulsar candidates. The low energy threshold of MAGIC o…
Multiwavelength Observations of Mrk 501 in 2008
D. Kranich, D. Paneque, A. Cesarini +16
The well-studied VHE (E >100 GeV) blazar Mrk 501 was observed between March and May 2008 as part of an extensive multiwavelength observation campaign including radio, optical, X-ra…
MAGIC observation of Globular Cluster M13 and its millisecond pulsars
T. Jogler, C. Delgado Mendez, M. T. Costado +2
Based on MAGIC observations from June and July 2007, we present upper limits to the E>140 GeV emission from the globular cluster M13. Those limits allow us to constrain the populat…
The June 2008 flare of Markarian 421 from optical to TeV energies
R. M. Wagner, I. Donnarumma, J. Grube +6
We present optical to very-high energy (VHE) gamma-ray observations of Mrk 421 between 2008 May 24 and June 23. A high-energy (HE) gamma-ray signal was detected by AGILE-GRID durin…
Suzaku and Multi-wavelength Observations of OJ 287 during the Periodic Optical Outburst in 2007
Hiromi Seta, Naoki Isobe, Makoto S. Tashiro +10
Suzaku observations of the blazar OJ 287 were performed in 2007 April 10--13 and November 7--9. They correspond to a quiescent and a flaring state, respectively. The X-ray spectra…
TeV neutrinos from accreting X-ray pulsars
Wlodek Bednarek
Pulsars inside binary systems can accrete matter that arrives up to the pulsar surface provided that its period is long enough. During the accretion process, matter has to be accel…
Search for VHE -ray emission from the globular cluster M13 with the MAGIC telescope
MAGIC Collaboration
Based on MAGIC observations from June and July 2007, we have obtained an integral upper limit to the VHE energy emission of the globular cluster M13 of $F(E>200 \textrm{GeV})<5.1\t…
TeV Gamma-rays from accreting magnetars in massive binaries
W. Bednarek
We consider the neutron star (NS) of the magnetar type inside the massive binary system. We determine the conditions under which the matter from the stellar wind can penetrate the…