Author: "Commichau, S" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Commichau, S"' showing total 220 results

Start Over Author "Commichau, S"

220 results on '"Commichau, S"'

1. FACT -- the First Cherenkov Telescope using a G-APD Camera for TeV Gamma-ray Astronomy (HEAD 2010)

Author: Anderhub, H., Backes, M., Biland, A., Boller, A., Braun, I., Bretz, T., Commichau, S., Commichau, V., Domke, M., Dorner, D., Gendotti, A., Grimm, O., von Gunten, H., Hildebrand, D., Horisberger, U., Köhne, J. -H., Krähenbühl, T., Kranich, D., Krumm, B., Lorenz, E., Lustermann, W., Mannheim, K., Neise, D., Pauss, F., Renker, D., Rhode, W., Rissi, M., Ribordy, M., Röser, U., Stark, L. S., Stucki, J. -P., Tibolla, O., Viertel, G., Vogler, P., Warda, K., and Weitzel, Q.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Geiger-mode Avalanche Photodiodes (G-APD) bear the potential to significantly improve the sensitivity of Imaging Air Cherenkov Telescopes (IACT). We are currently building the First G-APD Cherenkov Telescope (FACT) by refurbishing an old IACT with a mirror area of 9.5 square meters and construct a new, fine pixelized camera using novel G-APDs. The main goal is to evaluate the performance of a complete system by observing very high energy gamma-rays from the Crab Nebula. This is an important field test to check the feasibility of G-APD-based cameras to replace at some time the PMT-based cameras of planned future IACTs like AGIS and CTA. In this article, we present the basic design of such a camera as well as some important details to be taken into account., Comment: Poster shown at HEAD 2010, Big Island, Hawaii, March 1-4, 2010
Published: 2010

2. MAGIC observation of the GRB080430 afterglow

Author: MAGIC Collaboration, Aleksić, J., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Becker, J. K., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. de Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Goebel, F., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Strah, N., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., and de Ugarte-Postigo, A.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Context: Gamma-ray bursts are cosmological sources emitting radiation from the gamma-rays to the radio band. Substantial observational efforts have been devoted to the study of gamma-ray bursts during the prompt phase, i.e. the initial burst of high-energy radiation, and during the long-lasting afterglows. In spite of many successes in interpreting these phenomena, there are still several open key questions about the fundamental emission processes, their energetics and the environment. Aim: Independently of specific gamma-ray burst theoretical recipes, spectra in the GeV/TeV range are predicted to be remarkably simple, being satisfactorily modeled with power-laws, and therefore offer a very valuable tool to probe the extragalactic background light distribution. Furthermore, the simple detection of a component at very-high energies, i.e. at $\sim 100$\,GeV, would solve the ambiguity about the importance of various possible emission processes, which provide barely distinguishable scenarios at lower energies. Methods: We used the results of the MAGIC telescope observation of the moderate resdhift ($z\sim0.76$) \object{GRB\,080430} at energies above about 80\,GeV, to evaluate the perspective for late-afterglow observations with ground based GeV/TeV telescopes. Results: We obtained an upper limit of $F_{\rm 95%\,CL} = 5.5 \times 10^{-11}$\,erg\,cm$^{-2}$\,s$^{-1}$ for the very-high energy emission of \object{GRB\,080430}, which cannot set further constraints on the theoretical scenarios proposed for this object also due to the difficulties in modeling the low-energy afterglow. Nonetheless, our observations show that Cherenkov telescopes have already reached the required sensitivity to detect the GeV/TeV emission of GRBs at moderate redshift ($z \lesssim 0.8$), provided the observations are carried out at early times, close to the onset of their afterglow phase., Comment: 6 pages, 1 figure. Astronomy & Astrophysics, in press. Revision affects only the author list.
Published: 2010
Full Text: View/download PDF

3. Search for an extended VHE gamma-ray emission from Mrk 421 and Mrk 501 with the MAGIC Telescope

Author: MAGIC Collaboration, Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J. A., Bastieri, D., González, J. Becerra, Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. De Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fonseca, M. V., Font, L., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paiano, S., Paoletti, R., Paredes, J. M., Partini, S., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Torres, D. F., Vankov, H., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Neronov, A., and Semikoz, D. V.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Context: Part of the very high energy $\gamma$-ray radiation coming from extragalactic sources is absorbed through the pair production process on the extragalactic background light photons. Extragalactic magnetic fields alter the trajectories of these cascade pairs and, in turn, convert cosmic background photons to gamma-ray energies by inverse Compton scattering. These secondary photons can form an extended halo around bright VHE sources. Aims: We searched for an extended emission around the bright blazars Mrk 421 and Mrk 501 using the MAGIC telescope data. Methods: If extended emission is present, the angular distribution of reconstructed gamma-ray arrival directions around the source is broader than for a point-like source. In the analysis of a few tens of hours of observational data taken from Mrk 421 and Mrk 501 we used a newly developed method that provides better angular resolution. This method is based on the usage of multidimensional decision trees. Comparing the measured shapes of angular distributions with those expected from a point-like source one can detect or constrain possible extended emission around the source. We also studied the influence of different types of systematic errors on the shape of the distribution of reconstructed gamma-ray arrival directions for a point source. Results: We present upper limits for an extended emission calculated for both sources for various source extensions and emission profiles. We discuss possible constraints on the extragalactic magnetic fields strength. We obtain upper limits on the extended emission around the Mrk~421 (Mrk~501) on the level of < 5% (< 4%) of the Crab Nebula flux above the energy threshold of 300 GeV. Using these results we discuss possible constraints on the extragalactic magnetic fields strength around a few times $10^{-15}$~G., Comment: 8 pages, 9 figures, accepted for publication in A&A
Published: 2010
Full Text: View/download PDF

4. Gamma-ray excess from a stacked sample of high- and intermediate-frequency peaked blazars observed with the MAGIC telescope

Author: MAGIC Collaboration, Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J. A., Bastieri, D., González, J. Becerra, Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. De Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fonseca, M. V., Font, L., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E, Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paiano, S., Paoletti, R., Paredes, J. M., Partini, S., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J, Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Tibolla, O., Torres, D. F., Vankov, H., Wagner, R. M., Weitzel, Q., Zabalza, V, Zandanel, F., and Zanin, R.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Between 2004 and 2009 a sample of 28 X-ray selected high- and intermediate-frequency peaked blazars with a X-ray flux larger than 2 uJy at 1 keV in the redshift range from 0.018 to 0.361 was observed with the MAGIC telescope at energies above 100 GeV. Seven among them were detected and the results of these observations are discussed elsewhere. Here we concentrate on the remaining 21 blazars which were not detected during this observation campaign and present the 3 sigma (99.7 %) confidence upper limits on their flux. The individual flux upper limits lie between 1.6 % and 13.6 % of the integral flux from the Crab Nebula. Applying a stacking method to the sample of non-detections with a total of 394.1 hours exposure time, we find evidence for an excess with a cumulative significance of 4.9 standard deviations. It is not dominated by individual objects or flares, but increases linearly with the observation time as for a constant source with an integral flux level of ~1.5 % of that observed from the Crab Nebula above 150 GeV., Comment: 14 pages, 6 figures, accepted by ApJ
Published: 2010
Full Text: View/download PDF

5. MAGIC TeV Gamma-Ray Observations of Markarian 421 during Multiwavelength Campaigns in 2006

Author: MAGIC Collaboration, Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. De Cea, Mendez, C. Delgado, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fonseca, M. V., Font, L., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paiano, S., Paoletti, R., Paredes, J. M., Partini, S., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Torres, D. F., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., and Zanin, R.
Subjects: Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The Major Atmospheric Gamma Imaging Cerenkov (MAGIC) telescope participated in three multiwavelength (MWL) campaigns, observing the blazar Markarian (Mkn) 421 during the nights of 2006 April 28, 29, and 2006 June 14. We analyzed the corresponding MAGIC very-high energy observations during 9 nights from 2006 April 22 to 30 and on 2006 June 14. We inferred light curves with sub-day resolution and night-by-night energy spectra. A strong gamma-ray signal was detected from Mkn 421 on all observation nights. The flux (E > 250 GeV) varied on night-by-night basis between (0.92+-0.11)10^-10 cm^-2 s^-1 (0.57 Crab units) and (3.21+-0.15)10^-10 cm^-2 s^-1 (2.0 Crab units) in 2006 April. There is a clear indication for intra-night variability with a doubling time of 36+-10(stat) minutes on the night of 2006 April 29, establishing once more rapid flux variability for this object. For all individual nights gamma-ray spectra could be inferred, with power-law indices ranging from 1.66 to 2.47. We did not find statistically significant correlations between the spectral index and the flux state for individual nights. During the June 2006 campaign, a flux substantially lower than the one measured by the Whipple 10-m telescope four days later was found. Using a log-parabolic power law fit we deduced for some data sets the location of the spectral peak in the very-high energy regime. Our results confirm the indications of rising peak energy with increasing flux, as expected in leptonic acceleration models., Comment: 11 pages, 7 figures, accepted for publication by Astron. Astrophys
Published: 2010
Full Text: View/download PDF

6. A novel camera type for very high energy gamma-ray astronomy based on Geiger-mode avalanche photodiodes

Author: Anderhub, H., Backes, M., Biland, A., Boller, A., Braun, I., Bretz, T., Commichau, S., Commichau, V., Dorner, D., Gendotti, A., Grimm, O., von Gunten, H., Hildebrand, D., Horisberger, U., Krähenbühl, T., Kranich, D., Lorenz, E., Lustermann, W., Mannheim, K., Neise, D., Pauss, F., Renker, D., Rhode, W., Rissi, M., Röser, U., Rollke, S., Stark, L. S., Stucki, J. -P., Viertel, G., Vogler, P., and Weitzel, Q.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Geiger-mode avalanche photodiodes (G-APD) are promising new sensors for light detection in atmospheric Cherenkov telescopes. In this paper, the design and commissioning of a 36-pixel G-APD prototype camera is presented. The data acquisition is based on the Domino Ring Sampling (DRS2) chip. A sub-nanosecond time resolution has been achieved. Cosmic-ray induced air showers have been recorded using an imaging mirror setup, in a self-triggered mode. This is the first time that such measurements have been carried out with a complete G-APD camera., Comment: 9 pages with 11 figures
Published: 2009
Full Text: View/download PDF

7. Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008

Author: MAGIC Collaboration, Aleksić, J., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Becker, J. K., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. de Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Goebel, F., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Strah, N., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Pian, E., Bianchin, V., D'Ammando, F., Di Cocco, G., Fugazza, D., Ghisellini, G., Kurtanidze, O. M., Raiteri, C. M., Tosti, G., Treves, A., Vercellone, S., and Villata, M.
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: 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 its emission processes. An extensive campaign was carried out between March and April 2008, where optical, X-ray, high-energy (HE) gamma-ray, and very-high-energy (VHE) gamma-ray data were obtained with the KVA, Abastumani, REM, RossiXTE/ASM, AGILE and MAGIC telescopes, respectively. This is the first simultaneous broad-band (i.e., HE+VHE) gamma-ray observation, though AGILE did not detect the source. We combine data to derive source's spectral energy distribution and interpret its double peaked shape within the framework of a synchrotron self compton model, Comment: 5 pages, 2 figures, published
Published: 2009
Full Text: View/download PDF

8. Correlated X-ray and Very High Energy emission in the gamma-ray binary LS I +61 303

Author: The MAGIC Collaboration, Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Bigas, O. Blanch, Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. de Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Goebel, F., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Stark, L. S., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Falcone, A., Vetere, L., Gehrels, N., Trushkin, S., Dhawan, V., and Reig, P.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: 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 mechanisms in compact binary systems, which provide variable conditions along eccentric orbits. Despite this, the nature of some of these systems, and of the accelerated particles producing the VHE emission, is unclear. To answer some of these open questions, we conducted a multiwavelength campaign of the VHE gamma-ray emitting X-ray binary LS I +61 303 including the MAGIC telescope, XMM-Newton, and Swift during 60% of an orbit in 2007 September. We detect a simultaneous outburst at X-ray and VHE bands, with the peak at phase 0.62 and a similar shape at both wavelengths. A linear fit to the simultaneous X-ray/VHE pairs obtained during the outburst yields a correlation coefficient of r=0.97, while a linear fit to all simultaneous pairs provides r=0.81. Since a variable absorption of the VHE emission towards the observer is not expected for the data reported here, the correlation found indicates a simultaneity in the emission processes. Assuming that they are dominated by a single particle population, either hadronic or leptonic, the X-ray/VHE flux ratio favors leptonic models. This fact, together with the detected photon indices, suggests that in LS I +61 303 the X-rays are the result of synchrotron radiation of the same electrons that produce VHE emission as a result of inverse Compton scattering of stellar photons., Comment: To appear in The Astrophysical Journal Letters. 6 pages, 2 figures
Published: 2009
Full Text: View/download PDF

9. MAGIC Gamma-ray Telescope Observation of the Perseus Cluster of Galaxies: implications for cosmic rays, dark matter, and NGC1275

Author: The MAGIC Collaboration, Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. De Cea, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fonseca, M. V., Font, L., Galante, N., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paiano, S., Paoletti, R., Paredes, J. M., Partini, S., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Struebig, J. C., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Torres, D. F., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Pfrommer, C., Pinzke, A., Enßlin, T. A., Inoue, S., and Ghisellini, G.
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: 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 gamma-ray emission above 100 GeV are in the range of 4.6 to 7.5 x 10^{-12} cm^{-2} s^{-1} for spectral indices from -1.5 to -2.5, thereby constraining the emission produced by cosmic rays, dark matter annihilations, and the central radio galaxy NGC1275. Results are compatible with cosmological cluster simulations for the cosmic-ray-induced gamma-ray emission, constraining the average cosmic ray-to-thermal pressure to <4% for the cluster core region (<8% for the entire cluster). Using simplified assumptions adopted in earlier work (a power-law spectrum with an index of -2.1, constant cosmic ray-to-thermal pressure for the peripheral cluster regions while accounting for the adiabatic contraction during the cooling flow formation), we would limit the ratio of cosmic ray-to-thermal energy to E_CR/E_th<3%. The upper limit also translates into a level of gamma-ray emission from possible annihilations of the cluster dark matter (the dominant mass component) that is consistent with boost factors of ~10^4 for the typically expected dark matter annihilation-induced emission. Finally, the upper limits obtained for the gamma-ray emission of the central radio galaxy NGC1275 are consistent with the recent detection by the Fermi-LAT satellite. Due to the extremely large Doppler factors required for the jet, a one-zone synchrotron self-Compton model is implausible in this case. We reproduce the observed spectral energy density by using the structured jet (spine-layer) model which has previously been adopted to explain the high-energy emission of radio galaxies., Comment: 15 pages, 5 figures; accepted for publication in ApJ; updated to match the journal final version
Published: 2009
Full Text: View/download PDF

10. MAGIC Collaboration: Contributions to the 31st International Cosmic Ray Conference (ICRC 2009)

Author: The MAGIC Collaboration, Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britzger, D., Camara, M., Carmona, E., Carosi, A., Colin, P., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Dazzi, F., De Angelis, A., del Pozo, E. de Cea, Mendez, C. Delgado, Reyes, R. De los, De Lotto, B., De Maria, M., De Sabata, F., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., López, R. J. García, Garczarczyk, M., Gaug, M., Godinovic, N., Goebel, F., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Hsu, C. C., Jogler, T., Klepser, S., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Orito, R., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Stark, L. S., Suric, T., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., and Zapatero, J.
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Index entry listing the contributed papers of the MAGIC collaboration to the 31th International Cosmic Ray Conference (ICRC 2009), July 7-15 2009, \L\'od\'z, Poland. The individual papers are sorted by subject: Overview and Highlight Papers; MAGIC-II Status and Components; Software and Analysis Techniques; Technical Developments; Scientific Results. This HTML document includes clickable links to the papers that exist on the astro-ph arXiv. We hope that this will make it easy to access the MAGIC contributions in a systematic way., Comment: Index of the MAGIC conference proceedings for ICRC 2009. Added 6 papers missing in v1
Published: 2009

11. Monte Carlo Studies of Geomagnetic Field Effects on the Imaging Air Cherenkov Technique for the MAGIC Telescope Site

Author: Commichau, S. C., Biland, A., Contreras, J. L., Reyes, R. de los, Moralejo, A., Sitarek, J., and Sobczynska, D.
Subjects: Astrophysics
Abstract: Imaging air Cherenkov telescopes (IACTs) detect the Cherenkov light from extensive air showers (EAS) initiated by very high energy (VHE) gamma-rays impinging on the Earth's atmosphere. Due to the overwhelming background from hadron induced EAS, the discrimination of the rare gamma-like events is vital. The influence of the geomagnetic field (GF) on the development of EAS can further complicate the imaging air Cherenkov technique. The amount and the angular distribution of Cherenkov light from EAS can be obtained by means of Monte Carlo (MC) simulations. Here we present the results from dedicated MC studies of GF effects on images from gamma-ray initiated EAS for the MAGIC telescope site, where the GF strength is ~40 micro Tesla. The results from the MC studies suggest that GF effects degrade not only measurements of very low energy gamma-rays below ~100 GeV but also those at TeV-energies., Comment: minor text changes
Published: 2008
Full Text: View/download PDF

12. The MAGIC Project: Contributions to ICRC 2007

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J. K., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R. K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Cabras, G., Camara, M., Carmona, E., Chilingarian, A., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Delgado, C., Reyes, R. de los, De Lotto, B., De Maria, M., De Sabata, F., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., García-López, R. J., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Höhne, D., Hose, J., Hsu, C. C., Jacon, P., Jogler, T., Kosyra, R., Kranich, D., Kritzer, R., Laille, A., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., na-Wilhelmi, E. O, Otte, N., Oya, I., Paneque, D., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., Zandanel, F., Zanin, R., and Zapatero, J.
Subjects: Astrophysics
Abstract: The MAGIC Project: Contributions to ICRC 2007, Merida, Mexico. Contents pages for the Contribution on behalf of the MAGIC Collaboration to the 30th ICRC that took place in July 2007 in Merida, Mexico. The contents are in html form with clickable links to the papers that exist on the Astrophysics archive. We hope that this will make it easier to access the output of the conference in a systematic way. Comments on how useful this is/ how it could be improved should be sent to michela.demaria@iuav.it., Comment: HTML file with clickable links to papers
Published: 2007

13. Geomagnetic Field Effects on the Imaging Air Shower Cherenkov Technique

Author: Commichau, S. C., Biland, A., Kranich, D., Reyes, R. de los, Moralejo, A., and Sobczynska, D.
Subjects: Astrophysics
Abstract: Imaging Air Cherenkov Telescopes (IACTs) detect the Cherenkov light flashes of Extended Air Showers (EAS) triggered by very high energy (VHE) gamma-rays impinging on the Earth's atmosphere. Due to the overwhelming background from hadron induced EAS, the discrimination of the rare gamma-like events is rather difficult, in particular at energies below 100 GeV. The influence of the Geomagnetic Field (GF) on the EAS development can further complicate this discrimination and, in addition, also systematically affect the gamma efficiency and energy resolution of an IACT. Here we present the results from dedicated Monte Carlo (MC) simulations for the MAGIC telescope site. Additionally we show that measurements of sub-TeV gamma-rays from the Crab nebula are affected even for a low GF strength of less than 33 micro Tesla., Comment: Contribution to the 30th ICRC, Merida Mexico, July 2007 on behalf of the MAGIC Collaboration Changes: corrected typos, changed content (figure 1)
Published: 2007

14. MAGIC upper limits on the very high energy emission from GRBs

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R. K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Delgado, C., Reyes, R. de los, De Lotto, B., Domingo-Santamaria, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., Garcia-Lopez, R., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Hohne, D., Hose, J., and Hsu, C. C.
Subjects: Astrophysics
Abstract: The fast repositioning system of the MAGIC Telescope has allowed during its first data cycle, between 2005 and the beginning of year 2006, observing nine different GRBs as possible sources of very high energy gammas. These observations were triggered by alerts from Swift, HETE-II, and Integral; they started as fast as possible after the alerts and lasted for several minutes, with an energy threshold varying between 80 and 200 GeV, depending upon the zenith angle of the burst. No evidence for gamma signals was found, and upper limits for the flux were derived for all events, using the standard analysis chain of MAGIC. For the bursts with measured redshift, the upper limits are compatible with a power law extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due to the scattering in the Metagalactic Radiation Field (MRF)., Comment: 25 pages, 9 figures, final version accepted by ApJ. Changet title to "MAGIC upped limits on the VERY high energy emission from GRBs", re-organized chapter with description of observation, removed non necessaries figures, added plot of effective area depending on zenith angle, added an appendix explaining the upper limit calculation, added some references
Published: 2006
Full Text: View/download PDF

15. Discovery of VHE gamma-ray emission from 1ES1218+30.4

Author: MAGIC collaboration, Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartelt, M., Bartko, H., Bastieri, D., Bavikadi, S. R., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bretz, T., Britvitch, I., Camara, M., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Reyes, R. de los, De Lotto, B., Domingo-Santamaria, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Galante, N., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Hoehne, D., Hose, J., Jacon, P., Kalekin, O., Kranich, D., Laille, A., Lenisa, T., Liebing, P., and Lindfors, E.
Subjects: Astrophysics
Abstract: The MAGIC collaboration has studied the high peaked BL-Lac object 1ES1218+30.4 at a redshift z = 0.182, using the MAGIC imaging air Cherenkov telescope located on the Canary island of La Palma. A gamma-ray signal was observed with 6.4sigma significance. The differential energy spectrum for an energy threshold of 120GeV can be fitted by a simple power law yielding F_E(E) = (8.1+-2.1)*10^-7 (E/250GeV)^(-3.0+-0.4) TeV^-1 m^-2 s^-1. During the six days of observation in January 2005 no time variability on time scales of days was found within the statistical errors. The observed integral flux above 350GeV is nearly a factor two below the the upper limit reported by the Whipple Collaboration in 2003., Comment: 5 pages, 4 figures, submitted to ApJ
Published: 2006
Full Text: View/download PDF

16. Flux upper limit of gamma-ray emission by GRB050713a from MAGIC Telescope observations

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartelt, M., Bartko, H., Bastieri, D., Bavikadi, R., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bretz, T., Britvitch, I., Camara, M., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Reyes, R. de los, De Lotto, B., Domingo-Santamaria, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Galante, N., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Hohne, D., Hose, J., Jacon, P., Kalekin, O., Kranich, D., Laille, A., Lenisa, T., Liebing, P., Lindfors, E., Longo, F., Lopez, J., Lopez, M., Lorenz, E., Lucarelli, F., Majumdar, P., Maneva, G., Mannheim, K., Mariotti, M., Martinez, M., Mase, K., Mazin, D., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nilsson, K., Ona-Wilhelmi, E., Orduna, R., Otte, N., Oya, I., Paneque, D., Paoletti, R., Pasanen, M., Pascoli, D., Pauss, F., Pavel, N., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Prandini, E., Rico, J., Rhode, W., Riegel, B., Rissi, M., Robert, A., Rugamer, S., Saggion, A., Sanchez, A., Sartori, P., Scalzotto, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S., Sidro, N., Sillanpaa, A., Sobczynska, D., Stamerra, A., Stark, L. S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Tonello, N., Torres, A., Torres, D. F., Turini, N., Vankov, H., Vardanyan, A., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., and Zapatero, J.
Subjects: Astrophysics
Abstract: The long-duration GRB050713a was observed by the MAGIC Telescope, 40 seconds after the burst onset, and followed up for 37 minutes, until twilight. The observation, triggered by a SWIFT alert, covered energies above ~175 GeV. Using standard MAGIC analysis, no evidence for a gamma signal was found. As the redshift of the GRB was not measured directly, the flux upper limit, estimated by MAGIC, is still compatible with the assumption of an unbroken power-law spectrum extending from a few hundred keV to our energy range., Comment: 14 pages, 4 figures, submitted to ApJ
Published: 2006
Full Text: View/download PDF

17. FACT—The first Cherenkov telescope using a G-APD camera for TeV gamma-ray astronomy

Author: Anderhub, H., Backes, M., Biland, A., Boller, A., Braun, I., Bretz, T., Commichau, S., Commichau, V., Domke, M., Dorner, D., Gendotti, A., Grimm, O., von Gunten, H., Hildebrand, D., Horisberger, U., Köhne, J.-H., Krähenbühl, T., Kranich, D., Krumm, B., Lorenz, E., Lustermann, W., Mannheim, K., Neise, D., Pauss, F., Renker, D., Rhode, W., Rissi, M., Ribordy, M., Röser, U., Stark, L.S., Stucki, J.-P., Tibolla, O., Viertel, G., Vogler, P., Warda, K., and Weitzel, Q.
Published: 2011
Full Text: View/download PDF

18. Results of the prototype camera for FACT

Author: Anderhub, H., Backes, M., Biland, A., Boller, A., Braun, I., Bretz, T., Commichau, S., Commichau, V., Dorner, D., Gendotti, A., Grimm, O., von Gunten, H., Hildebrand, D., Horisberger, U., Köhne, J.-H., Krähenbühl, T., Kranich, D., Lorenz, E., Lustermann, W., Mannheim, K., Neise, D., Pauss, F., Renker, D., Rhode, W., Rissi, M., Ribordy, M., Röser, U., Stark, L.S., Stucki, J.-P., Tibolla, O., Viertel, G., Vogler, P., and Weitzel, Q.
Published: 2011
Full Text: View/download PDF

19. A G-APD based Camera for Imaging Atmospheric Cherenkov Telescopes

Author: Anderhub, H., Backes, M., Biland, A., Boller, A., Braun, I., Bretz, T., Commichau, S., Commichau, V., Dorner, D., Gendotti, A., Grimm, O., von Gunten, H., Hildebrand, D., Horisberger, U., Köhne, J.-H., Krähenbühl, T., Kranich, D., Lorenz, E., Lustermann, W., Mannheim, K., Neise, D., Pauss, F., Renker, D., Rhode, W., Rissi, M., Ribordy, M., Röser, U., Stark, L.S., Stucki, J.-P., Tibolla, O., Viertel, G., Vogler, P., and Weitzel, Q.
Published: 2011
Full Text: View/download PDF

20. Improving the performance of the single-dish Cherenkov telescope MAGIC through the use of signal timing

Author: Aliu, E., Anderhub, H., Antonelli, L.A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J.A., Bartko, H., Bastieri, D., Becker, J.K., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Bock, R.K., Bonnoli, G., Bordas, P., Borla Tridon, D., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Commichau, S., Contreras, J.L., Cortina, J., Costado, M.T., Covino, S., Curtef, V., Dazzi, F., De Angelis, A., De Cea del Pozo, E., de los Reyes, R., De Lotto, B., De Maria, M., De Sabata, F., Delgado Mendez, C., Dominguez, A., Dorner, D., Doro, M., Elsässer, D., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M.V., Font, L., Galante, N., García López, R.J., Garczarczyk, M., Gaug, M., Goebel, F., Hadasch, D., Hayashida, M., Herrero, A., Höhne, D., Hose, J., Hsu, C.C., Huber, S., Jogler, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Meyer, M., Miranda, J.M., Mirzoyan, R., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Otte, N., Oya, I., Paoletti, R., Paredes, J.M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R.G., Perez-Torres, M.A., Persic, M., Peruzzo, L., Piccioli, A., Prada, F., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T.Y., Salvati, M., Sanchez-Conde, M., Sartori, P., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S.N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L.S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Tluczykont, M., Torres, D.F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R.M., Wittek, W., Zabalza, V., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2009
Full Text: View/download PDF

21. FADC signal reconstruction for the MAGIC telescope

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J.A., Bartko, H., Bastieri, D., Becker, J., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R.K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J.A., Commichau, S., Contreras, J.L., Cortina, J., Costado, M.T., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Delgado, C., de los Reyes, R., De Lotto, B., Domingo-Santamaría, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M.V., Font, L., Fuchs, M., Galante, N., García-López, R.J., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Höhne, D., Hose, J., Hsu, C.C., Jacon, P., Jogler, T., Kosyra, R., Kranich, D., Kritzer, R., Laille, A., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J.M, Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oña-Wilhelmi, E., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J.M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Puchades, N., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S.N., Sidro, N., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L.S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Torres, D.F., Turini, N., Vankov, H., Vitale, V., Wagner, R.M., Wibig, T., Wittek, W., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2008
Full Text: View/download PDF

22. Implementation of the Random Forest method for the Imaging Atmospheric Cherenkov Telescope MAGIC

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J.A., Bartko, H., Bastieri, D., Becker, J., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R.K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J.A., Commichau, S., Contreras, J.L., Cortina, J., Costado, M.T., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Delgado, C., de los Reyes, R., De Lotto, B., Domingo-Santamaría, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M.V., Font, L., Fuchs, M., Galante, N., García-López, R.J., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Höhne, D., Hose, J., Huber, S., Hsu, C.C., Jacon, P., Jogler, T., Kosyra, R., Kranich, D., Kritzer, R., Laille, A., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J.M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oña-Wilhelmi, E., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J.M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Puchades, N., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T.Y., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S.N., Sidro, N., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L.S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Torres, D.F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R.M., Wibig, T., Wittek, W., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2008
Full Text: View/download PDF

23. Unfolding of differential energy spectra in the MAGIC experiment

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J.A., Bartko, H., Bastieri, D., Becker, J., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R.K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J.A., Commichau, S., Contreras, J.L., Cortina, J., Costado, M.T., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., Delgado, C., de los Reyes, R., De Lotto, B., Domingo-Santamaría, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M.V., Font, L., Fuchs, M., Galante, N., García-López, R.J., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Höhne, D., Hose, J., Hsu, C.C., Jacon, P., Jogler, T., Kosyra, R., Kranich, D., Kritzer, R., Laille, A., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J.M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oña-Wilhelmi, E., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J.M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Puchades, N., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S.N., Sidro, N., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L.S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Torres, D.F., Turini, N., Vankov, H., Vitale, V., Wagner, R.M., Wibig, T., Wittek, W., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2007
Full Text: View/download PDF

24. Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy

Author: Acciari, V. A., Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., Bradbury, S. M., Buckley, J. H., Bugaev, V., Butt, Y., Byrum, K., Cannon, A., Celik, O., Cesarini, A., Chow, Y. C., Ciupik, L., Cogan, P., Cui, W., Dickherber, R., Fegan, S. J., Finley, J. P., Fortin, P., Fortson, L, Furniss, A., Gall, D., Gillanders, G. H., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Horan, D., Hui, C. M., Humensky, T. B., Imran, A., Kaaret, P., Karlsson, N., Kieda, D., Kildea, J., Konopelko, A., Krawczynski, H., Krennrich, F., Lang, M. J., LeBohec, S., Maier, G., McCann, A., McCutcheon, M., Millis, J., Moriarty, P., Ong, R. A., Otte, A. N., Pandel, D., Perkins, J. S., Petry, D., Pohl, M., Quinn, J., Ragan, K., Reyes, L C., Reynolds, P. T., Roache, E., Rose, H. J., Schroedter, M., Sembroski, G. H., Smith, A W., Swordy, S. P., Theiling, M., Toner, J. A, Vartotta, A., Vincent, S., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Williams, D. A., Wissel, S., Wood, M., Walker, R. C., Davies, F., Hardee, P. E., Junor, W., Ly, C., Aharonian, F., Akhperjanian, A. G., Anton, G., de Almeida, U. Barres, Bazer-Bachi, A. R., Becherini, Y., Behera, B., Bernlöhr, K., Bochow, A., Boisson, C., Bolmont, J., Borrel, V., Brucker, J., Brun, F., Brun, P., Bühler, R., Bulik, T., Büsching, I., Boutelier, T., Chadwick, P. M., Charbonnier, A., Chaves, R. C. G., Cheesebrough, A., Chounet, L-M., Clapson, A. C., Coignet, G., Dalton, M., Daniel, M. K., Davids, I. D., Degrange, B., Deil, C., Dickinson, H. J., Djannati-Ataï, A., Domainko, W., OʼC. Drury, L, Dubois, F., Dubus, G., Dyks, J., Dyrda, M., Egberts, K., Emmanoulopoulos, D., Espigat, P., Farnier, C., Feinstein, F., Fiasson, A., Förster, A, Fontaine, G., Füling, M., Gabici, S., Gallant, Y. A., Gérard, L, Gerbig, D., Giebels, B., Glicenstein, J. F., Glück, B., Goret, P., Göhring, D., Hauser, D., Hauser, M., Heinz, S., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J. A, Hoffmann, A., Hofmann, W., Holleran, M., Hoppe, S., Horns, D., Jacholkowska, A., de Jager, O. C., Jahn, C., Jung, I., Katarzynski, K., Katz, U., Kaufmann, S., Kendziorra, E., Kerschhaggl, M., Khangulyan, D., Khélifi, B., Keogh, D., Kluzniak, W., Kneiske, T., Komin, Nu., Kosack, K., Lamanna, G., Lenain, J.-P., Lohse, T., Marandon, V., Martin, J. M., Martineau-Huynh, O., Marcowith, A., Maurin, D., L McComb, T. J., Medina, M. C., Moderski, R., Moulin, E., Naumann-Godo, M., de Naurois, M., Nedbal, D., Nekrassov, D., Nicholas, B., Niemiec, J., Nolan, S. J., Ohm, S., Olive, J.-F., de Oña Wilhelmi, E., Orford, K. J., Ostrowski, M., Panter, M., Arribas, M. Paz, Pedaletti, G., Pelletier, G., Petrucci, P.-O., Pita, S., Pühlhofer, G., Punch, M., Quirrenbach, A., Raubenheimer, B. C., Raue, M., Rayner, S. M., Renaud, M., Rieger, F., Ripken, J., Rob, L, Rosier-Lees, S., Rowell, G., Rudak, B., Rulten, C. B., Ruppel, J., Sahakian, V., Santangelo, A., Schlickeiser, R., Schöck, F. M., Schröder, R., Schwanke, U., Schwarzburg, S., Schwemmer, S., Shalchi, A, Sikora, M., Skilton, J. L, Sol, H., Spangler, D., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Superina, G., Szostek, A, Tam, P. H., Tavemet, J.-P., Terrier, R., Tibolla, O., Tluczykont, M., van Eldik, C., Vasileiadis, G., Venter, C., Venter, L, Vialle, J. P., Vincent, P., Vivier, M., Völk, H. J., Volpe, F., Wagner, S. J., Ward, M., Zdziarski, A. A., Zech, A., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., González, J. Becerra, Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Biland, A, Bock, R. K., Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Commichau, S., Contreras, J. L, Cortina, J., Costado, M. T., Covino, S., Curtef, V., Dazzi, F., De Angelis, A., De Cea del Pozo, E., Mendez, C. Delgado, De los Reyes, R., De Lotto, B., De Maria, M., De Sabata, F., Dominguez, A., Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., Garcia López, R. J., Garczarczyk, M., Gaug, M., Goebel, F., Hadasch, D., Hayashida, M., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hsu, C. C., Jogler, T., Kranich, D., Barbera, A. La, Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M, Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L, Mariotti, M., Martinez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L, Prada, F., Prandini, E., Puchades, N., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sanchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L S., Takalo, L, Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2009

25. Physics and astrophysics with a ground-based gamma-ray telescope of low energy threshold

Author: Fort, J. Albert i, Armada, A., Baixeras, C., Bartko, H., Bastieri, D., Bednarek, W., Bigongiari, C., Biland, A., Bisesi, E., Blanch, O., Bock, R.K., Bretz, T., Chilingarian, A., Ciprini, S., Commichau, S., Contreras, J.L., Cortina, J., Danielyan, V., Dazzi, F., De Angelis, A., De Lotto, B., Domingo, E., Dorner, D., Doro, M., Epler, O., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M.V., Font, L., Galante, N., Garczarczyk, M., Gaug, M., Gebauer, J., Giannitrapani, R., Giller, M., Goebel, F., Hengstebeck, T., Jacon, P., de Jager, O.C., Kalekin, O., Kranich, D., Laille, A., Lenisa, T., Lindfors, E., Longo, F., López, M., López, J., Lorenz, E., Lucarelli, F., Mannheim, K., Mariotti, M., Martinez, M., Mase, K., Mazin, D., Merck, C., Merck, M., Meucci, M., Meyer, M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Oña-Wilhelmi, E., Orduña, R., Otte, N., Paneque, D., Paoletti, R., Pasanen, M., Pascoli, D., Pauss, F., Pavel, N., Pegna, R., Peruzzo, L., Piccioli, A., Pin, M., de los Reyes, R., Rico, J., Renker, D., Robert, A., Rossato, G., Saggion, A., Sánchez, A., Sartori, P., Scalzotto, V., Schweizer, T., Shayduk, M., Shinozaki, K., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L., Takalo, L., Teshima, M., Tonello, N., Torres, A., Turini, N., Viertel, G., Vitale, V., Volkov, S., Wagner, R., Wibig, T., and Wittek, W.
Published: 2005
Full Text: View/download PDF

26. Observation of Pulsed γ-Rays Above 25 GeV from the Crab Pulsar with MAGIC

Author: Aliu, E., Anderhub, H., Antonelli, L A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Bigongiari, C., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Curtef, V., Dazzi, F., De Angelis, A., del Pozo, E. De Cea, Reyes, R. de los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Dominguez, A., Dorner, D., Doro, M., Elsässer, D., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Fonseca, M. V., Font, L, Galante, N., Garcia Lopez, R. J., Garczarczyk, M., Gaug, M., Goebel, F., Hadasch, D., Hayashida, M., Herrero, A., Höhne, D., Hose, J., Hsu, C. C., Huber, S., Jogler, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Otte, N., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Piccioli, A., Prada, F., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, J A., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., SanchezConde, M., Sartori, P., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Tluczykont, M., Torres, D. F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R. M., Wittek, W., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., de jager, O. C., and Wilheimi, E. de Ona
Published: 2008
Full Text: View/download PDF

27. Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?

Author: Albert, J., Aliu, E., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Bigongiari, C., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Curtef, V., Dazzi, F., De Angelis, A., De Cea del Pozo, E., de los Reyes, R., De totto, B., De Maria, M., De Sabata, F., Delgado Mendez, C., Dominguez, A., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., García López, R. J., Garczarczyk, M., Gaug, M., Goebel, F., Hayashida, M., Herrero, A., Höhne, D., Hose, J., Hsu, C. C., Huber, S., Jogler, T., Kneiske, T. M., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Piccioli, A., Prada, F., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sanchez-Conde, M., Sartori, P., Satalecka, K., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Ttuczykont, M., Torres, D. F., Turini, N., Vankov, H., Vitale, A. Venturing V., Wagner, R. M., Wittek, W., Zabalza, V., Zandanel, F., Zanin, R., and Zapatero, J.
Published: 2008
Full Text: View/download PDF

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

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartelt, M., Bartko, H., Bastieri, D., Bavikadi, S. R., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., de los Reyes, R., De Lotto, B., Domingo-Santamaría, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Höhne, D., Hose, J., Hsu, C. C., Isar, P. G., Jacon, P., Kalekin, O., Kosyra, R., Kranich, D., Laatiaoui, M., Laille, A., Lenisa, T., Ljebing, P., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Lucarelli, F., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mase, K., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nilsson, K., Oña-Wilhelmi, E., Orduña, R., Otte, N., Oya, I., Paneque, D., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pavel, N., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Poller, M., Pooley, G., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Riegel, B., Rissi, M., Robert, A., Romero, G. E., Rügamer, S., Saggion, A., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L. S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Tonello, N., Torres, A., Torres, D. F., Turini, N., Vankov, H., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., Zanin, R., and Zapatero, J.
Published: 2006

29. Characterization of 13 and 30 μm thick hydrogenated amorphous silicon diodes deposited over CMOS integrated circuits for particle detection application

Author: Despeisse, M., Anelli, G., Commichau, S., Dissertori, G., Garrigos, A., Jarron, P., Miazza, C., Moraes, D., Shah, A., Wyrsch, N., and Viertel, G.
Published: 2004
Full Text: View/download PDF

30. Observations of Markarian 421 with the MAGIC Telescope

Author: Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bock, R. K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., De Los Reyes, R., De Lotto, B., Domingo-Santamaría, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Höhne, D., Hose, J., Hsu, C. C., Jacon, P., Jogler, T., Kalekin, O., Kosyra, R., Kranich, D., Kritzer, R., Laatiaoui, M., Laille, A., Liebing, P., Lindfors, E., Lombardi, S., Longo, F., López, J., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nilsson, K., Ninkovic, J., Oña-Wilhelmi, E., Orduña, R., Otte, N., Oya, I., Paneque, D., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Poller, M., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L. S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Tonello, N., Torres, A., Torres, D. F., Turini, N., Vankov, H., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., Zanin, R., Zapatero, J., J., Albert, E., Aliu, H., Anderhub, P., Antoranz, A., Armada, M., Asensio, C., Baixera, J. A., Barrio, H., Bartko, D., Bastieri, J., Becker, W., Bednarek, K., Berger, C., Bigongiari, A., Biland, R. K., Bock, P., Borda, V., Bosch Ramon, T., Bretz, I., Britvitch, M., Camara, E., Carmona, A., Chilingarian, S., Ciprini, J. A., Coarasa, S., Commichau, J. L., Contrera, J., Cortina, V., Curtef, V., Danielyan, F., Dazzi, Angelis, A., Los, R., Lotto, B., E., Domingo Santamar\ia, D., Dorner, M., Doro, M., Errando, M., Fagiolini, D., Ferenc, E., Fernandez, R., Firpo, J., Flix, M. V., Fonseca, L., Font, M., Fuch, N., Galante, M., Garczarczyk, M., Gaug, M., Giller, F., Goebel, D., Hakobyan, M., Hayashida, T., Hengstebeck, D., H\ohne, J., Hose, C. C., Hsu, P., Jacon, T., Jogler, O., Kalekin, R., Kosyra, D., Kranich, R., Kritzer, M., Laatiaoui, A., Laille, P., Liebing, E., Lindfor, S., Lombardi, Longo, Francesco, J., Lopez, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, K., Mannheim, O., Mansutti, M., Mariotti, M., Mart\inez, D., Mazin, C., Merck, M., Meucci, M., Meyer, J. M., Miranda, R., Mirzoyan, S., Mizobuchi, A., Moralejo, K., Nilsson, J., Ninkovic, E., O\~na Wilhelmi, R., Ordu\~na, N., Otte, I., Oya, D., Paneque, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, R., Pegna, M., Persic, L., Peruzzo, A., Piccioli, M., Poller, E., Prandini, A., Raymer, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., R\ugamer, A., Saggion, A., Sanchez, P., Sartori, V., Scalzotto, V., Scapin, R., Schmitt, T., Schweizer, M., Shayduk, K., Shinozaki, S. N., Shore, N., Sidro, A., Sillanp\a\a, D., Sobczynska, A., Stamerra, L. S., Stark, L., Takalo, P., Temnikov, D., Tescaro, M., Teshima, N., Tonello, A., Torre, D. F., Torre, N., Turini, H., Vankov, V., Vitale, R. M., Wagner, T., Wibig, W., Wittek, R., Zanin, and J., Zapatero
Subjects: Astrophysics::High Energy Astrophysical Phenomena, EXTRAGALACTIC BACKGROUND LIGHT, ACTIVE GALAXY MARKARIAN-421, TEV BLAZAR MARKARIAN-421, SPITZER-SPACE-TELESCOPE, DIFFUSE INFRARED LIGHT, HIGH-ENERGY PHOTONS, COBE DIRBE MAPS, BL-LAC OBJECTS, 1ST DETECTIONS, GAMMA-RAYS, Astrophysics, gamma ray astronomy, Cosmic rays, IMAGING CHERENKOV DETECTOR, Power law, individual (Markarian 421) [BL Lacertae objects], law.invention, law, Blazar, Physics, Attenuation, BL Lacertae Objects: Individual: Name: Markarian 421 [Galaxies], observations [gamma rays], Quiescent state, Astronomy and Astrophysics, Synchrotron, Galaxies: BL Lacertae Objects: Individual: Name: Markarian 421, Extragalactic background light, Space and Planetary Science, Data analysis, Spectral energy distribution, Electrónica, Física nuclear, Gamma Rays: Observations, Electricidad
Abstract: The MAGIC telescope took data of very high energy ?-ray emission from the blazar Markarian 421 (Mrk 421) between 2004 November and 2005 April. We present a combined analysis of data samples recorded under different observational conditions, down to ?-ray energies of 100 GeV. The flux was found to vary between 0.5 and 2 crab (integrated above 200 GeV), considered a low state when compared to known data. Although the flux varied day by day, no short-term variability was observed, although there is some indication that not all nights show an equally quiescent state. The results at higher energies were found to be consistent with previous observations. A clear correlation is observed between ?-ray and X-ray fluxes, whereas no significant correlation between ?-ray and optical data is seen. The spectral energy distribution between 100 GeV and 3 TeV shows a clear deviation from a power law, more clearly and at lower flux than previous observations at higher energies. The deviation persists after correcting for the effect of attenuation by the extragalactic background light, and most likely is source-inherent. There is a rather clear indication of an inverse Compton peak around 100 GeV. The spectral energy distribution of Mrk 421 can be fitted by a one-zone synchrotron self-Compton model, suggesting once again a leptonic origin of the very high energy ?-ray emission from this blazar. ispartof: Astrophysical Journal vol:663 issue:1 pages:125-138 status: published
Published: 2007
Full Text: View/download PDF

31. Simultaneous Multiwavelength observation of Mkn 501 in a low state in 2006

Author: Anderhub, H., Antonelli, L. A., Bednarek, W., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Berger, K., Rügamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sanchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Bernardini, E., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Biland, A., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Tluczykont, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Wittek, W., Bock, R. K., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Sato, R., Ushio, M., Kataoka, J., Madejski, G., Takahashi, T., MAGIC Collaboration, Bonnoli, G., Bordas, P., Tridon, D. Borla, Bosch-Ramon, V., Bose, D., Antoranz, P., Braun, I., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Backes, M., Curtef, V., Dazzi, F., De Angelis, A., Pozo, E. De Cea del, Reyes, R. de los, De Lotto, B., De Maria, M., De Sabata, F., Mendez, C. Delgado, Dominguez, A., Baixeras, C., Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., Balestra, S., López, R. J. García, Garczarczyk, M., Gaug, M., Goebel, F., Hadasch, D., Hayashida, M., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Barrio, J. A., Hsu, C. C., Jogler, T., Kranich, D., Barbera, A. La, Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., López, M., Bastieri, D., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., González, J. Becerra, Meyer, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldón, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Becker, J. K., Otte, N., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., H., Anderhub, L. A., Antonelli, P., Antoranz, M., Backe, C., Baixera, S., Balestra, J. A., Barrio, D., Bastieri, J. B., Gonzalez, J. K., Becker, W., Bednarek, K., Berger, E., Bernardini, A., Biland, R. K., Bock, G., Bonnoli, P., Borda, D. B., Tridon, V., Bosch Ramon, D., Bose, I., Braun, T., Bretz, I., Britvitch, M., Camara, E., Carmona, S., Commichau, J. L., Contrera, J., Cortina, M. T., Costado, S., Covino, V., Curtef, F., Dazzi, A. D., Angeli, E. D., del Pozo, R. d., los Reye, B. D., Lotto, M. D., Maria, F. D., Sabata, C. D., Mendez, A., Dominguez, D., Dorner, M., Doro, D., Elsaesser, M., Errando, D., Ferenc, E., Fernandez, R., Firpo, M. V., Fonseca, L., Font, N., Galante, R. J. G., Lopez, M., Garczarczyk, M., Gaug, F., Goebel, D., Hadasch, M., Hayashida, A., Herrero, D., Hildebrand, D., Hohne Monch, J., Hose, C. C., Hsu, T., Jogler, D., Kranich, A. L., Barbera, A., Laille, E., Leonardo, E., Lindfor, S., Lombardi, Longo, Francesco, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, M., Mariotti, M., Martinez, D., Mazin, M., Meucci, M., Meyer, J. M., Miranda, R., Mirzoyan, H., Miyamoto, J., Moldon, M., Mole, A., Moralejo, D., Nieto, K., Nilsson, J., Ninkovic, N., Otte, I., Oya, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, G., Pegna, M. A., Perez Torre, M., Persic, L., Peruzzo, F., Prada, E., Prandini, N., Puchade, I., Reichardt, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., Rugamer, A., Saggion, T. Y., Saito, M., Salvati, M., Sanchez Conde, K., Satalecka, V., Scalzotto, V., Scapin, T., Schweizer, M., Shayduk, S. N., Shore, N., Sidro, A., Sierpowska Bartosik, A., Sillanpaa, J., Sitarek, D., Sobczynska, F., Spanier, A., Stamerra, L. S., Stark, L., Takalo, F., Tavecchio, P., Temnikov, D., Tescaro, M., Teshima, M., Tluczykont, D. F., Torre, N., Turini, H., Vankov, R. M., Wagner, W., Wittek, V., Zabalza, F., Zandanel, R., Zanin, J., Zapatero, R., Sato, M., Ushio, J., Kataoka, G., Madejski, T., Takahashi, and Universitat de Barcelona
Subjects: GAMMA-RAY OBSERVATION, Photon, PARTICLE-ACCELERATION, Flux, Astrophysics, Electron, 01 natural sciences, Spectral line, Raigs gamma, Observacions astronòmiques, TEV BLAZAR, MAGIC (telescope), 010303 astronomy & astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Very High Energy Gamma-ray Astronomy, MAGIC telescope, Active Galactic Nuclei, Lorentz factor, symbols, Electrónica, Física nuclear, Raigs X, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, Astronomical observations, ACTIVE GALACTIC NUCLEI, Cosmology and Nongalactic Astrophysics (astro-ph.CO), GALAXY MARKARIAN-421, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, BL-LACERTAE OBJECTS, HIGH-ENERGY EMISSION, X-RAY, LAC OBJECTS, PHYSICAL PARAMETERS, symbols.namesake, 0103 physical sciences, X-rays, Blazar, 010308 nuclear & particles physics, Gamma rays, Astronomy and Astrophysics, Galaxies, Galàxies, Crab Nebula, Space and Planetary Science, ddc:520
Abstract: 著者人数：149名, Accepted: 2009-09-28, 資料番号: SA1000976000
Published: 2009
Full Text: View/download PDF

32. PERIODIC VERY HIGH ENERGY gamma-RAY EMISSION FROM LS I+61 degrees 303 OBSERVED WITH THE MAGIC TELESCOPE RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Bigongiari, C, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, de los Reyes, R, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hayashida, M, Herrero, A, Hohne, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2009

33. SIMULTANEOUS MULTIWAVELENGTH OBSERVATIONS OF MARKARIAN 421 DURING OUTBURST

Author: Acciari, Va, Aliu, E, Aune, T, Beilicke, M, Benbow, W, Bottcher, M, Bradbury, Sm, Buckley, Jh, Bugaev, V, Butt, Y, Cannon, A, Celik, O, Cesarini, A, Chow, Yc, Ciupik, L, Cogan, P, Colin, P, Cui, W, Dickherber, R, Duke, C, Falcone, Ad, Fegan, Sj, Finley, Jp, Finnegan, G, Fortin, P, Fortson, L, Furniss, A, Gall, D, Gillanders, Gh, Grube, J, Guenette, R, Gyuk, G, Hanna, D, Holder, J, Horan, D, Hui, Cm, Humensky, Tb, Kaaret, P, Karlsson, N, Kertzman, M, Kieda, D, Kildea, J, Konopelko, A, Krawczynski, H, Krennrich, F, Lang, Mj, Lebohec, S, Maier, G, Mccann, A, Millis, J, Moriarty, P, Ong, Ra, Otte, An, Pandel, D, Perkins, Js, Pichel, A, Pohl, M, Quinn, J, Ragan, K, Reyes, Lc, Reynolds, Pt, Roache, E, Rose, Hj, Schroedter, M, Sembroski, Gh, Smith, Aw, Steele, D, Swordy, Sp, Theiling, M, Toner, Ja, Varlotta, A, Vincent, S, Wakely, Sp, Ward, Je, Weekes, Tc, Weinstein, A, Weisgarber, T, Williams, Da, Wissel, S, Zitzer, B, Perez, Id, Ibarra, A, Anderhub, Prh, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Balestra, S, Barrio, Ja, Bastieri, D, Gonzalez, Jb, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Tridon, Db, Bosch Ramon, V, Bose, D, Braun, I, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Carosi, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, DE ANGELIS, Alessandro, Del Pozo ED, Mendez, Cd, De Los Reyes, R, DE LOTTO, Barbara, De Maria, M, De Sabata, F, Dominguez, A, Dorner, D, Doro, M, Elsaesser, D, Errando, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rj, Garczarczyk, M, Gaug, M, Goebel, F, Hadasch, D, Hayashida, M, Herrero, A, Hildebrand, D, Hohne Monch, D, Hose, J, Hsu, Cc, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Miranda, Jm, Mirzoyan, R, Miyamoto, H, Moldon, J, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Orito, R, Oya, I, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Prada, F, Prandini, E, Puchades, N, Reichardt, I, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shore, Sn, Sidro, N, Sierpowska Bartosik, A, Silanpaa, A, Sitarek, J, Sobczynska, D, Spanier, F, Spiro, S, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Wagner, Rm, Zabalza, V, Zandanel, F, Zanin, R, Zapatero, J., V. A., Acciari, E., Aliu, T., Aune, M., Beilicke, W., Benbow, M., Bottcher, S. M., Bradbury, J. H., Buckley, V., Bugaev, Y., Butt, A., Cannon, O., Celik, A., Cesarini, Y. C., Chow, L., Ciupik, P., Cogan, P., Colin, W., Cui, R., Dickherber, C., Duke, A. D., Falcone, S. J., Fegan, J. P., Finley, G., Finnegan, P., Fortin, L., Fortson, A., Furni, D., Gall, G. H., Gillander, J., Grube, R., Guenette, G., Gyuk, D., Hanna, J., Holder, D., Horan, C. M., Hui, T. B., Humensky, P., Kaaret, N., Karlsson, M., Kertzman, D., Kieda, J., Kildea, A., Konopelko, H., Krawczynski, F., Krennrich, M. J., Lang, S., Lebohec, G., Maier, A., Mccann, J., Milli, P., Moriarty, R. A., Ong, A. N., Otte, D., Pandel, J. S., Perkin, A., Pichel, M., Pohl, J., Quinn, K., Ragan, L. C., Reye, P. T., Reynold, E., Roache, H. J., Rose, M., Schroedter, G. H., Sembroski, A. W., Smith, D., Steele, S. P., Swordy, M., Theiling, J. A., Toner, A., Varlotta, S., Vincent, S. P., Wakely, J. E., Ward, T. C., Weeke, A., Weinstein, T., Weisgarber, D. A., William, S., Wissel, B., Zitzer, I. D., Perez, A., Ibarra, P. R. H., Anderhub, L. A., Antonelli, P., Antoranz, M., Backe, C., Baixera, S., Balestra, J. A., Barrio, D., Bastieri, J. B., Gonzalez, J. K., Becker, W., Bednarek, K., Berger, E., Bernardini, A., Biland, R. K., Bock, G., Bonnoli, P., Borda, D. B., Tridon, V., Bosch Ramon, D., Bose, I., Braun, T., Bretz, I., Britvitch, M., Camara, E., Carmona, A., Carosi, S., Commichau, J. L., Contrera, J., Cortina, M. T., Costado, S., Covino, V., Curtef, F., Dazzi, A. D., Angeli, E. D., Del Pozo, C. D., Mendez, R. D., Los Reye, B. D., Lotto, M. D., Maria, F. D., Sabata, A., Dominguez, D., Dorner, M., Doro, D., Elsaesser, M., Errando, D., Ferenc, E., Fernandez, R., Firpo, M. V., Fonseca, L., Font, N., Galante, R. J., Lopez, M., Garczarczyk, M., Gaug, F., Goebel, D., Hadasch, M., Hayashida, A., Herrero, D., Hildebrand, D., Hohne Monch, J., Hose, C. C., Hsu, T., Jogler, D., Kranich, A. L., Barbera, A., Laille, E., Leonardo, E., Lindfor, S., Lombardi, Longo, Francesco, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, M., Mariotti, M., Martinez, D., Mazin, M., Meucci, J. M., Miranda, R., Mirzoyan, H., Miyamoto, J., Moldon, M., Mole, A., Moralejo, D., Nieto, K., Nilsson, J., Ninkovic, R., Orito, I., Oya, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, R. G., Pegna, M. A., Perez Torre, M., Persic, L., Peruzzo, F., Prada, E., Prandini, N., Puchade, I., Reichardt, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., Rugamer, A., Saggion, T. Y., Saito, M., Salvati, M., Sanchez Conde, K., Satalecka, V., Scalzotto, V., Scapin, T., Schweizer, M., Shayduk, S. N., Shore, N., Sidro, A., Sierpowska Bartosik, A., Silanpaa, J., Sitarek, D., Sobczynska, F., Spanier, S., Spiro, A., Stamerra, L. S., Stark, L., Takalo, F., Tavecchio, P., Temnikov, D., Tescaro, M., Teshima, M., Tluczykont, D. F., Torre, N., Turini, H., Vankov, R. M., Wagner, V., Zabalza, F., Zandanel, R., Zanin, J., Zapatero, and Universitat de Barcelona
Subjects: bl lacertae objects: individual (markarian 421), 01 natural sciences, law.invention, ENERGY, Raigs gamma, ACTIVE GALAXY MARKARIAN-421, law, Observacions astronòmiques, RAY SPECTRAL VARIABILITY, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Very High Energy Gamma-ray Astronomy, MAGIC telescope, Active Galactic Nuclei, Astrophysics::Instrumentation and Methods for Astrophysics, CORRELATED VARIABILITY, TEV PHOTONS, Wavelength, Electrónica, Física nuclear, Raigs X, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astronomical observations, GALACTIC NUCLEI, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, FOS: Physical sciences, Telescope, 0103 physical sciences, X-rays, Blazar, x-rays: galaxies, XMM-NEWTON, 010308 nuclear & particles physics, Gamma rays, GAMMA-RAYS, Astronomy, Spectral density, Astronomy and Astrophysics, radiation mechanisms: non-thermal, Galaxies, Galàxies, MAGIC TELESCOPE, RADIATION, 13. Climate action, Space and Planetary Science, Satellite, gamma rays: observations
Abstract: 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-ray data using the XMM-Newton satellite, while the gamma-ray data were obtained utilizing three imaging atmospheric Cerenkov telescopes, the Whipple 10m telescope and VERITAS, both based in Arizona, as well as the MAGIC telescope, based on La Palma in the Canary Islands. The coordinated effort between the gamma-ray groups allowed for truly simultaneous data in UV/X-ray/gamma-ray wavelengths during a significant portion of the XMM-Newton observations. This simultaneous coverage allowed for a reliable search for correlations between UV, X-ray and gamma-ray variability over the course of the observations. Investigations of spectral hysteresis and modeling of the spectral energy distributions are also presented., Comment: 27 pages, 5 figures, Accepted for publication in The Astrophysical Journal
Published: 2009
Full Text: View/download PDF

34. MAGIC observations of PG 1553+113 during a multiwavelength campaign in July 2006 RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berdyugin, A, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Danielyan, V, Dazzi, F, De Angelis, A, Delgado, C, Reyes, Rd, De Lotto, B, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Fuchs, M, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Herrero, A, Hohne, D, Hose, J, Hsu, Cc, Huber, S, Jacon, P, Jogler, T, Kosyra, R, Kranich, D, Kritzer, R, Laille, A, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Persic, M, Peruzzo, L, Piccioli, A, Prandini, E, Puchades, N, Raymers, A, Rico, J, Rhode, W, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wibig, T, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2009

35. PERIODIC VERY HIGH ENERGY gamma-RAY EMISSION FROM LS I+61 degrees 303 OBSERVED WITH THE MAGIC TELESCOPE

Author: Albert, J., Aliu, E., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Bigongiari, C., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Bosch Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Curtef, V., Dazzi, F., Angelis, A. D., del Pozo, E. D., los Reyes, R. d., Lotto, B. D., Maria, M. D., Sabata, F. D., Mendez, C. D., Dominguez, A., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., Lopez, R. J. G., Garczarczyk, M., Gaug, M., Goebel, F., Hayashida, M., Herrero, A., Hohne, D., Hose, J., Hsu, C. C., Huber, S., Jogler, T., Kranich, D., Barbera, A. L., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, Francesco, Lopez, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez Torres, M. A., Persic, M., Peruzzo, L., Piccioli, A., Prada, F., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribo, M., Rico, J., Rissi, M., Robert, A., Rugamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sanchez Conde, M., Sartori, P., Satalecka, K., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sierpowska Bartosik, A., Sillanpaa, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Tluczykont, M., Torres, D. F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R. M., Wittek, W., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., J., Albert, E., Aliu, H., Anderhub, L. A., Antonelli, P., Antoranz, M., Backe, C., Baixera, J. A., Barrio, H., Bartko, D., Bastieri, J. K., Becker, W., Bednarek, K., Berger, E., Bernardini, C., Bigongiari, A., Biland, R. K., Bock, G., Bonnoli, P., Borda, V., Bosch Ramon, T., Bretz, I., Britvitch, M., Camara, E., Carmona, A., Chilingarian, S., Commichau, J. L., Contrera, J., Cortina, M. T., Costado, S., Covino, V., Curtef, F., Dazzi, A. D., Angeli, E. D., del Pozo, R. d., los Reye, B. D., Lotto, M. D., Maria, F. D., Sabata, C. D., Mendez, A., Dominguez, D., Dorner, M., Doro, M., Errando, M., Fagiolini, D., Ferenc, E., Fernandez, R., Firpo, M. V., Fonseca, L., Font, N., Galante, R. J. G., Lopez, M., Garczarczyk, M., Gaug, F., Goebel, M., Hayashida, A., Herrero, D., Hohne, J., Hose, C. C., Hsu, S., Huber, T., Jogler, D., Kranich, A. L., Barbera, A., Laille, E., Leonardo, E., Lindfor, S., Lombardi, Longo, Francesco, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, M., Mariotti, M., Martinez, D., Mazin, M., Meucci, M., Meyer, J. M., Miranda, R., Mirzoyan, S., Mizobuchi, M., Mole, A., Moralejo, D., Nieto, K., Nilsson, J., Ninkovic, N., Otte, I., Oya, M., Panniello, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, R. G., Pegna, M. A., Perez Torre, M., Persic, L., Peruzzo, A., Piccioli, F., Prada, E., Prandini, N., Puchade, A., Raymer, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., Rugamer, A., Saggion, T. Y., Saito, M., Salvati, M., Sanchez Conde, P., Sartori, K., Satalecka, V., Scalzotto, V., Scapin, R., Schmitt, T., Schweizer, M., Shayduk, K., Shinozaki, S. N., Shore, N., Sidro, A., Sierpowska Bartosik, A., Sillanpaa, D., Sobczynska, F., Spanier, A., Stamerra, L. S., Stark, L., Takalo, F., Tavecchio, P., Temnikov, D., Tescaro, M., Teshima, M., Tluczykont, D. F., Torre, N., Turini, H., Vankov, A., Venturini, V., Vitale, R. M., Wagner, W., Wittek, V., Zabalza, F., Zandanel, R., Zanin, and J., Zapatero
Subjects: Very High Energy Gamma-ray Astronomy, MAGIC telescope, Gamma-ray Binaries, gamma ray astronomy, Cosmic rays, IMAGING CHERENKOV DETECTOR
Abstract: The MAGIC collaboration has recently reported the discovery of gamma-ray emission from the binary system LS I +61 degrees 303 in the TeV energy region. Here we present new observational results on this source in the energy range between 300 GeV and 3 TeV. In total, 112 hr of data were taken between 2006 September and December covering four orbital cycles of this object. This large amount of data allowed us to produce an integral flux light curve covering for the first time all orbital phases of LS I +61 degrees 303. In addition, we also obtained a differential energy spectrum for two orbital phase bins covering the phase range 0.5 < phi < 0.6 and 0.6 < phi < 0.7. The photon index in the two phase bins is consistent within the errors with an average index Gamma = 2.6 +/- 0.2(stat) +/- 0.2(sys). LS I +61 degrees 303 was found to be variable at TeV energies on timescales of days. These new MAGIC measurements allowed us to search for intranight variability of the very high energy emission; however, no evidence for flux variability on timescales down to 30 min was found. To test for possible periodic structures in the light curve, we apply the formalism developed by Lomb and Scargle to the LS I +61 degrees 303 data taken in 2005 and 2006. We found the LS I +61 degrees 303 data set to be periodic with a period of (26.8 +/- 0.2) days (with a post-trial chance probability of 10(-7)), close to the orbital period.
Published: 2009

36. Radio imaging of the very-high-energy gamma-ray emission region in the central engine of a radio galaxy

Author: Veritas, Collaboration, Monitoring Team, Vlba Ghz M., Collaboration, H. E. S. S., Magic, Collaboration, Acciari, V. A., Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., Bradbury, S. M., Buckley, J. H., Bugaev, V., Butt, Y., Byrum, K., Cannon, A., Celik, O., Cesarini, A., Chow, Y. C., Ciupik, L., Cogan, P., Cui, W., Dickherber, R., Fegan, S. J., Finley, J. P., Fortin, P., Fortson, L., Furniss, A., Gall, D., Gillanders, G. H., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Horan, D., Hui, C. M., Humensky, T. B., Imran, A., Kaaret, P., Karlsson, N., Kieda, D., Kildea, J., Konopelko, A., Krawczynski, H., Krennrich, F., Lang, M. J., Lebohec, S., Maier, G., Mccann, A., Mccutcheon, M., Millis, J., Moriarty, P., Ong, R. A., Otte, A. N., Pandel, D., Perkins, J. S., Petry, D., Pohl, M., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Schroedter, M., Sembroski, G. H., Smith, A. W., Swordy, S. P., Theiling, M., Toner, J. A., Varlotta, A., Vincent, S., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Williams, D. A., Wissel, S., Wood, M., Walker, R. C., Davies, F., Hardee, P. E., Junor, W., Ly, C., Aharonian, F., Akhperjanian, A. G., Anton, G., Barres Almeida, U., Bazer-Bachi, A. R., Becherini, Y., Behera, B., Bernlohr, K., Bochow, A., Boisson, C., Bolmont, J., Borrel, V., Brucker, J., Brun, F., Brun, P., Buhler, R., Bulik, T., Busching, I., Boutelier, T., Chadwick, P. M., Charbonnier, A., Chaves, R. C. G., Cheesebrough, A., Chounet, L-M, Clapson, A. C., Coignet, G., Dalton, M., Daniel, M. K., Davids, I. D., Degrange, B., Deil, C., Dickinson, H. J., Djannati-Atai, A., Domainko, W., Drury, L. O. C., Dubois, F., Dubus, G., Dyks, J., Dyrda, M., Egberts, K., Emmanoulopoulos, D., Espigat, P., Farnier, C., Feinstein, F., Fiasson, A., Forster, A., Fontaine, G., Fussling, M., Gabici, S., Gallant, Y. A., Gerard, L., Gerbig, D., Giebels, B., Glicenstein, J. F., Gluck, B., Goret, P., Gohring, D., Hauser, D., Hauser, M., Heinz, S., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J. A., Hoffmann, A., Hofmann, W., Holleran, M., Hoppe, S., Horns, D., Jacholkowska, A., Jager, O. C., Jahn, C., Jung, I., Katarzynski, K., Katz, U., Kaufmann, S., Kendziorra, E., Kerschhaggl, M., Khangulyan, D., Khelifi, B., Keogh, D., Kluzniak, W., Kneiske, T., Komin, Nu, Kosack, K., Lamanna, G., Lenain, J-P, Lohse, T., Marandon, V., Martin, J. M., Martineau-Huynh, O., Marcowith, A., Maurin, D., Mccomb, T. J. L., Medina, M. C., Moderski, R., Moulin, E., Naumann-Godo, M., Naurois, M., Nedbal, D., Nekrassov, D., Nicholas, B., Niemiec, J., Nolan, S. J., Ohm, S., Olive, J-F, Ona Wilhelmi, E., Orford, K. J., Ostrowski, M., Panter, M., Paz Arribas, M., Pedaletti, G., Pelletier, G., Petrucci, P-O, Pita, S., Puhlhofer, G., Punch, M., Quirrenbach, A., Raubenheimer, B. C., Raue, M., Rayner, S. M., Renaud, M., Rieger, F., Ripken, J., Rob, L., Rosier-Lees, S., Rowell, G., Rudak, B., Rulten, C. B., Ruppel, J., Sahakian, V., Santangelo, A., Schlickeiser, R., Schock, F. M., Schroder, R., Schwanke, U., Schwarzburg, S., Schwemmer, S., Shalchi, A., Sikora, M., Skilton, J. L., Sol, H., Spangler, D., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Superina, G., Szostek, A., Tam, P. H., Tavernet, J-P, Terrier, R., Tibolla, O., Tluczykont, M., Christopher van Eldik, Vasileiadis, G., Venter, C., Venter, L., Vialle, J. P., Vincent, P., Vivier, M., Volk, H. J., Volpe, F., Wagner, S. J., Ward, M., Zdziarski, A. A., Zech, A., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., Barrio, J. A., Bastieri, D., Becerra Gonzalez, J., Becker, J. K., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Bock, R. K., Bonnoli, G., Bordas, P., Borla Tridon, D., Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Covino, S., Curtef, V., Dazzi, F., Angelis, A., Cea Del Pozo, E., Delgado Mendez, C., Los Reyes, R., Lotto, B., Maria, M., Sabata, F., Dominguez, A., Dorner, D., Doro, M., Elsaesser, D., Errando, M., Ferenc, D., Fernandez, E., Firpo, R., Fonseca, M. V., Font, L., Galante, N., Garcia Lopez, R. J., Garczarczyk, M., Gaug, M., Goebel, F., Hadasch, D., Hayashida, M., Herrero, A., Hildebrand, D., Hohne-Monch, D., Hose, J., Hsu, C. C., Jogler, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Moldon, J., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oya, I., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Persic, M., Peruzzo, L., Prada, F., Prandini, E., Puchades, N., Reichardt, I., Rhode, W., Ribo, M., Rico, J., Rissi, M., Robert, A., Rugamer, S., Saggion, A., Saito, T. Y., Salvati, M., Sanchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shayduk, M., Shore, S. N., Sidro, N., Sierpowska-Bartosik, A., Sillanpaa, A., Sitarek, J., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Wagner, R. M., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), APC - Astrophysique des Hautes Energies (APC - AHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), HESS, Universitat de Barcelona, Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), V. A., Acciari, E., Aliu, T., Arlen, M., Bautista, M., Beilicke, W., Benbow, S. M., Bradbury, J. H., Buckley, V., Bugaev, Y., Butt, K., Byrum, A., Cannon, O., Celik, A., Cesarini, Y. C., Chow, L., Ciupik, P., Cogan, W., Cui, R., Dickherber, S. J., Fegan, J. P., Finley, P., Fortin, L., Fortson, A., Furni, D., Gall, G. H., Gillander, J., Grube, R., Guenette, G., Gyuk, D., Hanna, J., Holder, D., Horan, C. M., Hui, T. B., Humensky, A., Imran, P., Kaaret, N., Karlsson, D., Kieda, J., Kildea, A., Konopelko, H., Krawczynski, F., Krennrich, M. J., Lang, S., Lebohec, G., Maier, A., Mccann, M., Mccutcheon, J., Milli, P., Moriarty, R. A., Ong, A. N., Otte, D., Pandel, J. S., Perkin, D., Petry, M., Pohl, J., Quinn, K., Ragan, L. C., Reye, P. T., Reynold, E., Roache, H. J., Rose, M., Schroedter, G. H., Sembroski, A. W., Smith, S. P., Swordy, M., Theiling, J. A., Toner, A., Varlotta, S., Vincent, S. P., Wakely, J. E., Ward, T. C., Weeke, A., Weinstein, D. A., William, S., Wissel, M., Wood, R. C., Walker, F., Davie, P. E., Hardee, W., Junor, C., Ly, F., Aharonian, A. G., Akhperjanian, G., Anton, U. B., de Almeida, A. R., Bazer Bachi, Y., Becherini, B., Behera, K., Bernlohr, A., Bochow, C., Boisson, J., Bolmont, V., Borrel, J., Brucker, F., Brun, P., Brun, R., Buhler, T., Bulik, I., Busching, T., Boutelier, P. M., Chadwick, A., Charbonnier, R. C. G., Chave, A., Cheesebrough, L. M., Chounet, A. C., Clapson, G., Coignet, M., Dalton, M. K., Daniel, I. D., David, B., Degrange, C., Deil, H. J., Dickinson, A., Djannati Atai, W., Domainko, L. O., Drury, F., Duboi, G., Dubu, J., Dyk, M., Dyrda, K., Egbert, D., Emmanoulopoulo, P., Espigat, C., Farnier, F., Feinstein, A., Fiasson, A., Forster, G., Fontaine, M., Fussling, S., Gabici, Y. A., Gallant, L., Gerard, D., Gerbig, B., Giebel, J. F., Glicenstein, B., Gluck, P., Goret, D., Gohring, D., Hauser, M., Hauser, S., Heinz, G., Heinzelmann, G., Henri, G., Hermann, J. A., Hinton, A., Hoffmann, W., Hofmann, M., Holleran, S., Hoppe, D., Horn, A., Jacholkowska, O. C., de Jager, C., Jahn, I., Jung, K., Katarzynski, U., Katz, S., Kaufmann, E., Kendziorra, M., Kerschhaggl, D., Khangulyan, B., Khelifi, D., Keogh, W., Kluzniak, T., Kneiske, N., Komin, K., Kosack, G., Lamanna, J. P., Lenain, T., Lohse, V., Marandon, J. M., Martin, O., Martineau Huynh, A., Marcowith, D., Maurin, T. J. L., Mccomb, M. C., Medina, R., Moderski, E., Moulin, M., Naumann Godo, M. d., Nauroi, D., Nedbal, D., Nekrassov, B., Nichola, J., Niemiec, S. J., Nolan, S., Ohm, J. F., Olive, E. D., Wilhelmi, K. J., Orford, M., Ostrowski, M., Panter, M. P., Arriba, G., Pedaletti, G., Pelletier, P. O., Petrucci, S., Pita, M., Raue, S. M., Rayner, M., Renaud, F., Rieger, J., Ripken, L., Rob, S., Rosier Lee, G., Rowell, B., Rudak, C. B., Rulten, J., Ruppel, V., Sahakian, A., Santangelo, R., Schlickeiser, F. M., Schock, R., Schroder, U., Schwanke, S., Schwarzburg, S., Schwemmer, A., Shalchi, M., Sikora, J. L., Skilton, H., Sol, D., Spangler, L., Stawarz, R., Steenkamp, C., Stegmann, F., Stinzing, G., Superina, A., Szostek, P. H., Tam, J. P., Tavernet, R., Terrier, O., Tibolla, M., Tluczykont, C. v., Eldik, G., Vasileiadi, C., Venter, L., Venter, J. P., Vialle, P., Vincent, M., Vivier, H. J., Volk, F., Volpe, S. J., Wagner, M., Ward, A. A., Zdziarski, A., Zech, H., Anderhub, L. A., Antonelli, P., Antoranz, M., Backe, C., Baixera, S., Balestra, J. A., Barrio, D., Bastieri, J. B., Gonzlez, J. K., Becker, W., Bednarek, K., Berger, E., Bernardini, A., Biland, R. K., Bock, G., Bonnoli, P., Borda, D. B., Tridon, V., Bosch Ramon, D., Bose, I., Braun, T., Bretz, I., Britvitch, M., Camara, E., Carmona, S., Commichau, J. L., Contrera, J., Cortina, M. T., Costado, S., Covino, V., Curtef, F., Dazzi, A. D., Angeli, E. D., Del Pozo, C. D., Mendez, R. D., los Reye, B. D., Lotto, M. D., Maria, F. D., Sabata, A., Dominguez, D., Dorner, M., Doro, D., Elsaesser, M., Errando, D., Ferenc, E., Fernndez, R., Firpo, M. V., Fonseca, L., Font, N., Galante, R. J. G., Lopez, M., Garczarczyk, M., Gaug, F., Goebel, D., Hadasch, M., Hayashida, A., Herrero, D., Hildebrand, D., Hohne Monch, J., Hose, C. C., Hsu, T., Jogler, D., Kranich, A. L., Barbera, A., Laille, E., Leonardo, E., Lindfor, S., Lombardi, Longo, Francesco, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, M., Mariotti, M., Martinez, D., Mazin, M., Meucci, J. M., Miranda, R., Mirzoyan, H., Miyamoto, J., Moldon, M., Mole, A., Moralejo, D., Nieto, K., Nilsson, J., Ninkovic, I., Oya, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, R. G., Pegna, M. A., Perez Torre, M., Persic, L., Peruzzo, F., Prada, E., Prandini, N., Puchade, I., Reichardt, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., Rugamer, A., Saggion, T. Y., Saito, M., Salvati, M., Sanchez Conde, K., Satalecka, V., Scalzotto, V., Scapin, T., Schweizer, M., Shayduk, S. N., Shore, N., Sidro, A., Sierpowska Bartosik, A., Sillanpaa, J., Sitarek, D., Sobczynska, F., Spanier, A., Stamerra, L. S., Stark, L., Takalo, F., Tavecchio, P., Temnikov, D., Tescaro, M., Teshima, D. F., Torre, N., Turini, H., Vankov, R. M., Wagner, V., Zabalza, F., Zandanel, R., Zanin, and J., Zapatero
Subjects: m87 jet, Radio galaxy, Astrophysics, telescope, 01 natural sciences, Astroparticle, Jets (Astrofísica), Radio astronomy, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, tev emission, Multidisciplinary, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, 3. Good health, Forats negres (Astronomia), Radioastronomia, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Very High Energy Gamma-ray Astronomy, MAGIC telescope, Galaxies, Radio wave, outburst, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Active galactic nucleus, inner jet, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, X-shaped radio galaxy, veritas, 0103 physical sciences, Nucli galàctic actiu, crab-nebula, VHE Gamma ray, Astrophysics::Galaxy Astrophysics, Active galactic nuclei, variability, 010308 nuclear & particles physics, nucleus, Astronomy, Astrophysics - Astrophysics of Galaxies, Galaxy, Accretion (astrophysics), Astrophysical jets, Black hole, Cherenkov telescope, Astrophysics of Galaxies (astro-ph.GA), Black holes (Astronomy), supermassive black-hole
Abstract: 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 particles to energies exceeding 10^12 electron Volts (eV) and are bright sources of very-high-energy (VHE) gamma-ray emission, it is not yet known where the VHE emission originates. Here we report on radio and VHE observations of the radio galaxy M87, revealing a period of extremely strong VHE gamma-ray flares accompanied by a strong increase of the radio flux from its nucleus. These results imply that charged particles are accelerated to very high energies in the immediate vicinity of the black hole., Comment: 21 pages, 5 figures, published in Science, see: http://www.sciencemag.org/cgi/content/abstract/325/5939/444
Published: 2009
Full Text: View/download PDF

37. MAGIC upper limits to the VHE gamma-ray flux of 3C 454.3 in high emission state RID B-5372-2009

Author: Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Balestra, S, Barrio, Ja, Bartko, H, Bastieri, D, Gonzalez, Jb, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Tridon, Db, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, de los Reyes, R, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Elsaesser, D, Errando, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hadasch, D, Hayashida, M, Herrero, A, Hohne Monch, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Moldon, J, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Prada, F, Prandini, E, Puchades, N, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaa, A, Sitarek, J, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, Zapatero, J, Vercellone, S, Donnarumma, I, D'Ammando, F, and Tavani, M.
Published: 2009

38. DISCOVERY OF A VERY HIGH ENERGY GAMMA-RAY SIGNAL FROM THE 3C 66A/B REGION RID B-5372-2009

Author: Aliu, E, Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Balestra, S, Barrio, Ja, Bartko, H, Bastieri, D, Gonzalez, Jb, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Tridon, Db, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, de los Reyes, R, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Elsaesser, D, Errando, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hadasch, D, Hayashida, M, Herrero, A, Hohne Monch, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Moldon, J, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaa, A, Sitarek, J, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2009

39. Improving the performance of the single-dish Cherenkov telescope MAGIC through the use of signal timing RID B-5372-2009

Author: Aliu, E, Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Tridon, Db, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, de los Reyes, R, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Elsaesser, D, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hadasch, D, Hayashida, M, Herrero, A, Hoehne, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchadesa, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Ruegamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaeae, A, Sitarek, J, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2009

40. Characterization of 13 and 30 μm thick hydrogenated amorphous silicon diodes deposited over CMOS integrated circuits for particle detection application

Author: Despeisse, M., Anelli, G., Commichau, S. C., Dissertori, G., Garrigos, A., Jarron, P., Miazza, C., Moraes, D., Shah, Arvind, Wyrsch, Nicolas, and Viertel, G. M.
Subjects: Hardware_INTEGRATEDCIRCUITS
Abstract: We present the experimental results obtained with a novel monolithic silicon pixel detector which consists in depositing a n–i–p hydrogenated amorphous silicon (a-Si:H) diode straight above the readout ASIC (this technology is called Thin Film on ASIC, TFA). The characterization has been performed on 13 and 30 μm thick a-Si:H films deposited on top of an ASIC containing a linear array of high-speed low-noise transimpedance amplifiers designed in a 0.25 μm CMOS technology. Experimental results presented have been obtained with a 600 nm pulsed laser. The results of charge collection efficiency and charge collection speed of these structures are discussed.
Published: 2008

41. Probing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope

Author: MAGIC, Collaboration, Albert, J., Aliu, E., Anderhub, H., Antonelli, L.-A., Antoranz, P., Backes, M., Baixeras, C., Barrio, J.-A., Bartko, H., Bastieri, D., Becker, J.-K., Bednarek, W., Berger, K., Bernardini, E., Bigongiari, C., Biland, A., Bock, R.-K., Bonnoli, G., Bordas, P., Bosch-Ramon, V., Bretz, Thomas Günther, Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Commichau, S., Contreras, J.-L., Cortina, J., Costado, M.-T., Covino, S., Curtef, V., Dazzi, F., De Angelis, A., De Cea Del Pozo, E., Delgado Mendez, C., De Los Reyes, R., De Lotto, B., De Maria, M., De Sabata, F., Dominguez, A., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fern'andez, E., Firpo, R., Fonseca, M.-V., Font, L., Galante, N., Garc'ia L'opez, R.-J., Garczarczyk, M., Gaug, M., Goebel, F., Hayashida, M., Herrero, A., Höhne, D., Hose, J., Hsu, C.-C., Huber, S., Jogler, T., Kranich, D., La Barbera, A., Laille, A., Leonardo, E., Lindfors, E., Lombardi, S., Longo, F., L'opez, M., Lorenz, E., Majumdar, P., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Mart'inez, M., Mazin, D., Meucci, M., Meyer, M., Miranda, J.-M., Mirzoyan, R., Moles, M., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J.-M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R.-G., Perez-Torres, M.-A., Persic, M., Peruzzo, L., Piccioli, A., Prada, F., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Rib'o, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T.-Y., Salvati, M., Sanchez-Conde, M., Sartori, P., Satalecka, K., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Sidro, N., Sierpowska-Bartosik, A., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L.-S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Tluczykont, M., Torres, D.-F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R.-M., Wittek, W., Zabalza, V., Zandanel, F., Zanin, R., Zapatero, J., Ellis, J., Mavromatos, N.-E., Nanopoulos, D.-V., Sakharov, A.-S., Sarkisyan, E.-K.-G., Polish Academy of Sciences, European Commission, ETH Zurich, and Universitat de Barcelona
Subjects: High Energy Physics - Theory, Special relativity, Photon, Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, law.invention, High Energy Physics - Phenomenology (hep-ph), law, Gamma ray astronomy, gamma-ray, MAGIC (telescope), 010303 astronomy & astrophysics, Boson, Physics, Mkn 501), Active galactic nuclei, Quantum gravity, Supersymmetric models, Particle acceleration [Gamma-ray sources (Individual], Astrophysics (astro-ph), gamma-ray bursts, Gamma ray, Fotons, High Energy Physics - Phenomenology, Electrónica, Física nuclear, Electricidad, Telescopis espacials, Mkn 501) [Gamma-ray sources (Individual], Flare, Astrophysics and Astronomy, Nuclear and High Energy Physics, Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, Particle acceleration, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Space telescopes, 0103 physical sciences, Gamma-ray sources (Individual: Mkn 501), Astronomia de raigs gamma, ddc:530, Nucli galàctic actiu, Blazar, gamma-ray sources, Photons, 010308 nuclear & particles physics, Supersimetria, High Energy Physics - Theory (hep-th), Gravetat quàntica, High Energy Physics::Experiment, Supersymmetry, Gamma-ray burst
Abstract: We analyze the timing of photons observed by the MAGIC telescope during a flare of the active galactic nucleus Mkn 501 for a possible correlation with energy, as suggested by some models of quantum gravity (QG), which predict a vacuum refractive index ≃ 1 + (E / MQGn)n, n = 1, 2. Parametrizing the delay between γ-rays of different energies as Δ t = ± τl E or Δ t = ± τq E2, we find τl = (0.030 ± 0.012) s / GeV at the 2.5-σ level, and τq = (3.71 ± 2.57) × 10-6 s / GeV2, respectively. We use these results to establish lower limits MQG 1 > 0.21 × 1018 GeV and MQG 2 > 0.26 × 1011 GeV at the 95% C.L. Monte Carlo studies confirm the MAGIC sensitivity to propagation effects at these levels. Thermal plasma effects in the source are negligible, but we cannot exclude the importance of some other source effect., Physics Letters B, 668 (4), ISSN:0370-2693, ISSN:0031-9163, ISSN:1873-2445
Published: 2008
Full Text: View/download PDF

42. Magic observations of the unidentified gamma-ray source TEV J2032+4130 RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Dazzi, F, De Angelis, A, Delgado, C, de los Reyes, R, Domingo Santamaria, E, De Lotto, B, De Maria, M, De Sabata, F, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Goebel, F, Hayashida, M, Herrero, A, Hohne, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kosyra, R, Kranich, D, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Persic, M, Peruzzo, L, Piccioli, A, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

43. FIRST BOUNDS ON THE HIGH-ENERGY EMISSION FROM ISOLATED WOLF-RAYET BINARY SYSTEMS RID B-5372-2009

Author: Aliu, E, Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Bigongiari, C, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, Reyes, Rd, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hayashida, M, Herrero, A, Hohne, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

44. Simultaneous multiwavelength observations of the blazar 1ES 1959+650 at a low TeV flux

Author: Tagliaferri, G, Foschini, L, Ghisellini, G, Maraschi, L, Tosti, G, Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Bedyugin, A, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Coarasa, Ja, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Danielyan, V, Dazzi, F, DE ANGELIS, Alessandro, Delgado, C, de los Reyes, R, DE LOTTO, Barbara, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Fuchs, M, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Giller, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Herrero, A, Hohne, D, Hose, J, Huber, S, Hsu, Cc, Jacon, P, Jogler, T, Kosyra, R, Kranich, D, Kritzer, R, Laille, A, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Persic, M, Peruzzo, L, Piccioli, A, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, Sn, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wibig, T, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Subjects: High energy, BOARD SUZAKU, Astrophysics::High Energy Astrophysical Phenomena, BL-LACERTAE OBJECTS, EINSTEIN SLEW SURVEY, GAMMA-RAY EMISSION, RADIO-LOUD QUASARS, BAND X-RAY, XMM-NEWTON, BEPPOSAX OBSERVATIONS, INTERNAL SHOCKS, PKS 2155-304, FOS: Physical sciences, Astrophysics, 01 natural sciences, law.invention, Flux (metallurgy), law, Time windows, 0103 physical sciences, X-rays, MAGIC (telescope), Blazar, 010303 astronomy & astrophysics, Cosmic rays, Physics, 010308 nuclear & particles physics, gamma ray astronomy, IMAGING CHERENKOV DETECTOR, Astrophysics (astro-ph), Astronomy and Astrophysics, Galaxies, Synchrotron, Galàxies, 13. Climate action, Space and Planetary Science, Homogeneous, Galàxies actives, Active galaxies, Spectral energy distribution, Electrónica, Física nuclear, Raigs X, Electricidad
Abstract: We present the results from a multiwavelength campaign on the TeV blazar 1ES 1959+650, performed in May, 2006. Data from the optical, UV, soft- and hard-X-ray and very high energy (VHE) gamma-ray (E > 100 GeV) bands were obtained with the SUZAKU and SWIFT satellites, with the MAGIC telescope and other ground based facilities. The source spectral energy distribution (SED), derived from SUZAKU and MAGIC observations at the end of May 2006, shows the usual double hump shape, with the synchrotron peak at a higher flux level than the Compton peak. With respect to historical values, during our campaign the source exhibited a relatively high state in X-rays and optical, while in the VHE band it was at one of the lowest level so far recorded. We also monitored the source for flux-spectral variability on a time window of 10 days in the optical-UV and X-ray bands and 7 days in the VHE band. The source varies more in the X-ray, than in the optical band, with the 2-10 keV X-ray flux varying by a factor of ~2. The synchrotron peak is located in the X-ray band and moves to higher energies as the source gets brighter, with the X-ray fluxes above it varying more rapidly than the X-ray fluxes at lower energies. The variability behaviour observed in the X-ray band cannot be produced by emitting regions varying independently, and suggests instead some sort of ``standing shock'' scenario. The overall SED is well represented by an homogeneous one-zone synchrotron inverse Compton emission model, from which we derive physical parameters that are typical of high energy peaked blazars., 30 pages, 8 figures, accepted for publication in ApJ
Published: 2008

45. Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Backes, M, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Danielyan, V, Dazzi, F, De Angelis, A, Delgado, C, de los Reyes, R, De Lotto, B, De Maria, M, De Sabata, F, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Fuchs, M, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Herrero, A, Hohne, D, Hose, J, Huber, S, Hsu, Cc, Jacon, P, Jogler, T, Kosyra, R, Kranich, D, Laille, A, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Perez Torres MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sanchez Conde, M, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

46. Long term VHE gamma ray monitoring of bright blazars with a dedicated Cherenkov telescope

Author: Bretz, T., Backes, M., Neise, D., Rhode, W., Mannheim, K., Dorner, D., Hadash, D., Becker, J. K., Biland, A., Braun, I., Brivitch, I., Commichau, S. C., Rissi, M., von Gunten, H., Hildebrand, D., Kranich, D., Lorenz, E., Lustermann, W., Pauss, F., Pohl, Martin, Renker, D., Röser, U., Straumann, U., and Viertel, G.
Subjects: General Relativity, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, ddc:500.2, Cosmology
Abstract: We intend to set up an imaging air Cherenkov telescope with low cost, but high performance design for remote operation. The goal is to dedicate this gamma-ray telescope to long-term monitoring observations of nearby, bright blazars at very high energies (VHE). We will (i) search for orbital modulation of the blazar emission due to supermassive black hole binaries, (ii) study the statistics of flares and their physical origin, and (iii) correlate the data with observations of flares with higher sensitivity telescopes such as MAGIC, VERITAS, and H.E.S.S. Common observations with theWhipple 10m-monitoring telescope will be the first step towards a future 24 h-monitoring of selected sources. This idea was presented for the first time in [1]. The telescope design is based on a full technological upgrade of one of the former telescopes of the HEGRA collaboration, still located at the Observatorio del Roque de los Muchachos on the Canarian Island of La Palma (Spain). After this upgrade, the telescope will be operated robotic, its sensitivity will greatly be improved and a much lower energy threshold below 350GeV will be achieved.
Published: 2008

47. VERY HIGH ENERGY GAMMA-RAY OBSERVATIONS OF STRONG FLARING ACTIVITY IN M87 IN 2008 FEBRUARY RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antonelli, La, Antoranz, P, Backes, M, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bernardini, E, Bigongiari, C, Biland, A, Bock, Rk, Bonnoli, G, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, del Pozo ED, Reyes, Rdl, De Lotto, B, De Maria, M, De Sabata, F, Mendez, Cd, Dominguez, A, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Galante, N, Lopez, Rjg, Garczarczyk, M, Gaug, M, Goebel, F, Hayashida, M, Herrero, A, Hohne, D, Hose, J, Hsu, Cc, Huber, S, Jogler, T, Kranich, D, La Barbera, A, Laille, A, Leonardo, E, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, Rg, Perez Torres MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Salvati, M, Sanchez Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sierpowska Bartosik, A, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

48. Simultaneous multiwavelength observations of the blazar 1ES 1959+650 at a low TeV flux RID B-5372-2009

Author: Tagliaferri, G, Foschini, L, Ghisellini, G, Maraschi, L, Tosti, G, Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Bedyugin, A, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Coarasa, Ja, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Danielyan, V, Dazzi, F, De Angelis, A, Delgado, C, de los Reyes, R, De Lotto, B, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Fuchs, M, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Giller, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Herrero, A, Hohne, D, Hose, J, Huber, S, Hsu, Cc, Jacon, P, Jogler, T, Kosyra, R, Kranich, D, Kritzer, R, Laille, A, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Persic, M, Peruzzo, L, Piccioli, A, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wibig, T, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

49. Simultaneous Multiwavelength Observations of the Blazar 1ES 1959+650 at a Low TeV Flux

Author: Tagliaferri, G., Foschini, L., Ghisellini, G., Maraschi, L., Tosti, Gino, Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Becker, J. K., Bednarek, W., Bedyugin, A., Berger, K., Bigongiari, C., Biland, A., Bock, R. K., Bordas, P., Bosch Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Coarasa, J. A., Commichau, S., Contreras, J. L., Cortina, J., Costado, M. T., Curtef, V., Danielyan, V., Dazzi, F., Angelis, A. D., Delgado, C., Los, R. d., Lotto, B. D., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernández, E., Firpo, R., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., García López, R. J., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Herrero, A., Höhne, D., Hose, J., Huber, S., Hsu, C. C., Jacon, P., Jogler, T., Kosyra, R., Kranich, D., Kritzer, R., Laille, A., Lindfors, E., Lombardi, S., Longo, F., López, M., Lorenz, E., Majumdar, P., Maneva, G., Mannheim, K., Mariotti, M., Martínez, M., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nieto, D., Nilsson, K., Ninkovic, J., Oña Wilhelmi, E., Otte, N., Oya, I., Panniello, M., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Prandini, E., Puchades, N., Raymers, A., Rhode, W., Ribó, M., Rico, J., Rissi, M., Robert, A., Rügamer, S., Saggion, A., Saito, T. Y., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sillanpää, A., Sobczynska, D., Spanier, F., Stamerra, A., Stark, L. S., Takalo, L., Tavecchio, F., Temnikov, P., Tescaro, D., Teshima, M., Torres, D. F., Turini, N., Vankov, H., Venturini, A., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., Zandanel, F., Zanin, R., Zapatero, J., and Collaboration, M.
Subjects: X-Rays: Galaxies, Galaxies: Jets, Galaxies: BL Lacertae Objects: Individual: Alphanumeric: 1ES 1959+650, Galaxies: Active
Published: 2008

50. Systematic search for VHE gamma-ray emission from X-ray-bright high-frequency BL Lac objects RID B-5372-2009

Author: Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Baixeras, C, Barrio, Ja, Bartko, H, Bastieri, D, Becker, Jk, Bednarek, W, Berger, K, Bigongiari, C, Biland, A, Bock, Rk, Bordas, P, Bosch Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Coarasa, Ja, Commichau, S, Contreras, Jl, Cortina, J, Costado, Mt, Curtef, V, Danielyan, V, Dazzi, F, De Angelis, A, Delgado, C, de los Reyes, R, De Lotto, B, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernandez, E, Firpo, R, Fonseca, Mv, Font, L, Fuchs, M, Galante, N, Garcia Lopez RJ, Garczarczyk, M, Gaug, M, Giller, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Herrero, A, Hoehne, D, Hose, J, Huber, S, Hsu, Cc, Jacon, P, Jogler, T, Kosyra, R, Kranich, D, Kritzer, R, Laille, A, Lindfors, E, Lombardi, S, Longo, F, Lopez, M, Lorenz, E, Majumdar, P, Maneva, G, Mannheim, K, Mariotti, M, Martinez, M, Mazin, D, Merck, C, Meucci, M, Meyer, M, Miranda, Jm, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Ona Wilhelmi, E, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, Jm, Pasanen, M, Pascoli, D, Pauss, F, Pegna, R, Persic, M, Peruzzo, L, Piccioli, A, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribo, M, Rico, J, Rissi, M, Robert, A, Rugamer, S, Saggion, A, Saito, Ty, Sanchez, A, Sartori, P, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, STEVEN NEIL, Sidro, N, Sillanpaa, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, Ls, Takalo, L, Temnikov, P, Tescaro, D, Teshima, M, Torres, Df, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, Rm, Wibig, T, Wittek, W, Zandanel, F, Zanin, R, and Zapatero, J.
Published: 2008

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

220 results on '"Commichau, S"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources