Bibcode
Zanin, R.; Wu, M. H.; Will, M.; Ward, J. E.; Vovk, I.; Verguilov, V.; Vanzo, G.; Treves, A.; Toyama, T.; Torres, D. F.; Thaele, J.; Teshima, M.; Tescaro, D.; Terzić, T.; Tavecchio, F.; Temnikov, P.; Takalo, L.; Surić, T.; Strzys, M.; Steinbring, T.; Sobczynska, D.; Stamerra, A.; Sitarek, J.; Snidaric, I.; Sillanpää, A.; Shore, S. N.; Schweizer, T.; Schroeder, S.; Satalecka, K.; Saito, T.; Rico, J.; Rhode, W.; Ribó, M.; Reichardt, I.; Garcia, J. R.; Puljak, I.; Prada Moroni, P. G.; Prandini, E.; Poutanen, J.; Persic, M.; Perri, L.; Pedaletti, G.; Peresano, M.; Paredes-Fortuny, X.; Paredes, J. M.; Paneque, D.; Paoletti, R.; Palatiello, M.; Palacio, J.; Paiano, S.; Overkemping, A.; Nogués, L.; Noda, K.; Nishijima, K.; Nievas Rosillo, M.; Nilsson, K.; Niedzwiecki, A.; Neustroev, V.; Nakajima, D.; Moretti, E.; Moralejo, A.; Mirzoyan, R.; Miranda, J. M.; Menzel, U.; Mazin, D.; Martínez, M.; Mariotti, M.; Marcote, B.; Maraschi, L.; Mannheim, K.; Manganaro, M.; Mallot, K.; Maneva, G.; Makariev, M.; Majumdar, P.; López-Coto, R.; López, M.; Lombardi, S.; Longo, F.; Lindfors, E.; Lelas, D.; La Barbera, A.; Kushida, J.; Kubo, H.; Konno, Y.; Idec, W.; Kodani, K.; Hughes, G.; Hose, J.; Hrupec, D.; Herrera, J.; Hahn, A.; Hayashida, M.; Hadasch, D.; Guberman, D.; Gora, D.; González Muñoz, A.; Giammaria, P.; Godinović, N.; Gaug, M. et al.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 601, id.A33, 11 pp.
Advertised on:
5
2017
Revista
Número de citas
23
Número de citas referidas
16
Descripción
Context. We present the results of a multi-year monitoring campaign of
the Galactic center (GC) with the MAGIC telescopes. These observations
were primarily motivated by reports that a putative gas cloud (G2) would
be passing in close proximity to the super-massive black hole (SMBH),
associated with Sagittarius A*, located at the center of our galaxy.
This event was expected to give astronomers a unique chance to study the
effect of in-falling matter on the broad-band emission of a SMBH.
Aims: We search for potential flaring emission of very-high-energy (VHE;
≥100 GeV) gamma rays from the direction of the SMBH at the GC due to
the passage of the G2 object. Using these data we also study the
morphology of this complex region. Methods: We observed the GC
region with the MAGIC Imaging Atmospheric Cherenkov Telescopes during
the period 2012-2015, collecting 67 h of good-quality data. In addition
to a search for variability in the flux and spectral shape of the GC
gamma-ray source, we use a point-source subtraction technique to remove
the known gamma-ray emitters located around the GC in order to reveal
the TeV morphology of the extended emission inside that region.
Results: No effect of the G2 object on the VHE gamma-ray emission from
the GC was detected during the 4 yr observation campaign. We confirm
previous measurements of the VHE spectrum of Sagittarius A*, and do not
detect any significant variability of the emission from the source.
Furthermore, the known VHE gamma-ray emitter at the location of the
supernova remnant G0.9+0.1 was detected, as well as the recently
discovered VHE source close to the GG radio arc.
Proyectos relacionados
![Telescopio MAGIC Project Image](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/project/Imagen%20RGL.png?h=a38a7f06&itok=UgLTRZyC)
Astrofísica de Partículas
El Grupo de Astrofísica de Partículas del IAC participa activamente en tres grandes colaboraciones internacionales de astrofísica de muy altas energías: AMS (Alpha Magnetic Spectrometer), los telescopios de radiación Cherenkov MAGIC I y II, y el Cherenkov Telescope Array (CTA). AMS es un detector de partículas diseñado para operar en el espacio, a
Ramón
García López