Disentangling the gamma-ray emission of NGC 1275 and that of the Perseus cluster

@article{Colafrancesco2010DisentanglingTG,
  title={Disentangling the gamma-ray emission of NGC 1275 and that of the Perseus cluster},
  author={Sergio Colafrancesco and P. Marchegiani and Paolo Giommi},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={519}
}
Context. The Gamma-ray emission from galaxy clusters hosting active galaxies is a complex combination of diffuse and point-like emission features with different spectral and spatial properties. Aims. We discuss in details the case of the Perseus cluster containing the radio-galaxy NGC 1275 that has been recently detected as a bright gamma-ray source by the Fermi-LAT experiment, in order to disentangle the sources of emission. Methods. We provide a detailed study of the gamma-ray emission coming… Expand
Very high energy gamma-ray emission of Perseus Cluster and NGC 1275
The Perseus cluster of galaxies with the central galaxy NGC 1275 is ideally suitable both for studying the physics of relativistic jets from Active Galactic Nuclei and for revealing the feedback roleExpand
Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energy γ-rays
Aims. The radio galaxy NGC1275, recently identified as a very high energy (VHE, >100GeV) -ray emitter by MAGIC, is one of the few non-blazar active galactic nuclei detected in the VHE regime. TheExpand
Emission from the galaxy NGC 1275 at high and very high energies and its origin
The Seyfert galaxy NGC 1275 is the central, dominant galaxy in the Perseus cluster of galaxies. NGC1275 is known as a powerful source of radio and X-ray emission. The well-known extragalactic objectExpand
Very high energy gamma-ray emission of NGC 1275 and 3c382 and the possible activity nature of the Seyfert Galaxies
Galaxy NGC 1275 is the central dominant galaxy of the Perseus Cluster of Galaxies and is of Seyfert galaxy class. NGC 1275 is known as powerful X-ray and radio source. In 1996 year a new metagalacticExpand
Origin of very high energy emission in galaxy clusters
The Perseus cluster of galaxies with the central galaxy NGC 1275 is ideally suitable for studying both the physics of relativistic jets from Active Galactic Nuclei and for revealing the feedback roleExpand
Disentangling cosmic-ray and dark-matter induced γ-rays in galaxy clusters
Context. Galaxy clusters are among the best targets for indirect dark matter detection in γ-rays, despite the large astrophysical background expected from these objects. Detection is now within reachExpand
Is the radio emission in the Bullet cluster due to dark matter annihilation
We study the complex structure of the Bullet cluster radio halo to determine the Dark Matter (DM) contribution to the emission observed in the different subhalos corresponding to the DM and baryonicExpand
Probing the cosmic-ray content of galaxy clusters by stacking Fermi-LAT count maps
Aims. Observation in radio have shown that galaxy clusters are giant reservoirs of cosmic rays (CR). Although a gammaray signal from the cluster volume is expected to arise through interactions of CRExpand
Long-term observation of Seyfert Galaxies NGC 1275 and 3c 382 at TeV energies by SHALON
Galaxy NGC 1275 is the central dominant galaxy of the Perseus Cluster of Galaxies and is of Seyfert galaxy class. NGC 1275 is known as powerful X-ray and radio source. In 1996 year a new metagalacticExpand
Numerical models of neutrino and gamma-ray emission from magnetic reconnection in the core of radio-galaxies
Non-blazar radio-galaxies emitting in the very-high-energy (VHE; >100 GeV) regime offer a unique perspective for probing particle acceleration and emission processes in black hole (BH) accretion-jetExpand
...
1
2
...

References

SHOWING 1-10 OF 64 REFERENCES
TeV GAMMA-RAY OBSERVATIONS OF THE PERSEUS AND ABELL 2029 GALAXY CLUSTERS
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei.Expand
Clusters of galaxies and the diffuse gamma-ray background
Abstract We discuss the diffuse emission of gamma rays and neutrinos from galaxy clusters in the viable models for structure formation in the universe. We use a self-consistent picture for clusterExpand
MAGIC GAMMA-RAY TELESCOPE OBSERVATION OF THE PERSEUS CLUSTER OF GALAXIES : IMPLICATIONS FOR COSMIC RAYS, DARK MATTER, AND NGC 1275
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 emissionExpand
Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM
We report about the detection of 10 clusters of galaxies in the ongoing Swift/BAT all-sky survey. This sample, which comprises mostly merging clusters, was serendipitously detected in the 15--55 keVExpand
FERMI DISCOVERY OF GAMMA-RAY EMISSION FROM NGC 1275
We report the discovery of high-energy (E>100 MeV) gamma-ray emission from NGC 1275, a giant elliptical galaxy lying at the center of the Perseus cluster of galaxies, based on observations made withExpand
Nonthermal Hard X-Ray Emission in Galaxy Clusters Observed with the BeppoSAX PDS
We study the X-ray emission in a sample of galaxy clusters using the BeppoSAX PDS instrument in the 20-80 keV energy band. We estimate the nonthermal hard X-ray (HXR) cluster emission by modeling theExpand
Egret upper limits on the high-energy gamma-ray emission of galaxy clusters
We report EGRET upper limits on the high-energy gamma-ray emission from clusters of galaxies. EGRET observations between 1991 and 2000 were analyzed at positions of 58 individual clusters from aExpand
Non-thermal X-rays, a high-abundance ridge and fossil bubbles in the core of the Perseus cluster of galaxies
Using a deep Chandra observation of the Perseus cluster of galaxies, we find a high-abundance shell 250 arcsec (93 kpc) from the central nucleus. This ridge lies at the edge of the Perseus radioExpand
The relationship between the optical Hα filaments and the X‐ray emission in the core of the Perseus cluster
NGC 1275 in the centre of the Perseus cluster of galaxies, Abell 426, is surrounded by a spectacular filamentary Hα nebula. Deep Chandra X-ray imaging has revealed that the brighter outer filamentsExpand
On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies !
We investigate the relation between X-ray nuclear emission, optical emission line luminosities and black hole masses for a sample of 47 Seyfert galaxies. The sample, which has been selected from theExpand
...
1
2
3
4
5
...