| Name: | Habib Ahammad Mondal |
| Affiliation: | Saha Institute of Nuclear Physics |
| Conference ID : | ASI2023_172 |
| Title : | Long term study of the EHBL object 1ES2344+514 |
| Authors : | Axel Arbet-Engels, Habib Ahammad Mondal , Marina Manganaro , Daniela Dorner , Bernd Schleicher, Pratik Majumdar, Satoshi Fukami, Filippo D'Ammando, and other members of the MAGIC collaboration |
| Mode of Presentation: | Poster |
| Abstract Category : | Extragalactic Astronomy |
| Abstract : | Blazars are radio-active Active Galactic Nuclei (AGN), where the relativistic jet is pointed
towards our line of sight. The corresponding broadband spectral energy distribution shows
two broad components. The lower energy component is located in the optical-to-X-ray band
while the high energy component peaks in the gamma-ray regime. Blazars are classified
depending on the position of the peak frequency of the synchrotron component.
Extreme high-frequency BL Lacs (EHBLs) objects show a synchrotron peak frequency
above 10^17 Hz.
1ES2344+514 is a nearby blazar having a redshift of z=0.044. It shows intermittent EHBL
features- sometimes it behaves as EHBL and other times not. This source was detected in
VHE by the Whipple 10m telescope during its bright flare in December 1995. Following the
event, few multi wavelength (MWL) campaigns have been organised to have a better study
of the source. During most of these observations, the source was found to be in a much
lower state than the flaring one. The broadband SED thus obtained describes the source
during its low activity. A single zone synchrotron self compton(SSC) model well described
the data in this period.
This talk will discuss the results obtained from the MWL campaigns carried out by the
MAGIC collaboration following the 2016 flare and a much more dense campaign between
2019 and 2021. The main goal of this 2019-2021 campaign is to provide a characterisation
of the intermittent EHBL behaviour of the source. |
