Speaker
Description
The High-peaked BL Lac object 1ES 0647+250 is one of the few distant blazars detected at very-high-energy (VHE, E > 100 GeV) gamma rays during non-flaring activity. Its redshift is still uncertain, but a lower limit of z>0.29 was recently calculated, based on the minimum equivalent width of absorption features expected from the host galaxy. This blazar was first detected by the MAGIC telescopes between 2009 and 2011 during its low state, displaying around 2% of the Crab Nebula flux above 100 GeV, but it has shown several periods of large activity, where the VHE gamma-ray flux increased by more than 1 order of magnitude. For the first time for this object, the detailed broadband spectral energy distribution will be presented for different activity levels. Based on the datasets collected from 2009 to 2020, the multi-band variability and correlations among various energy bands will be discussed in the context of the different emission models.
Keywords
AGN; BL Lac object; VHE; gamma-rays; blazar
| Subcategory | Experimental Results |
|---|---|
| Collaboration | MAGIC |
| other Collaboration | Fermi-LAT |
