Speaker
Description
Blazars, a highly energetic subclass of jetted active galactic nuclei (AGN), exhibit a broad band spectral energy distribution (SED) characterized by two broad bumps, commonly interpreted as non-thermal emission produced by relativistic particles in the jet. Over the past decades, an anticorrelation between the peak frequencies of these components and the total SED luminosity has been identified - the so-called blazar sequence - although its physical origin remains debated.
In this work, we investigate the role of TeV-detected BL Lac objects within the blazar sequence using a physical framework based on Synchrotron Self-Compton (SSC) emission models.
Unlike the original formulation of the sequence, we binned the sources according to their synchrotron peak frequency and select representative subsets of objects within each bin. For each source, we construct a SED including only data corresponding to an average state of activity.
We explore different combinations of SSC model parameters and their statistical correlations, with the aim of comparing the physical properties of BL Lac objects across different peak-frequency classes. This approach allows us to assess whether the blazar sequence can be interpreted in terms of underlying physical parameters and to ultimately identify a set of parameters that can provide a physically motivated starting point for broadband SED modeling of gamma-ray blazars.
