The 2WHSP catalog of VHE blazars

Blzars are extremely important for GeV-TeV astronomy; however, the number of cataloged blazars are still small relative to other AGNs. Thus, we built a HSP blazar catalog based on multi-frequency selection criteria, listing the most complete HSP blazar catalog (2WHSP) up to date. We cross-match all available radio, IR, and X-ray data, selecting only sources with Synchrotron peak larger than 1015Hz. In total the 2WHSP catalog includes 1695 objects, which are promising candidates for future high energy surveys.