ISP BL Lac X-ray Survey with IceCube Temporal Correlation: Discovery of Class-H Spectral Hardening Source

Key Points

• The research aims to examine the X-ray spectra of ISP BL Lac objects and discover correlations with IceCube events.
• Conducted a complete X-ray spectral survey of 347 ISP BL Lac objects from the 4LAC-DR3 catalog.
• Identified sources exhibiting spectral hardening properties.
• Performed cross-correlation analysis with IceCube GOLD events across defined temporal windows.
• Discovered a unique class of sources that exhibit spectral hardening characteristics.
• Significant correlation found between the spectral hardening sources and IceCube GOLD events.