Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements


Hardness Ratio parameterization

View the source on GitHub


* = required

hardness_rationumberratio of flux between high and low energy bands
hardness_ratio_errorarrayratio of flux between high and low energy bands, with asymmetric statistical errors taken into account
energy_range_softarrayEnergy range [keV] used in soft band of hardness ratio
energy_range_hardarrayEnergy range [keV] used in hard band of hardness ratio
Looking for U.S. government information and services? Visit