NUSTAR / CYG X-2

Spectral-state explorer

Loading channel-resolved spectra…

Segment diagram

Color = observation 1σ error bars

Diagram axes

X axis

Y axis

Advanced settings

Detector modules

Swan overlay

Show

Reverse direction Cygnets

Drag the body or head; the neck follows both. Drag the wing-tip ring to rotate and stretch the wing, the square tail handle to stretch the body, or a cygnet head to resize that cygnet. Drag each cygnet’s body to move it. Reverse direction mirrors the whole editable swan.

Total average spectrum

Good-time weighted · 0.4 keV display bins · log energy and rate3–30 keV

Extraction & corrections

Method and limitations