DLMF:

Figure 10.3.10 (See in context.)

Figure 10.3.10: $\mathop{{H^{{(1)}}_{{0}}}\/}\nolimits\!\left(x+iy\right)$ , $-10\leq x\leq 5,-2.8\leq y\leq 4$ . Principal value. There is a cut along the negative real axis.

Annotations:

Symbols:: $\mathop{{H^{{(1)}}_{{\nu}}}\/}\nolimits\!\left(z\right)$ : Bessel function of the third kind (or Hankel function), : real variable and : real variable
Permalink:: http://dlmf.nist.gov/10.3.F10.mag
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