DLMF:

Figure 10.3.14 (See in context.)

Figure 10.3.14: $\mathop{{H^{{(1)}}_{{5}}}\/}\nolimits\!\left(x+iy\right)$ , $-20\leq x\leq 10,-4\leq y\leq 4$ . 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.F14.mag
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