Fig. 2.
![The growth rate ${\rm Re}[\lambda ]$ (left) and the frequency ${\rm Im}[\lambda ]=-\omega$ (right) of the perturbation of $m=1$ and $\alpha =1$ for $\omega _{A\theta }/\Omega =0.5$. The magnetic shear is $Rb=0$. The long-dashed lines (left) show the positive real part of the first part of (29) for $Ro<-1$ and that of (30) for $-1<Ro<0$.](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/ptep/2014/11/10.1093_ptep_ptu139/3/ptu13902.jpeg?Expires=1750657694&Signature=ONq660nMn1jhPltNh3QIMDTYq3ilPPXJIcntOKrGfxGn8SDsujMNebvpUO1q2lsFdyW~kKb1OfFi-lQpiI2qWumKKqet5KPB0lJRj6J0y7LWOiD0Pnb~d~uE~M6oyXuhb6Af1Eh7uaj52MBbJmxpqLR3NUf27KnleYD87zBaKE4xjq7z2HjyczoMnfa~EIzWK~eiWJ5Fxtej-sycFd2rtQMYafxbV8SkfPuHI~nlJMIs5niybQUzdMfje~j3zzkoYjs6cUJN-jl1Wuzvqtr4MG9Mauv3zWDa0ujWdcIqJz09xRcJkP1Ew3FiNFQIpHeZD5XW9uhZtSCumdeR77gofQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
The growth rate |${\rm Re}[\lambda ]$| (left) and the frequency |${\rm Im}[\lambda ]=-\omega$| (right) of the perturbation of |$m=1$| and |$\alpha =1$| for |$\omega _{A\theta }/\Omega =0.5$|. The magnetic shear is |$Rb=0$|. The long-dashed lines (left) show the positive real part of the first part of (29) for |$Ro<-1$| and that of (30) for |$-1<Ro<0$|.
