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We introduce analogue black holes (BHs) based on ideal magnetohydrodynamicequations. Similar to acoustic BHs, which trap phonons and emit Hawkingradiation (HR) at the sonic horizon where the flow speed changes from super- tosub-sonic, in the horizon of magnetoacoustic and Alfv\'{e}nic BHs, themagnetoacoustic and Alfve'n waves will be trapped and emit HR made of quantizedvibrations similar to phonons which we call magnephonons and Alphonons. Weproposed that magnetoacoustic and Alfve'nic BHs may be created in thelaboratory using a tube with variable cross section embedded in a uniformmagnetic field, and a super-magnetoacoustic or a super-Alfve'nic flow. We showthat the Hawking temperature for both BHs is a function of the backgroundmagnetic field, number density of fluid, and radius of the tube. For a typicalsetup, the temperature is estimated to be about 0.0266 K.

Magnetoacoustic and Alfve'nic Black Holes with Hawking Radiation at Horizons Made of Magnephonons and Alphonons