Recently, Gupta et al. [2] claim that solutions with NDG have no uncharged analogue. This claim seems to be partially correct as it is seen in present article that neutral shear-free fluid (f =alpha(1)x(-5/2), alpha(1) being a constant) given by Stephani [3] can be charged.
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Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R ChinaNorthwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
Zhang, Weiping
Li, Zhongzheng
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Gansu Normal Univ Nationalities, Dept Phys, Hezuo 747000, Peoples R ChinaNorthwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
Li, Zhongzheng
Duan, Wenshan
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Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R ChinaNorthwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China