popular writer; best-selling author; writer of the moment
Refers to an author whose works are currently fashionable or widely read, often implying temporary popularity rather than lasting literary fame.
He is one of the most talked-about popular writers right now.
The popular writer's new book went into a second printing even before its release.
人気作家 also means a popular writer, but 流行作家 emphasizes being in vogue or trendy at the moment, while 人気作家 simply means a writer who is well-liked or has a large following.
ベストセラー作家 specifically refers to a best-selling author, focusing on sales figures, whereas 流行作家 highlights current fashionability and may not always correlate with top sales.
Compound of 流行 (りゅうこう, 'fashion, trend') and 作家 (さっか, 'writer, author'). The term straightforwardly describes a writer who is currently in fashion.