Torus period coefficients on PGL(2) and Dirichlet series

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We fix a quadratic number field E, and the corresponding torus in PGL(2). We consider twisted (by a Hecke character of the field E) torus periods of automorphic functions. We prove meromorphic continuation for a Dirichlet series generated by these twisted periods.

Original languageEnglish
Pages (from-to)328-342
Number of pages15
JournalJournal of Number Theory
Issue number1
StatePublished - Jan 2013

Bibliographical note

Funding Information:
✩ Partially supported by the Veblen Fund at IAS, by the BSF grant 2006254, by the ISF Center of Excellency grant 1691/10, by the Minerva Center at ENI, and by the ERC grant 291612. E-mail address:


  • Double Dirichlet series
  • Hecke L-functions
  • Meromorphic continuation
  • Torus periods of cusp forms


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