TUCSON, Arizona, Oct. 2 -- The Astrophysical Journal, a research journal from the American Astronomical Society that says it is devoted to recent developments, discoveries and theories in astronomy and astrophysics, published research articles on the following topics in its Oct. 1, 2023, edition (Vol. 955, No. 2):

* Sm and Gd Isotopic Shifts in Eucrites and Implications for Their Cosmic-Ray Exposure History

* QPOs in Compact Sources as a Nonlinear Hydrodynamical Resonan . . .

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