Onein - Stage of Mourning Pre-Burial
Please note that within this document, the term "Onein" refers to one a mourner whose relative is not yet buried. This is only a working definition, but that the actual paramaters of this stage are subject to debate by the commentators.
"Aninut" refers to the state of being an Onein.Status of an Onein
The first night, whether one is considered a regular Mourner or an Onein: Rosh Berachot 2:15BehaviorsOther Laws
Whether aninut at night is a Rabbinic or Biblical Institution: Berachot 16b
Distinction between where the corpse is/isn't before the mourner: Berachot 17b-18a
An Onein on Shabbat: Berachot 18a, Moed Katan 23b
If a spouse dies after kiddushin and before nisuin, is the surviving spouse an onein: Ketuvot 53a