The invention relates to a damper (10) for reducing the pulsations in a chamber of a gas turbine, wherein the damper (10) comprises a resonator cavity (11) and a neck (12) in flow communication with the resonator cavity (11) and the chamber, wherein the neck includes a mouth (13) to communicate with the chamber, wherein air flow inside the chamber flows across the mouth of the neck, wherein the neck is so configured that the longitudinal axis of its mouth is angled 0 DEG - 90 DEG relative to the direction of the air flow inside the chamber. The damper of this invention may effectively alleviate the detrimental effect of the grazing flow and thus it enables the placement of the damper also at locations where strong grazing flows are present.