A novel double-rim forebaffle design for centimeter to sub-millimeter astrophysical observations

TL;DR

This paper introduces a double-rim forebaffle design aimed at reducing stray radiation in centimeter to sub-millimeter astronomical observations, thereby enhancing the detection of faint cosmic signals.

Contribution

The paper proposes a novel double-rim forebaffle design and demonstrates its potential to significantly mitigate stray radiation contamination through simulations.

Findings

Design reduces stray radiation impact

Simulations show improved observation quality

Potential for better detection of faint signals

Abstract

Stray radiation of various origin is a major source of degradation of centimeter to sub-millimeter astronomical observations. This is particularly problematic for the detection of signals such as faint cosmic microwave background polarization B modes, or for mapping large-scale extragalactic or Galactic diffuse emission. In this paper, we propose a double-rim forebaffle design to reduce the impact of such stray radiation contamination. Using qualitative arguments and numerical simulations, we show that such a design has the potential to substantially improve the quality of future observations.