Direct Distance Measurements to SN2009ip

TL;DR

This paper introduces the Dense Shell Method (DSM), a new technique for directly measuring astronomical distances, and successfully applies it to SN2009ip, achieving results consistent with traditional methods.

Contribution

The paper presents the DSM as a novel direct distance measurement method and demonstrates its accuracy by applying it to SN2009ip.

Findings

DSM yields a distance of 20.1 Mpc for SN2009ip

Results closely match the standard cosmic distance ladder estimate of 20.4 Mpc

DSM provides a promising alternative for direct distance measurements

Abstract

We demonstrate the applicability of our new method (the Dense Shell Method or DSM) for the determination of astronomical distances by calculating the distance to SN2009ip. The distance to this supernova has been accurately determined in the standard approach via the cosmic distance ladder and has been found to be 20.4 Mpc. Our direct method, assuming the most reasonable parameter values, gives a very close result, namely 20.1+/-0.8 (68% CL) Mpc to SN2009ip.