Polar-Areas Stellar-Imaging in Polarisation High-Accuracy Experiment, commonly known as PASIPHAE, is an ambitious sky-survey project that delves into the mysteries of the cosmos by examining the polarisation of light from distant stars. The project’s name pays homage to its mythological roots, inspired by Pasiphae, the daughter of the Greek Sun God Helios. This international initiative is set to offer groundbreaking insights into the magnetic fields that pervade the interstellar medium.
Overview of the PASIPHAE Project
PASIPHAE is a cutting-edge astronomical venture that brings together experts and technology from across the globe to map the magnetic fields of the Milky Way. This survey will employ two sophisticated optical polarimeters, strategically located to cover both hemispheres of the sky. By capturing the polarisation of starlight, PASIPHAE aims to construct a comprehensive map of the magnetic fields that influence the structure and dynamics of our galaxy.
Instrumentation and Technology
The heart of the PASIPHAE project lies in its use of the Wide Area Linear Optical Polarimeter (WALOP). This instrument is designed to detect and measure the polarisation of light with unprecedented precision. With one polarimeter positioned in the northern hemisphere and the other in the south, the project ensures full sky coverage. These polarimeters are equipped with state-of-the-art detectors and optics, enabling them to capture the subtle nuances of polarised light from a multitude of stars.
Data Collection and Mapping
The main objective of PASIPHAE is to collect polarimetric data from stars scattered across the night sky. This data is crucial for understanding the alignment and intensity of magnetic fields that thread through the interstellar medium. By analyzing the polarisation patterns, astronomers can trace the magnetic field lines and create a topographical map of these invisible structures. This map will serve as a key tool for studying various astrophysical phenomena, including star formation and the propagation of cosmic rays.
Scientific Goals and Implications
PASIPHAE’s scientific goals are far-reaching and have significant implications for the field of astrophysics. By mapping the galactic magnetic fields, the project will provide insights into the role these fields play in the evolution of galaxies and the lifecycle of stars. It will also shed light on the interaction between light and matter in space, contributing to our fundamental understanding of the universe. Moreover, this survey has the potential to inform and enhance models of the large-scale structure of the cosmos.
Collaboration and Global Participation
The success of the PASIPHAE project relies on the collaboration of a diverse team of scientists, engineers, and institutions worldwide. This international effort not only combines expertise from different disciplines but also fosters a spirit of cooperation in the pursuit of scientific discovery. The global participation ensures that the project benefits from a wide range of perspectives and skills, ultimately enriching the quality and scope of the research findings.
In summary, the PASIPHAE project represents a monumental step forward in the study of cosmic magnetism. Through meticulous observation and advanced technology, it promises to unveil the hidden magnetic tapestry of the Milky Way, offering a deeper understanding of the universe and its underlying forces. As the project progresses, the astronomical community eagerly anticipates the wealth of data and insights that will emerge from this high-precision survey of the polarised heavens.
