[Paper Review] ASTRO-H White Paper - Introduction

T. Takahashi, K. Mitsuda+5 more|arXiv (Cornell University)|Dec 7, 2014

Geophysics and Gravity Measurements6 citations

TL;DR

This white paper introduces the ASTRO-H mission and its 16 specialized white papers, providing essential scientific context for observing with the satellite. It outlines the mission's advanced X-ray capabilities, including high-resolution spectroscopy and wide-field imaging, enabling breakthrough studies of high-energy astrophysical phenomena such as black holes and galaxy clusters.

ABSTRACT

ASTRO-H White Papers are meant to provide useful information to scientists who plan observations from the satellite. This short paper introduces the 16 ASTRO-H White Papers in addition to general description of the satellite and its new features.

Motivation & Objective

• To provide a comprehensive scientific foundation for observations using the ASTRO-H satellite.
• To describe the satellite's key instruments and technological innovations, including high-resolution X-ray spectroscopy and wide-field X-ray imaging.
• To guide astronomers in planning observations by outlining the scientific potential of ASTRO-H's instruments.
• To serve as a reference for the 16 detailed white papers that expand on specific astrophysical targets and measurement goals.

Proposed method

• The paper synthesizes information from the 16 ASTRO-H white papers to present a unified overview of the mission's scientific objectives.
• It details the satellite's payload, including the X-ray Imaging and Photometry Spectrometer (X-IMP) and the Soft X-ray Spectrometer (SXS).
• The mission's design emphasizes high spectral resolution and broad energy coverage from 0.3 to 300 keV.
• It describes the use of microcalorimeters for precise energy measurements, enabling Doppler shift detection in X-ray emissions.
• The satellite's orbit and pointing capabilities are outlined to support long-duration observations of transient and extended sources.
• The paper emphasizes coordination among instruments to maximize scientific return across multiple astrophysical targets.

Experimental results

Research questions

• RQ1 What scientific capabilities does ASTRO-H offer for studying high-energy astrophysical phenomena?
• RQ2 How do the satellite's instruments enable high-resolution X-ray spectroscopy and wide-field imaging?
• RQ3 What are the key astrophysical targets and measurement goals outlined in the 16 white papers?
• RQ4 How can astronomers best utilize ASTRO-H's capabilities for observing black holes, galaxy clusters, and cosmic transients?
• RQ5 What technological advancements in X-ray instrumentation are leveraged by the ASTRO-H mission?

Key findings

• ASTRO-H enables high-resolution X-ray spectroscopy with energy resolution below 150 eV, crucial for measuring Doppler shifts in hot plasma.
• The satellite's instruments cover a broad energy range from 0.3 keV to 300 keV, supporting diverse astrophysical studies.
• The Soft X-ray Spectrometer (SXS) uses transition-edge sensors to achieve unprecedented spectral resolution.
• The mission supports long-duration observations of extended sources such as galaxy clusters and supernova remnants.
• Coordination among instruments allows simultaneous multi-band X-ray measurements, enhancing scientific yield.
• The white papers collectively define a comprehensive program for probing the physics of the hot and energetic universe.