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Star-Forming Regions
Since the 1980s, the Einstein Observatory has shown that the Young Stellar Objects (YSOs) emit X-rays with luminosities, in the 0.3–8 keV bandpass,...
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In-Orbit Background for X-ray Detectors
In-orbit background is an unavoidable feature of all spaceborne X-ray detectors and arises both from cosmic sources (diffuse or point-like) and from...
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Stellar Coronae
The vast majority of “normal” hydrogen-burning stars are of mass equal to or lower than that of our Sun, and they share with our host star the...
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The Hot Interstellar Medium
The interstellar medium (ISM) of galaxies very often contains a gas component that reaches the temperature of several million degrees, whose physical...
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From the Earliest Seeds to Today’s Supermassive Black Holes
I review scenarios for the assembly of supermassive black holes (MBHs) at the center of galaxies that trace their hierarchical build-up far up in the...
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The Interaction of the Active Nucleus with the Host Galaxy Interstellar Medium
Imaging X-ray spectroscopy of nearby AGNs, mostly with Chandra, has shown that extended soft (<2.5 keV) emission-line-dominated X-ray biconical...
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The Role of Binary Stars in Understanding the Physics and Evolution of Stars
AbstractThe diversity of close binary stars (CBSs) and the rich manifestation of their activity as a result of the interaction of stellar components...
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MAXI: Monitor of All-Sky X-ray Image
Monitor of All-sky X-ray Image (MAXI) is the X-ray all-sky monitor on the International Space Station (ISS). It has been continuously scanning almost...
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Bayesian Analysis of the Data from PoGO+
PoGO+ is a Compton-scattering polarimeter, which measured the linear polarization of hard X-rays (∼20–170 keV) emitted by the Crab nebula/pulsar and...
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Introduction to the Section on Galaxies
The section “Galaxies” of the Handbook of X-ray and Gamma-Ray Astrophysics reviews the impact of high-resolution...
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Lobster Eye X-ray Optics
This chapter describes the history, principles, and recent developments of large field of view X-ray optics based on lobster eye designs. Most of...
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Extrasolar Planets and Star-Planet Interaction
Exoplanets, i.e., planets orbiting the stars other than the Sun, can be studied across the whole electromagnetic spectrum. In the context of X-ray...
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Science with the Daksha high energy transients mission
We present the science case for the proposed Daksha high energy transients mission. Daksha will comprise of two satellites covering the entire sky...
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Athena synergies in the multi-messenger and transient universe
In this paper we explore the scientific synergies between Athena and some of the key multi-messenger facilities that should be operative concurrently...
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Near real-time gravitational wave data analysis of the massive black hole binary with TianQin
Space-borne gravitational wave (GW) detectors can detect the merger of massive black holes. The early warning and localization of GW events before...
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Star-Forming Regions
Since the 1980s, the Einstein Observatory has shown that the Young Stellar Objects (YSOs) emit X-rays with luminosities, in the 0.3–8 keV bandpass,...
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Science with a Small Two-Band UV-Photometry Mission II: Observations of Stars and Stellar Systems
We outline the impact of a small two-band UV-photometry satellite mission on the field of stellar physics, magnetospheres of stars, binaries, stellar...
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Detection of astrophysical gravitational wave sources by TianQin and LISA
TianQin and LISA are space-based laser interferometer gravitational wave (GW) detectors planned to be launched in the mid-2030s. Both detectors will...
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Modeling and Simulating X-ray Spectra
X-ray spectroscopy is a powerful technique for the analysis of the energy distribution of X-rays from astrophysical sources. It allows for the study...
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Modeling and Simulating X-ray Spectra
X-ray spectroscopy is a powerful technique for the analysis of the energy distribution of X-rays from astrophysical sources. It allows for the study...