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    "related": [
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            "title": "XRISM's Resolve Instrument Gazes into Cygnus X-3",
            "description": "Cygnus X-3 is a high-mass X-ray binary system consisting of a compact object (likely a black hole) and a Wolf-Rayet star. This artist's concept shows one interpretation of the system. High-resolution X-ray spectroscopy indicates two gas components: a heavy background outflow, or wind, produced by the massive star and a turbulent structure — perhaps a wake carved into the wind — located close to the orbiting companion. As shown here, a black hole's gravity captures some of the wind into an accretion disk around it, and the disk's orbital motion sculpts a path (yellow arc) through the streaming gas. During strong outbursts, the companion emits jets of particles moving near the speed of light, seen here extending above and below the black hole.Credit: NASA’s Goddard Space Flight CenterAlt text: Illustration of the Cygnus X-3 systemImage description: On a cloudy reddish background, a bright blue-white circle — a representation of a hot, bright, massive star — sits near the center. Wisps of blue-white border its edges, and many lines of similar color radiate from it. In the foreground at about 4 o’clock lies a yellowish ring with a black hole in its center. From the ring trails a diffuse yellow arc, sweeping from right to left and exiting at the bottom of the illustration. Extending above and below the black hole are two blue-white triangles representing particle jets. || Cyg_X-3_illustration_4K.jpg (3840x2160) [505.1 KB] || Cyg_X-3_illustration_4K_print.jpg (1024x576) [58.5 KB] || Cyg_X-3_illustration_4K_searchweb.png (320x180) [64.7 KB] || Cyg_X-3_illustration_4K_web.png (320x180) [64.7 KB] || Cyg_X-3_illustration_4K_thm.png (80x40) [6.1 KB] || ",
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                "alt_text": "XRISM’s Resolve instrument has captured the most detailed X-ray spectrum yet acquired of Cygnus X-3. Peaks indicate X-rays emitted by ionized gases, and valleys form where the gases absorb X-rays; many lines are also shifted to both higher and lower energies by gas motions. Top: The full Resolve spectrum, from 2 to 8 keV (kiloelectron volts), tracks X-rays with thousands of times the energy of visible light. Some lines are labeled with the names of the elements that produced them, such as sulfur, argon, and calcium, along with Roman numerals that refer to the number of electrons these atoms have lost. Bottom: A zoom into a region of the spectrum often dominated by features produced by transitions in the innermost electron shell (K shell) of iron atoms. These features form when the atoms interact with high-energy X-rays or electrons and respond by emitting a photon at energies between 6.4 and 7 keV. These details, clearly visible for the first time with XRISM’s Resolve instrument, will help astronomers refine their understanding of this unusual system.Credit: JAXA/NASA/XRISM CollaborationAlt text: XRISM Resolve X-ray spectrum of Cygnus X-3 Image description: Two graphs appear on a dark blue background. The text at the top reads “XRISM Resolve Spectrum of Cygnus X-3.” The top graph, which takes up the upper third of the image, has a lighter blue background that darkens from top to bottom, an even brighter squiggly line that arcs across the graph, and yellow text such as “Sulfur XV” and Calcium XX.” X-ray brightness increases from bottom to top, and X-ray energy (measured in thousands of electron volts, or keV) increases from left to right. An orange box labeled “Area of detail” surrounds a series of peaks and valleys near the right end and identifies the region shown in the bottom graph. The lower chart is labeled “Iron K-alpha region” and shows prominent emission and absorption features produced by iron. ",
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