Photo credit: science.nasa.gov
New Insights from XRISM’s Capture of Cygnus X-3 X-ray Spectrum
The Resolve instrument aboard the XRISM (X-Ray Imaging and Spectroscopy Mission) has successfully obtained an unprecedented X-ray spectrum of Cygnus X-3, a notable binary star system known for its unique characteristics. This newly gathered data reveals intricate details about the ionized gases within this cosmic environment, notably through observed peaks and valleys in the spectrum where X-rays are emitted and absorbed, respectively.
The spectrum spans energies from 2 to 8 keV (kiloelectron volts), illustrating X-ray emissions that surpass visible light by thousands of times. In the full Resolve spectrum, certain lines indicate the presence of elements such as sulfur, argon, and calcium, with notations indicating the number of lost electrons, denoted by Roman numerals. Such spectral analysis allows scientists to deduce the elemental composition and the physical processes occurring within the star system.
In addition to the overall spectral data, a detailed examination of a specific region highlights transitions in the innermost electron shell (K shell) of iron atoms. The interaction of high-energy X-rays or electrons with these iron atoms results in emissions captured between 6.4 and 7 keV. This nuanced information, now visible for the first time through the capabilities of the Resolve instrument, stands to enhance astronomers’ comprehension of Cygnus X-3 and its underlying physics significantly.
The collaborative efforts of JAXA (Japan Aerospace Exploration Agency) and NASA underline the importance of this mission, not only for its scientific contributions but also for fostering international collaboration in aerospace and astrophysics research. The advancements from XRISM are expected to pave the way for future explorations into similar cosmic phenomena.
Source
science.nasa.gov