About the Author
Jose Ybarra is an astrophysicist, science communicator, and author of scientific thrillers. He holds a Ph.D. in astrophysics from the University of California, Berkeley, where his research focused on dark matter detection methods and the dynamics of galaxy clusters. He has published over a dozen peer-reviewed papers in journals such as *The Astrophysical Journal* and *Physical Review Letters*, and his work has been cited in major media outlets including *Nature* and *The New York Times*.
Before turning to fiction, Ybarra worked as a data scientist at the Square Kilometre Array (SKA) project, where he helped develop algorithms for detecting faint radio signals from the early universe. He also served as a science consultant for several documentary series, including *The Universe* and *Cosmos: Possible Worlds*. His short fiction has appeared in *Analog Science Fiction and Fact*, *Clarkesworld*, and *Lightspeed*, and his story “The False Vacuum” was a finalist for the 2021 Theodore Sturgeon Award.
*The Dark Matter Signal* is his debut novel, inspired by his own research and by the real-world tensions between open science and national security. He lives in Boulder, Colorado, with his wife and two children, where he enjoys hiking, amateur radio astronomy, and teaching physics at the University of Colorado. He is currently at work on the sequel, *The Quantum Echo*, and a non-fiction book about the future of dark matter exploration. Visit his website at www.joseybarraauthor.com for updates, behind-the-scenes content, and a free short story set in the same universe.