{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T05:29:20Z","timestamp":1774330160805,"version":"3.50.1"},"reference-count":32,"publisher":"American Astronomical Society","issue":"2","license":[{"start":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T00:00:00Z","timestamp":1678665600000},"content-version":"vor","delay-in-days":12,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T00:00:00Z","timestamp":1678665600000},"content-version":"tdm","delay-in-days":12,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["ApJ"],"published-print":{"date-parts":[[2023,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Dark matter is a key piece of the current cosmological scenario, with weakly interacting massive particles (WIMPs) a leading dark matter candidate. WIMPs have not been detected in their conventional parameter space (100 GeV \u2272<jats:italic>M<\/jats:italic>\n                  <jats:sub>\n                     <jats:italic>\u03c7<\/jats:italic>\n                  <\/jats:sub> \u2272 100 TeV), a mass range accessible with current Imaging Atmospheric Cherenkov Telescopes. As ultraheavy dark matter (UHDM; <jats:italic>M<\/jats:italic>\n                  <jats:sub>\n                     <jats:italic>\u03c7<\/jats:italic>\n                  <\/jats:sub> \u2273 100 TeV) has been suggested as an underexplored alternative to the WIMP paradigm, we search for an indirect dark matter annihilation signal in a higher mass range (up to 30 PeV) with the VERITAS <jats:italic>\u03b3<\/jats:italic>-ray observatory. With 216 hr of observations of four dwarf spheroidal galaxies, we perform an unbinned likelihood analysis. We find no evidence of a <jats:italic>\u03b3<\/jats:italic>-ray signal from UHDM annihilation above the background fluctuation for any individual dwarf galaxy nor for a joint-fit analysis, and consequently constrain the velocity-weighted annihilation cross section of UHDM for dark matter particle masses between 1 TeV and 30 PeV. We additionally set constraints on the allowed radius of a composite UHDM particle.<\/jats:p>","DOI":"10.3847\/1538-4357\/acbc7b","type":"journal-article","created":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T14:09:23Z","timestamp":1678716563000},"page":"101","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":17,"title":["Search for Ultraheavy Dark Matter from Observations of Dwarf Spheroidal Galaxies with VERITAS"],"prefix":"10.3847","volume":"945","author":[{"given":"A.","family":"Acharyya","sequence":"first","affiliation":[]},{"given":"A.","family":"Archer","sequence":"additional","affiliation":[]},{"given":"P.","family":"Bangale","sequence":"additional","affiliation":[]},{"given":"J. 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