{"id":36542,"date":"2026-06-08T13:16:40","date_gmt":"2026-06-08T13:16:40","guid":{"rendered":"https:\/\/lamarr-institute.org\/publication\/extreme-blazars-observed-with-magic-second-catalog-release\/"},"modified":"2026-06-08T13:16:40","modified_gmt":"2026-06-08T13:16:40","slug":"extreme-blazars-observed-with-magic-second-catalog-release","status":"publish","type":"publication","link":"https:\/\/lamarr-institute.org\/de\/publication\/extreme-blazars-observed-with-magic-second-catalog-release\/","title":{"rendered":"Extreme Blazars Observed with {MAGIC}: Second Catalog Release"},"content":{"rendered":"<p>Extremely high-peaked {BL} Lac objects &#8211; also named extreme blazars &#8211; are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron emission peaking above $10^{17}$ Hz in X-rays. Such emission is then reprocessed and produces radiation extending deeply into very-high-energy ({VHE}, energy E>100 {GeV}) gamma rays. Observations in this energy band &#8211; optimally investigated by the Imaging Air-Shower Cherenkov telescopes &#8211; are crucial for probing the physical processes that drive their extreme behavior. This study extends our investigation of extreme blazars in the {VHE} gamma-ray range, providing a second new mini-catalog of sources observed by the {MAGIC} telescopes. We report on the monitoring of seven targets between 2017 and 2025, including four newly observed sources and three that have been part of long-term observation campaigns, for a total of approximately 338 hours of observations. The analysis of {MAGIC} data reveals two new {VHE} detections of extreme blazars, along with three additional sources showing hints of {VHE} emission. Joint observations of {MAGIC} and the first Large-Sized Telescope ({LST}-1) also confirmed a new {VHE} extreme blazar. Our results are complemented by simultaneous multiwavelength observations in other energy bands, including optical-{UV}, X-rays, and high-energy gamma rays (100 {MeV}<E<100 {GeV}). We confirm typical behavior of extreme blazars, such as a modest variability and a \"harder-when-brighter\" trend in X-rays across the sample. This new set increases the population of extreme blazars and their broadband analysis confirms the physical properties of these extreme sources.\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Extremely high-peaked {BL} Lac objects &#8211; also named extreme blazars &#8211; are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron emission peaking above $10^{17}$ Hz in X-rays. Such emission is then reprocessed and produces radiation extending deeply into very-high-energy ({VHE}, energy E>100 {GeV}) gamma rays. Observations in this energy band &#8211; optimally investigated by the Imaging Air-Shower Cherenkov telescopes &#8211; are crucial for [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"publication-type":[30],"class_list":["post-36542","publication","type-publication","status-publish","hentry","publication-type-article"],"acf":[],"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/36542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/types\/publication"}],"author":[{"embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/users\/12"}],"version-history":[{"count":0,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/36542\/revisions"}],"wp:attachment":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/media?parent=36542"}],"wp:term":[{"taxonomy":"publication-type","embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication-type?post=36542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}