{"id":151,"date":"2026-02-09T11:49:02","date_gmt":"2026-02-09T03:49:02","guid":{"rendered":"https:\/\/chronos.phy.ncu.edu.tw\/?page_id=151"},"modified":"2026-02-25T07:37:43","modified_gmt":"2026-02-24T23:37:43","slug":"sensitivity-curve","status":"publish","type":"page","link":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/sensitivity-curve\/","title":{"rendered":"Sensitivity data"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Overview<\/h2>\n\n\n\n

This page provides the official strain sensitivity data of CHRONOS<\/strong>.<\/p>\n\n\n\n

CHRONOS (Cryogenic sub-Hz cROss torsion-bar detector with quantum NOn-demolition Speed meter) is a cryogenic torsion-bar interferometer designed to explore the sub-Hz gravitational-wave band and stochastic gravitational-wave backgrounds.<\/p>\n\n\n\n

The dataset distributed here corresponds to the\u00a0total gravitational-wave strain noise amplitude spectral density (ASD)<\/strong>:S<\/mi>h<\/mi><\/msub>(<\/mo>f<\/mi>)<\/mo><\/mrow><\/msqrt><\/mspace>[<\/mo>1<\/mn>\/<\/mi>H<\/mi>z<\/mi><\/mrow><\/msqrt>]<\/mo><\/mrow><\/semantics><\/math>Sh<\/sub>\u200b(f)\u200b[1\/Hz\u200b]<\/p>\n\n\n\n

This curve represents the quadrature sum of all modeled noise sources in the current CHRONOS configuration.<\/p>\n\n\n\n

\n\n\n\n

Download<\/h2>\n\n\n\n

Data file (ASCII format)<\/strong><\/p>\n\n\n\n

CHRONOS_total_GW_noise_ASD_20260224<\/a>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a><\/div>\n\n\n\n

Columns:<\/p>\n\n\n\n

Column<\/th>Quantity<\/th>Unit<\/th><\/tr><\/thead>
1<\/td>Frequency\u00a0f<\/mi><\/mrow><\/semantics><\/math><\/td>Hz<\/td><\/tr>
2<\/td>Strain ASD\u00a0S<\/mi>h<\/mi><\/msub>(<\/mo>f<\/mi>)<\/mo><\/mrow><\/msqrt><\/mrow><\/semantics><\/math><\/td>1\/\u221aHz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The file includes a header beginning with #<\/code>, which can be ignored by most data-analysis tools.<\/p>\n\n\n\n

\n\n\n\n

Data Description<\/h2>\n\n\n\n
    \n
  • Frequency range: 0.05 Hz \u2013 10 kHz<\/li>\n\n\n\n
  • Quantity: Total strain amplitude spectral density<\/li>\n\n\n\n
  • Detector configuration: Nominal CHRONOS design<\/li>\n\n\n\n
  • Model assumptions: Cryogenic torsion-bar configuration including quantum noise, thermal noise, seismic noise, and Newtonian noise contributions.<\/li>\n<\/ul>\n\n\n\n

    This dataset is intended for:<\/p>\n\n\n\n

      \n
    • Stochastic gravitational-wave background sensitivity studies<\/li>\n\n\n\n
    • Cosmological parameter forecasting<\/li>\n\n\n\n
    • Cross-correlation projections<\/li>\n\n\n\n
    • Detector comparison studies<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n

      Citation Policy<\/h2>\n\n\n\n

      If you use this dataset in scientific publications, please cite the following references.<\/p>\n\n\n\n

      CHRONOS White Paper<\/h3>\n\n\n\n

      Y. Inoue\u00a0et al.<\/em>,
      \u201cCHRONOS: A Cryogenic Sub-Hz Torsion-Bar Speed-Meter for Stochastic Gravitational-Wave Background Searches.\u201d<\/strong>
      CHRONOS White Paper (2026).
      will be released on 2026 Mar.11<\/p>\n\n\n\n

      CHRONOS Main Paper<\/h3>\n\n\n\n

      Y. Inoue\u00a0et al.<\/em>,
      \u201cCHRONOS: Cryogenic sub-Hz cROss torsion bar detector with quantum NOn-demolition Speed meter\u201d<\/strong>
      arXiv: 2509.23172<\/p>\n","protected":false},"excerpt":{"rendered":"Overview This page provides the official strain sensitivity data of CHRONOS. CHRONOS (Cryogenic sub-Hz cROss torsion-bar detector with quantum NOn-demolition Speed meter) is a cryogenic torsion-bar interferometer designed to explore the sub-Hz gravitational-wave band and stochastic gravitational-wave backgrounds. The dataset distributed here corresponds to the\u00a0total gravitational-wave strain noise amplitude spectral density (ASD):Sh(f)[1\/Hz]Sh\u200b(f)\u200b[1\/Hz\u200b] This curve represents the […]","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-151","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/pages\/151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/comments?post=151"}],"version-history":[{"count":4,"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/pages\/151\/revisions"}],"predecessor-version":[{"id":168,"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/pages\/151\/revisions\/168"}],"wp:attachment":[{"href":"https:\/\/chronos.phy.ncu.edu.tw\/index.php\/wp-json\/wp\/v2\/media?parent=151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}