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                         Zweizig, J. and Collaboration, LIGO Sci and Collaboration, Virgo",
          affiliation = "{} and {} and {} and {} and {} and {} and {} and {} and {} and {} 
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                         and {} and {} and {} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Directed search for continuous gravitational waves from the 
                         Galactic center",
              journal = "Physical Review D",
                 year = "2013",
               volume = "88",
               number = "10",
                month = "Nov.",
             keywords = "gravitational waves, galactic center, LIGO.",
             abstract = "We present the results of a directed search for continuous 
                         gravitational waves from unknown, isolated neutron stars in the 
                         Galactic center region, performed on two years of data from LIGO's 
                         fifth science run from two LIGO detectors. The search uses a 
                         semicoherent approach, analyzing coherently 630 segments, each 
                         spanning 11.5 hours, and then incoherently combining the results 
                         of the single segments. It covers gravitational wave frequencies 
                         in a range from 78 to 496 Hz and a frequency-dependent range of 
                         first-order spindown values down to -7.86 x 10(-8) Hz/s at the 
                         highest frequency. No gravitational waves were detected. The 
                         90\\% confidence upper limits on the gravitational wave 
                         amplitude of sources at the Galactic center are similar to 3.35 x 
                         10(-25) for frequencies near 150 Hz. These upper limits are the 
                         most constraining to date for a large-parameter-space search for 
                         continuous gravitational wave signals.",
                  doi = "10.1103/PhysRevD.88.102002",
                  url = "http://dx.doi.org/10.1103/PhysRevD.88.102002",
                 issn = "1550-2368 and 1550-7998",
                label = "isi 2014-01",
           targetfile = "PhysRevD.88.102002.pdf",
        urlaccessdate = "21 jan. 2021"