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We present the results of a semicoherent search for continuous
gravitational waves from the low-mass X-ray binary Scorpius X-1, using
data from the first Advanced LIGO observing run. The search method uses
details of the modeled, parametrized continuous signal to combine
coherently data separated by less than a specified coherence time, which
can be adjusted to trade off sensitivity against computational cost. A
search was conducted over the frequency range 25-2000 Hz, spanning the
current observationally constrained range of binary orbital parameters.
No significant detection candidates were found, and frequency-dependent
upper limits were set using a combination of sensitivity estimates and
simulated signal injections. The most stringent upper limit was set at
175 Hz, with comparable limits set across the most sensitive frequency
range from 100 to 200 Hz. At this frequency, the 95\% upper limit on the
signal amplitude h(0) is 2.3 x 10(-25) marginalized over the unknown
inclination angle of the neutron star's spin, and 8.0 x 10(-26) assuming
the best orientation (which results in circularly polarized
gravitational waves). These limits are a factor of 3-4 stronger than
those set by other analyses of the same data, and a factor of similar to
7 stronger than the best upper limits set using data from Initial LIGO
science runs. In the vicinity of 100 Hz, the limits are a factor of
between 1.2 and 3.5 above the predictions of the torque balance model,
depending on the inclination angle; if the most likely inclination angle
of 44 degrees is assumed, they are within a factor of 1.7.
Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-based
Cross-correlation Search in Advanced LIGO Data
Abbott;B. P. and Abbott;R. and Abbott;T. D. and Acernese;F. and Ackley;K. and Adams;C. and Adams;T. and Addesso;P. and Adhikari;R. X. and Adya;V. B. and Affeldt;C. and Afrough;M. and Agarwal;B. and Agathos;M. and Agatsuma;K. and Aggarwal;N. and Aguiar;O. D. and Aiello;L. and Ain;A. and Ajith;P. and Allen;B. and Allen;G. and Allocca;A. and Altin;P. A. and Amato;A. and Ananyeva;A. and Anderson;S. B. and Anderson;W. G. and Antier;S. and Appert;S. and Arai;K. and Araya;M. C. and Areeda;J. S. and Arnaud;N. and Arun;K. G. and Ascenzi;S. and Ashton;G. and Ast;M. and Aston;S. M. and Astone;P. and Aufmuth;P. and Aulbert;C. and AultONeal;K. and Avila-Alvarez;A. and Babak;S. and Bacon;P. and Bader;M. K. M. and Bae;S. and Baker;P. T. and Baldaccini;F. and Ballardin;G. and Ballmer;S. W. and Banagiri;S. and Barayoga;J. C. and Barclay;S. E. and Barish;B. C. and Barker;D. and Barone;F. and Barr;B. and Barsotti;L. and Barsuglia;M. and Barta;D. and Bartlett;J. and Bartos;I. and Bassiri;R. and Basti;A. and Batch;J. C. and Baune;C. and Bawaj;M. and Bazzan;M. and Becsy;B. and Beer;C. and Bejger;M. and Belahcene;I. and Bell;A. S. and Berger;B. K. and Bergmann;G. and Berry;C. P. L. and Bersanetti;D. and Bertolini;A. and Betzwieser;J. and Bhagwat;S. and Bhandare;R. and Bilenko;I. A. and Billingsley;G. and Billman;C. R. and Birch;J. and Birney;R. and Birnholtz;O. and Biscans;S. and Bisht;A. and Bitossi;M. and Biwer;C. and Bizouard;M. A. and Blackburn;J. K. and Blackman;J. and Blair;C. D. and Blair;D. G. and Blair;R. M. and Bloemen;S. and Bock;O. and Bode;N. and Boer;M. and Bogaert;G. and Bohe;A. and Bondu;F. and Bonnand;R. and Boom;B. A. and Bork;R. and Boschi;V. and Bose;S. and Bouffanais;Y. and Bozzi;A. and Bradaschia;C. and Brady;P. R. and Braginsky;V. B. and Branchesi;M. and Brau;J. E. and Briant;T. and Brillet;A. and Brinkmann;M. and Brisson;V. and Brockill;P. and Broida;J. E. and Brooks;A. F. and Brown;D. A. and Brown;D. D. and Brown;N. M. and Brunett;S. and Buchanan;C. C. and Buikema;A. and Bulik;T. and Bulten;H. J. and Buonanno;A. and Buskulic;D. and Buy;C. and Byer;R. L. and Cabero;M. and Cadonati;L. and Cagnoli;G. and Cahillane;C. and Bustillo;J. Calderon and Callister;T. A. and Calloni;E. and Camp;J. B. and Canepa;M. and Canizares;P. and Cannon;K. C. and Cao;H. and Cao;J. and Capano;C. D. and Capocasa;E. and Carbognani;F. and Caride;S. and Carney;M. F. and Diaz;J. Casanueva and Casentini;C. and Caudill;S. and Cavaglia;M. and Cavalier;F. and Cavalieri;R. and Cella;G. and Cepeda;C. B. and Baiardi;L. Cerboni and Cerretani;G. and Cesarini;E. and Chamberlin;S. J. and Chan;M. and Chao;S. and Charlton;P. and Chassande-Mottin;E. and Chatterjee;D. and Chatziioannou;K. and Cheeseboro;B. D. and Chen;H. Y. and Chen;Y. and Cheng;H. -.P. and Chincarini;A. and Chiummo;A. and Chmiel;T. and Cho;H. S. and Cho;M. and Chow;J. H. and Christensen;N. and Chu;Q. and Chua;A. J. K. and Chua;S. and Chung;A. K. W. and Chung;S. and Ciani;G. and Ciolfi;R. and Cirelli;C. E. and Cirone;A. and Clara;F. and Clark;J. A. and Cleva;F. and Cocchieri;C. and Coccia;E. and Cohadon;P. -.F. and Colla;A. and Collette;C. G. and Cominsky;L. R. and Constancio;J.r.;M. and Conti;L. and Cooper;S. J. and Corban;P. and Corbitt;T. R. and Corley;K. R. and Cornish;N. and Corsi;A. and Cortese;S. and Costa;C. A. and Coughlin;M. W. and Coughlin;S. B. and Coulon;J. -.P. and Countryman;S. T. and Couvares;P. and Covas;P. B. and Cowan;E. E. and Coward;D. M. and Cowart;M. J. and Coyne;D. C. and Coyne;R. and Creighton;J. D. E. and Creighton;T. D. and Cripe;J. and Crowder;S. G. and Cullen;T. J. and Cumming;A. and Cunningham;L. and Cuoco;E. and Dal Canton;T. and Danilishin;S. L. and D'Antonio;S. and Danzmann;K. and Dasgupta;A. and Da Silva Costa;C. F. and Dattilo;V. and Dave;I. and Davier;M. and Davis;D. and Daw;E. J. and Day;B. and De;S. and Debra;D. and Deelman;E. and Degallaix;J. and De laurentis;M. and Deleglise;S. and Del Pozzo;W. and Denker;T. and Dent;T. and Dergachev;V. and De Rosa;R. and DeRosa;R. T. and DeSalvo;R. and Devenson;J. and Devine;R. C. and Dhurandhar;S. and Diaz;M. C. and Di Fiore;L. and Di Giovanni;M. and Di Girolamo;T. and Di Lieto;A. and Di Pace;S. and Di Palma;I. and Di Renzo;F. and Doctor;Z. and Dolique;V. and Donovan;F. and Dooley;K. L. and Doravari;S. and Dorrington;I. and Douglas;R. and Alvarez;M. Dovale and Downes;T. P. and Drago;M. and Drever;R. W. P. and Driggers;J. C. and Du;Z. and Ducrot;M. and Duncan;J. and Dwyer;S. E. and Edo;T. B. and Edwards;M. C. and Effler;A. and Eggenstein;H. -.B. and Ehrens;P. and Eichholz;J. and Eikenberry;S. S. and Eisenstein;R. A. and Essick;R. C. and Etienne;Z. B. and Etzel;T. and Evans;M. and Evans;T. M. and Factourovich;M. and Fafone;V. and Fair;H. and Fairhurst;S. and Fan;X. and Farinon;S. and Farr;B. and Farr;W. M. and Fauchon-Jones;E. J. and Favata;M. and Fays;M. and Fehrmann;H. and Feicht;J. and Fejer;M. M. and Fernandez-Galiana;A. and Ferrante;I. and Ferreira;E. C. and Ferrini;F. and Fidecaro;F. and Fiori;I. and Fiorucci;D. and Fisher;R. P. and Flaminio;R. and Fletcher;M. and Fong;H. and Forsyth;P. W. F. and Forsyth;S. S. and Fournier;J. -.D. and Frasca;S. and Frasconi;F. and Frei;Z. and Freise;A. and Frey;R. and Frey;V. and Fries;E. M. and Fritschel;P. and Frolov;V. V. and Fulda;P. and Fyffe;M. and Gabbard;H. and Gabel;M. and Gadre;B. U. and Gaebel;S. M. and Gair;J. R. and Galloway;D. K. and Gammaitoni;L. and Ganija;M. R. and Gaonkar;S. G. and Garufi;F. and Gaudio;S. and Gaur;G. and Gayathri;V. and Gehrels;N. and Gemme;G. and Genin;E. and Gennai;A. and George;D. and George;J. and Gergely;L. and Germain;V. and Ghonge;S. and Ghosh;Abhirup and Ghosh;Archisman and Ghosh;S. and Giaime;J. A. and Giardina;K. D. and Giazotto;A. and Gill;K. and Glover;L. and Goetz;E. and Goetz;R. and Gomes;S. and Gonzlez;G. and Castro;J. M. Gonzalez and Gopakumar;A. and Gorodetsky;M. L. and Gossan;S. E. and Gosselin;M. and Gouaty;R. and Grado;A. and Graef;C. and Granata;M. and Grant;A. and Gras;S. and Gray;C. and Greco;G. and Green;A. C. and Groot;P. and Grote;H. and Grunewald;S. and Gruning;P. and Guidi;G. M. and Guo;X. and Gupta;A. and Gupta;M. K. and Gushwa;K. E. and Gustafson;E. K. and Gustafson;R. and Hall;B. R. and Hall;E. D. and Hammond;G. and Haney;M. and Hanke;M. M. and Hanks;J. and Hanna;C. and Hannuksela;O. A. and Hanson;J. and Hardwick;T. and Harms;J. and Harry;G. M. and Harry;I. W. and Hart;M. J. and Haster;C. -.J. and Haughian;K. and Healy;J. and Heidmann;A. and Heintze;M. C. and Heitmann;H. and Hello;P. and Hemming;G. and Hendry;M. and Heng;I. S. and Hennig;J. and Henry;J. and Heptonstall;A. W. and Heurs;M. and Hild;S. and Hoak;D. and Hofman;D. and Holt;K. and Holz;D. E. and Hopkins;P. and Horst;C. and Hough;J. and Houston;E. A. and Howell;E. J. and Hu;Y. M. and Huerta;E. A. and Huet;D. and Hughey;B. and Husa;S. and Huttner;S. H. and Huynh-Dinh;T. and Indik;N. and Ingram;D. R. and Inta;R. and Intini;G. and Isa;H. N. and Isac;J. -.M. and Isi;M. and Iyer;B. R. and Izumi;K. and Jacqmin;T. and Jani;K. and Jaranowski;P. and Jawahar;S. and Jimenez-Forteza;F. and Johnson;W. W. and Jones;D. I. and Jones;R. and Jonker;R. J. G. and Ju;L. and Junker;J. and Kalaghatgi;C. V. and Kalogera;V. and Kandhasamy;S. and Kang;G. and Kanner;J. B. and Karki;S. and Karvinen;K. S. and Kasprzack;M. and Katolik;M. and Katsavounidis;E. and Katzman;W. and Kaufer;S. and Kawabe;K. and Kefelian;F. and Keitel;D. and Kemball;A. J. and Kennedy;R. and Kent;C. and Key;J. S. and Khalili;F. Y. and Khan;I. and Khan;S. and Khan;Z. and Khazanov;E. A. and Kijbunchoo;N. and Kim;Chunglee and Kim;J. C. and Kim;W. and Kim;W. S. and Kim;Y. -.M. and Kimbrell;S. J. and King;E. J. and King;P. J. and Kirchhoff;R. and Kissel;J. S. and Kleybolte;L. and Klimenko;S. and Koch;P. and Koehlenbeck;S. M. and Koley;S. and Kondrashov;V. and Kontos;A. and Korobko;M. and Korth;W. Z. and Kowalska;I. and Kozak;D. B. and Krmer;C. and Kringel;V. and Krishnan;B. and Krolak;A. and Kuehn;G. and Kumar;P. and Kumar;R. and Kumar;S. and Kuo;L. and Kutynia;A. and Kwang;S. and Lackey;B. D. and Lai;K. H. and Landry;M. and Lang;R. N. and Lange;J. and Lantz;B. and Lanza;R. K. and Lartaux-Vollard;A. and Lasky;P. D. and Laxen;M. and Lazzarini;A. and Lazzaro;C. and Leaci;P. and Leavey;S. and Lee;C. H. and Lee;H. K. and Lee;H. M. and Lee;H. W. and Lee;K. and Lehmann;J. and Lenon;A. and Leonardi;M. and Leroy;N. and Letendre;N. and Levin;Y. and Li;T. G. F. and Libson;A. and Littenberg;T. B. and Liu;J. and Lo;R. K. L. and Lockerbie;N. A. and London;L. T. and Lord;J. E. and Lorenzini;M. and Loriette;V. and Lormand;M. and Losurdo;G. and Lough;J. D. and Lousto;C. O. and Lovelace;G. and Luck;H. and Lumaca;D. and Lundgren;A. P. and Lynch;R. and Ma;Y. and Macfoy;S. and Machenschalk;B. and MacInnis;M. and Macleod;D. M. and Hernandez;I. Magana and Magana-Sandoval;F. and Zertuche;L. Magaa and Magee;R. M. and Majorana;E. and Maksimovic;I. and Man;N. and Mandic;V. and Mangano;V. and Mansell;G. L. and Manske;M. and Mantovani;M. and;F. Marchesoni;and Marion;F. and Marka;S. and Marka;Z. and Markakis;C. and Markosyan;A. S. and Maros;E. and Martelli;F. and Martellini;L. and Martin;I. W. and Martynov;D. V. and Mason;K. and Masserot;A. and Massinger;T. J. and Masso-Reid;M. and Mastrogiovanni;S. and Matas;A. and Matichard;F. and Matone;L. and Mavalvala;N. and Mayani;R. and Mazumder;N. and McCarthy;R. and McClelland;D. E. and McCormick;S. and McCuller;L. and McGuire;S. C. and McIntyre;G. and McIver;J. and McManus;D. J. and McRae;T. and McWilliams;S. T. and Meacher;D. and Meadors;G. D. and Meidam;J. and Mejuto-Villa;E. and Melatos;A. and Mendell;G. and Mercer;R. A. and Merilh;E. L. and Merzougui;M. and Meshkov;S. and Messenger;C. and Messick;C. and Metzdorff;R. and Meyers;P. M. and Mezzani;F. and Miao;H. and Michel;C. and Middleton;H. and Mikhailov;E. E. and Milano;L. and Miller;A. L. and Miller;A. and Miller;B. B. and Miller;J. and Millhouse;M. and Minazzoli;O. and Minenkov;Y. and Ming;J. and Mishra;C. and Mitra;S. and Mitrofanov;V. P. and Mitselmakher;G. and Mittleman;R. and Moggi;A. and Mohan;M. and Mohapatra;S. R. P. and Montani;M. and Moore;B. C. and Moore;C. J. and Moraru;D. and Moreno;G. and Morriss;S. R. and Mours;B. and Mow-Lowry;C. M. and Mueller;G. and Muir;A. W. and Mukherjee;Arunava and Mukherjee;D. and Mukherjee;S. and Mukund;N. and Mullavey;A. and Munch;J. and Muniz;E. A. M. and Murray;P. G. and Napier;K. and Nardecchia;I. and Naticchioni;L. and Nayak;R. K. and Nelemans;G. and Nelson;T. J. N. and Neri;M. and Nery;M. and Neunzert;A. and Newport;J. M. and Newton;G. and Ng;K. K. Y. and Nguyen;T. T. and Nichols;D. and Nielsen;A. B. and Nissanke;S. and Nitz;A. and Noack;A. and Nocera;F. and Nolting;D. and Normandin;M. E. N. and Nuttall;L. K. and Oberling;J. and Ochsner;E. and Oelker;E. and Ogin;G. H. and Oh;J. J. and Oh;S. H. and Ohme;F. and Oliver;M. and Oppermann;P. and Oram;Richard J. and O'Reilly;B. and Ormiston;R. and Ortega;L. F. and O'Shaughnessy;R. and Ottaway;D. J. and Overmier;H. and Owen;B. J. and Pace;A. E. and Page;J. and Page;M. A. and Pai;A. and Pai;S. A. and Palamos;J. R. and Palashov;O. and Palomba;C. and Pal-Singh;A. and Pan;H. and Pang;B. and Pang;P. T. H. and Pankow;C. and Pannarale;F. and Pant;B. C. and Paoletti;F. and Paoli;A. and Papa;M. A. and Paris;H. R. and Parker;W. and Pascucci;D. and Pasqualetti;A. and Passaquieti;R. and Passuello;D. and Patricelli;B. and Pearlstone;B. L. and Pedraza;M. and Pedurand;R. and Pekowsky;L. and Pele;A. and Penn;S. and Perez;C. J. and Perreca;A. and Perri;L. M. and Pfeiffer;H. P. and Phelps;M. and Piccinni;O. J. and Pichot;M. and Piergiovanni;F. and Pierro;V. and Pillant;G. and Pinard;L. and Pinto;I. M. and Pitkin;M. and Poggiani;R. and Popolizio;P. and Porter;E. K. and Post;A. and Powell;J. and Prasad;J. and Pratt;J. W. W. and Predoi;V. and Prestegard;T. and Prijatelj;M. and Principe;M. and Privitera;S. and Prix;R. and Prodi;G. A. and Prokhorov;L. G. and Puncken;O. and Punturo;M. and Puppo;P. and Prrer;M. and Qi;H. and Qin;J. and Qiu;S. and Quetschke;V. and Quintero;E. A. and Quitzow-James;R. and Raab;F. J. and Rabeling;D. S. and Radkins;H. and Raffai;P. and Raja;S. and Rajan;C. and Rakhmanov;M. and Ramirez;K. E. and Rapagnani;P. and Raymond;V. and Razzano;M. and Read;J. and Regimbau;T. and Rei;L. and Reid;S. and Reitze;D. H. and Rew;H. and Reyes;S. D. and Ricci;F. and Ricker;P. M. and Rieger;S. and Riles;K. and Rizzo;M. and Robertson;N. A. and Robie;R. and Robinet;F. and Rocchi;A. and Rolland;L. and Rollins;J. G. and Roma;V. J. and Romano;R. and Romel;C. L. and Romie;J. H. and Rosinska;D. and Ross;M. P. and Rowan;S. and Ruediger;A. and Ruggi;P. and Ryan;K. and Rynge;M. and Sachdev;S. and Sadecki;T. and Sadeghian;L. and Sakellariadou;M. and Salconi;L. and Saleem;M. and Salemi;F. and Samajdar;A. and Sammut;L. and Sampson;L. M. and Sanchez;E. J. and Sandberg;V. and Sandeen;B. and Sanders;J. R. and Sassolas;B. and Sathyaprakash;B. S. and Saulson;P. R. and Sauter;O. and Savage;R. L. and Sawadsky;A. and Schale;P. and Scheuer;J. and Schmidt;E. and Schmidt;J. and Schmidt;P. and Schnabel;R. and Schofield;R. M. S. and Schoenbeck;A. and Schoenbeck;A. and Schreiber;E. and Schuette;D. and Schulte;B. W. and Schutz;B. F. and Schwalbe;S. G. and Scott;J. and Scott;S. M. and Seidel;E. and Sellers;D. and Sengupta;A. S. and Sentenac;D. and Sequino;V. and Sergeev;A. and Shaddock;D. A. and Shaffer;T. J. and Shah;A. A. and Shahriar;M. S. and Shao;L. and Shapiro;B. and Shawhan;P. and Sheperd;A. and Shoemaker;D. H. and Shoemaker;D. M. and Siellez;K. and Siemens;X. and Sieniawska;M. and Sigg;D. and Silva;A. D. and Singer;A. and Singer;L. P. and Singh;A. and Singh;R. and Singhal;A. and Sintes;A. M. and Slagmolen;B. J. J. and Smith;B. and Smith;J. R. and Smith;R. J. E. and Son;E. J. and Sonnenberg;J. A. and Sorazu;B. and Sorrentino;F. and Souradeep;T. and Spencer;A. P. and Srivastava;A. K. and Staley;A. and Steinke;M. and Steinlechner;J. and Steinlechner;S. and Steinmeyer;D. and Stephens;B. C. and Stone;R. and Strain;K. A. and Stratta;G. and Strigin;S. E. and Sturani;R. and Stuver;A. L. and Summerscales;T. Z. and Sun;L. and Sunil;S. and Sutton;P. J. and Swinkels;B. L. and Szczepanczyk;M. J. and Tacca;M. and Talukder;D. and Tanner;D. B. and Tapai;M. and Taracchini;A. and Taylor;J. A. and Taylor;R. and Theeg;T. and Thomas;E. G. and Thomas;M. and Thomas;P. and Thorne;K. A. and Thorne;K. S. and Thrane;E. and Tiwari;S. and Tiwari;V. and Tokmakov;K. V. and Toland;K. and Tonelli;M. and Tornasi;Z. and Torrie;C. I. and Tayra;D. and Travasso;F. and Traylor;G. and Trifiro;D. and Trinastic;J. and Tringali;M. C. and Trozzo;L. and Tsang;K. W. and Tse;M. and Tso;R. and Tuyenbayev;D. and Ueno;K. and Ugolini;D. and Unnikrishnan;C. S. and Urban;A. L. and Usman;S. A. and Vahi;K. and Vahlbruch;H. and Vajente;G. and Valdes;G. and Vallisneri;M. and van Bakel;N. and van Beuzekom;M. and van den Brand;J. F. J. and Van den Broeck;C. and Vander-Hyde;D. C. and van der Schaaf;L. and Van Heijningen;J. V. and van Veggel;A. A. and Vardaro;M. and Varma;V. and Vass;S. and Vasuth;M. and Vecchio;A. and Vedovato;G. and Veitch;J. and Veitch;P. J. and Venkateswara;K. and Venugopalan;G. and Verkindt;D. and Vetrano;F. and Vicere;A. and Viets;A. D. and Vinciguerra;S. and Vine;D. J. and Vinet;J. -.Y. and Vitale;S. and Vo;T. and Vocca;H. and Vorvick;C. and Voss;D. V. and Vousden;W. D. and Vyatchanin;S. P. and Wade;A. R. and Wade;L. E. and Wade;M. and Walet;R. and Walker;M. and Wallace;L. and Walsh;S. and Wang;G. and Wang;H. and Wang;J. Z. and Wang;M. and Wang;Y. -.F. and Wang;Y. and Ward;R. L. and Warner;J. and Was;M. and Watchi;J. and Weaver;B. and Wei;L. -.W. and Weinert;M. and Weinstein;A. J. and Weiss;R. and Wen;L. and Wessel;E. K. and Wessels;P. and Westphal;T. and Wette;K. and Whelan;J. T. and Whiting;B. F. and Whittle;C. and Williams;D. and Williams;R. D. and Williamson;A. R. and Willis;J. L. and Willke;B. and Wimmer;M. H. and Winkler;W. and Wipf;C. C. and Wittel;H. and Woan;G. and Woehler;J. and Wofford;J. and Wong;K. W. K. and Worden;J. and Wright;J. L. and Wu;D. S. and Wu;G. and Yam;W. and Yamamoto;H. and Yancey;C. C. and Yap;M. J. and Yu;Hang and Yu;Haocun and Yvert;M. and Zanolin;M. and Zelenova;T. and Zendri;J. -.P. and Zevin;M. and Zhang;L. and Zhang;M. and Zhang;T. and Zhang;Y. -.H. and Zhao;C. and Zhou;M. and Zhou;Z. and Zhu;X. J. and Zucker;M. E. and Zweizig;J. and Steeghs;D. and Wang;L. and LIGO Sci Collaboration \& Virgo
2017-01-01
Abstract
We present the results of a semicoherent search for continuous
gravitational waves from the low-mass X-ray binary Scorpius X-1, using
data from the first Advanced LIGO observing run. The search method uses
details of the modeled, parametrized continuous signal to combine
coherently data separated by less than a specified coherence time, which
can be adjusted to trade off sensitivity against computational cost. A
search was conducted over the frequency range 25-2000 Hz, spanning the
current observationally constrained range of binary orbital parameters.
No significant detection candidates were found, and frequency-dependent
upper limits were set using a combination of sensitivity estimates and
simulated signal injections. The most stringent upper limit was set at
175 Hz, with comparable limits set across the most sensitive frequency
range from 100 to 200 Hz. At this frequency, the 95\% upper limit on the
signal amplitude h(0) is 2.3 x 10(-25) marginalized over the unknown
inclination angle of the neutron star's spin, and 8.0 x 10(-26) assuming
the best orientation (which results in circularly polarized
gravitational waves). These limits are a factor of 3-4 stronger than
those set by other analyses of the same data, and a factor of similar to
7 stronger than the best upper limits set using data from Initial LIGO
science runs. In the vicinity of 100 Hz, the limits are a factor of
between 1.2 and 3.5 above the predictions of the torque balance model,
depending on the inclination angle; if the most likely inclination angle
of 44 degrees is assumed, they are within a factor of 1.7.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11581/405225
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.