LIGO Detector Characterization in the first half of the fourth Observing run

S. Soni; B. K. Berger; D. Davis; F. Di Renzo; A. Effler; T. A. Ferreira; J. Glanzer; E. Goetz; G. González; A. Helmling-Cornell; B. Hughey; R. Huxford; B. Mannix; G. Mo; D. Nandi; A. Neunzert; S. Nichols; K. Pham; A. I. Renzini; R. M.S. Schofield; A. Stuver; M. Trevor; S. Álvarez-López; R. Beda; C. P.L. Berry; S. Bhuiyan; L. Blagg; R. Bruntz; S. Callos; M. Chan; P. Charlton; N. Christensen; G. Connolly; R. Dhatri; J. Ding; V. Garg; K. Holley-Bockelmann; S. Hourihane; K. Jani; K. Janssens; S. Jarov; A. M. Knee; A. Lattal; Y. Lecoeuche; T. Littenberg; A. Liyanage; B. Lott; R. Macas; D. Malakar; K. McGowan; J. McIver; M. Millhouse; L. Nuttall; D. Nykamp; I. Ota; C. Rawcliffe; B. Scully; J. Tasson; A. Tejera; S. Thiele; R. Udall; C. Winborn; Z. Yarbrough; Z. Zhang; Y. Zheng; R. Abbott; I. Abouelfettouh; R. X. Adhikari; A. Ananyeva; S. Appert; K. Arai; N. Aritomi; S. M. Aston; M. Ball; S. W. Ballmer; D. Barker; L. Barsotti; J. Betzwieser; G. Billingsley; S. Biscans; N. Bode; E. Bonilla; V. Bossilkov; A. Branch; A. F. Brooks; D. D. Brown; J. Bryant; C. Cahillane; H. Cao; E. Capote; F. Clara; J. Collins; C. M. Compton; R. Cottingham; D. C. Coyne; R. Crouch; J. Csizmazia; T. J. Cullen; L. P. Dartez; N. Demos; E. Dohmen; J. C. Driggers; S. E. Dwyer; A. Ejlli; T. Etzel; M. Evans; J. Feicht; R. Frey; W. Frischhertz; P. Fritschel; V. V. Frolov; P. Fulda; M. Fyffe; D. Ganapathy; B. Gateley; J. A. Giaime; K. D. Giardina; R. Goetz; A. W. Goodwin-Jones; S. Gras; C. Gray; D. Griffith; H. Grote; T. Guidry; E. D. Hall; J. Hanks; J. Hanson; M. C. Heintze; N. A. Holland; D. Hoyland; H. Y. Huang; Y. Inoue; A. L. James; A. Jennings; W. Jia; S. Karat; S. Karki; M. Kasprzack; K. Kawabe; N. Kijbunchoo; P. J. King; J. S. Kissel; K. Komori; A. Kontos; R. Kumar; K. Kuns; M. Landry; B. Lantz; M. Laxen; K. Lee; M. Lesovsky; F. Llamas; M. Lormand; H. A. Loughlin; M. MacInnis; C. N. Makarem; G. L. Mansell; R. M. Martin; K. Mason; F. Matichard; N. Mavalvala; N. Maxwell; G. McCarrol; R. McCarthy; D. E. McClelland; S. McCormick; L. McCuller; T. McRae; F. Mera; E. L. Merilh; F. Meylahn; R. Mittleman; D. Moraru; G. Moreno; A. Mullavey; M. Nakano; T. J.N. Nelson; J. Notte; J. Oberling; T. O’Hanlon; C. Osthelder; D. J. Ottaway; H. Overmier; W. Parker; A. Pele; H. Pham; M. Pirello; V. Quetschke; K. E. Ramirez; J. Reyes; J. W. Richardson; M. Robinson; J. G. Rollins; C. L. Romel; J. H. Romie; M. P. Ross; K. Ryan; T. Sadecki; A. Sanchez; E. J. Sanchez; L. E. Sanchez; R. L. Savage; D. Schaetzl; M. G. Schiworski; R. Schnabel; E. Schwartz; D. Sellers; T. Shaffer; R. W. Short; D. Sigg; B. J.J. Slagmolen; C. Soike; V. Srivastava; L. Sun; D. B. Tanner; M. Thomas; P. Thomas; K. A. Thorne; C. I. Torrie; G. Traylor; A. S. Ubhi; G. Vajente; J. Vanosky; A. Vecchio; P. J. Veitch; A. M. Vibhute; E. R.G. von Reis; J. Warner; B. Weaver; R. Weiss; C. Whittle; B. Willke; C. C. Wipf; V. A. Xu; H. Yamamoto; L. Zhang; M. E. Zucker

doi:10.1088/1361-6382/adc4b6

LIGO Detector Characterization in the first half of the fourth Observing run

S. Soni
, B. K. Berger
, D. Davis
, F. Di Renzo
, A. Effler
, T. A. Ferreira
, J. Glanzer
, E. Goetz
, G. González
, A. Helmling-Cornell
, B. Hughey
, R. Huxford
, B. Mannix
, G. Mo
, D. Nandi
, A. Neunzert
, S. Nichols
, K. Pham
, A. I. Renzini
, R. M.S. Schofield

A. Stuver, M. Trevor, S. Álvarez-López, R. Beda, C. P.L. Berry, S. Bhuiyan, L. Blagg, R. Bruntz, S. Callos, M. Chan, P. Charlton, N. Christensen, G. Connolly, R. Dhatri, J. Ding, V. Garg, K. Holley-Bockelmann, S. Hourihane, K. Jani, K. Janssens, S. Jarov, A. M. Knee, A. Lattal, Y. Lecoeuche, T. Littenberg, A. Liyanage, B. Lott, R. Macas, D. Malakar, K. McGowan, J. McIver, M. Millhouse, L. Nuttall, D. Nykamp, I. Ota, C. Rawcliffe, B. Scully, J. Tasson, A. Tejera, S. Thiele, R. Udall, C. Winborn, Z. Yarbrough, Z. Zhang, Y. Zheng, R. Abbott, I. Abouelfettouh, R. X. Adhikari, A. Ananyeva, S. Appert, K. Arai, N. Aritomi, S. M. Aston, M. Ball, S. W. Ballmer, D. Barker, L. Barsotti, J. Betzwieser, G. Billingsley, S. Biscans, N. Bode, E. Bonilla, V. Bossilkov, A. Branch, A. F. Brooks, D. D. Brown, J. Bryant, C. Cahillane, H. Cao, E. Capote, F. Clara, J. Collins, C. M. Compton, R. Cottingham, D. C. Coyne, R. Crouch, J. Csizmazia, T. J. Cullen, L. P. Dartez, N. Demos, E. Dohmen, J. C. Driggers, S. E. Dwyer, A. Ejlli, T. Etzel, M. Evans, J. Feicht, R. Frey, W. Frischhertz, P. Fritschel, V. V. Frolov, P. Fulda, M. Fyffe, D. Ganapathy, B. Gateley, J. A. Giaime, K. D. Giardina, R. Goetz, A. W. Goodwin-Jones, S. Gras, C. Gray, D. Griffith, H. Grote, T. Guidry, E. D. Hall, J. Hanks, J. Hanson, M. C. Heintze, N. A. Holland, D. Hoyland, H. Y. Huang, Y. Inoue, A. L. James, A. Jennings, W. Jia, S. Karat, S. Karki, M. Kasprzack, K. Kawabe, N. Kijbunchoo, P. J. King, J. S. Kissel, K. Komori, A. Kontos, R. Kumar, K. Kuns, M. Landry, B. Lantz, M. Laxen, K. Lee, M. Lesovsky, F. Llamas, M. Lormand, H. A. Loughlin, M. MacInnis, C. N. Makarem, G. L. Mansell, R. M. Martin, K. Mason, F. Matichard, N. Mavalvala, N. Maxwell, G. McCarrol, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, T. McRae, F. Mera, E. L. Merilh, F. Meylahn, R. Mittleman, D. Moraru, G. Moreno, A. Mullavey, M. Nakano, T. J.N. Nelson, J. Notte, J. Oberling, T. O’Hanlon, C. Osthelder, D. J. Ottaway, H. Overmier, W. Parker, A. Pele, H. Pham, M. Pirello, V. Quetschke, K. E. Ramirez, J. Reyes, J. W. Richardson, M. Robinson, J. G. Rollins, C. L. Romel, J. H. Romie, M. P. Ross, K. Ryan, T. Sadecki, A. Sanchez, E. J. Sanchez, L. E. Sanchez, R. L. Savage, D. Schaetzl, M. G. Schiworski, R. Schnabel, E. Schwartz, D. Sellers, T. Shaffer, R. W. Short, D. Sigg, B. J.J. Slagmolen, C. Soike, V. Srivastava, L. Sun, D. B. Tanner, M. Thomas, P. Thomas, K. A. Thorne, C. I. Torrie, G. Traylor, A. S. Ubhi, G. Vajente, J. Vanosky, A. Vecchio, P. J. Veitch, A. M. Vibhute, E. R.G. von Reis, J. Warner, B. Weaver, R. Weiss, C. Whittle, B. Willke, C. C. Wipf, V. A. Xu, H. Yamamoto, L. Zhang, M. E. Zucker

Department of Physics

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Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.

Original language	English
Article number	085016
Journal	Classical and Quantum Gravity
Volume	42
Issue number	8
DOIs	https://doi.org/10.1088/1361-6382/adc4b6
State	Published - 18 Apr 2025

Keywords

LIGO
detector characterization
gravitational wave detectors
noise reduction

Access to Document

10.1088/1361-6382/adc4b6

Cite this

Soni, S., Berger, B. K., Davis, D., Di Renzo, F., Effler, A., Ferreira, T. A., Glanzer, J., Goetz, E., González, G., Helmling-Cornell, A., Hughey, B., Huxford, R., Mannix, B., Mo, G., Nandi, D., Neunzert, A., Nichols, S., Pham, K., Renzini, A. I., ... Zucker, M. E. (2025). LIGO Detector Characterization in the first half of the fourth Observing run. Classical and Quantum Gravity, 42(8), Article 085016. https://doi.org/10.1088/1361-6382/adc4b6

@article{28c34293271c4e929f7528b527e9d621,

title = "LIGO Detector Characterization in the first half of the fourth Observing run",

abstract = "Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.",

keywords = "LIGO, detector characterization, gravitational wave detectors, noise reduction",

author = "S. Soni and Berger, \{B. K.\} and D. Davis and \{Di Renzo\}, F. and A. Effler and Ferreira, \{T. A.\} and J. Glanzer and E. Goetz and G. Gonz{\'a}lez and A. Helmling-Cornell and B. Hughey and R. Huxford and B. Mannix and G. Mo and D. Nandi and A. Neunzert and S. Nichols and K. Pham and Renzini, \{A. I.\} and Schofield, \{R. M.S.\} and A. Stuver and M. Trevor and S. {\'A}lvarez-L{\'o}pez and R. Beda and Berry, \{C. P.L.\} and S. Bhuiyan and L. Blagg and R. Bruntz and S. Callos and M. Chan and P. Charlton and N. Christensen and G. Connolly and R. Dhatri and J. Ding and V. Garg and K. Holley-Bockelmann and S. Hourihane and K. Jani and K. Janssens and S. Jarov and Knee, \{A. M.\} and A. Lattal and Y. Lecoeuche and T. Littenberg and A. Liyanage and B. Lott and R. Macas and D. Malakar and K. McGowan and J. McIver and M. Millhouse and L. Nuttall and D. Nykamp and I. Ota and C. Rawcliffe and B. Scully and J. Tasson and A. Tejera and S. Thiele and R. Udall and C. Winborn and Z. Yarbrough and Z. Zhang and Y. Zheng and R. Abbott and I. Abouelfettouh and Adhikari, \{R. X.\} and A. Ananyeva and S. Appert and K. Arai and N. Aritomi and Aston, \{S. M.\} and M. Ball and Ballmer, \{S. W.\} and D. Barker and L. Barsotti and J. Betzwieser and G. Billingsley and S. Biscans and N. Bode and E. Bonilla and V. Bossilkov and A. Branch and Brooks, \{A. F.\} and Brown, \{D. D.\} and J. Bryant and C. Cahillane and H. Cao and E. Capote and F. Clara and J. Collins and Compton, \{C. M.\} and R. Cottingham and Coyne, \{D. C.\} and R. Crouch and J. Csizmazia and Cullen, \{T. J.\} and Dartez, \{L. P.\} and N. Demos and E. Dohmen and Driggers, \{J. C.\} and Dwyer, \{S. E.\} and A. Ejlli and T. Etzel and M. Evans and J. Feicht and R. Frey and W. Frischhertz and P. Fritschel and Frolov, \{V. V.\} and P. Fulda and M. Fyffe and D. Ganapathy and B. Gateley and Giaime, \{J. A.\} and Giardina, \{K. D.\} and R. Goetz and Goodwin-Jones, \{A. W.\} and S. Gras and C. Gray and D. Griffith and H. Grote and T. Guidry and Hall, \{E. D.\} and J. Hanks and J. Hanson and Heintze, \{M. C.\} and Holland, \{N. A.\} and D. Hoyland and Huang, \{H. Y.\} and Y. Inoue and James, \{A. L.\} and A. Jennings and W. Jia and S. Karat and S. Karki and M. Kasprzack and K. Kawabe and N. Kijbunchoo and King, \{P. J.\} and Kissel, \{J. S.\} and K. Komori and A. Kontos and R. Kumar and K. Kuns and M. Landry and B. Lantz and M. Laxen and K. Lee and M. Lesovsky and F. Llamas and M. Lormand and Loughlin, \{H. A.\} and M. MacInnis and Makarem, \{C. N.\} and Mansell, \{G. L.\} and Martin, \{R. M.\} and K. Mason and F. Matichard and N. Mavalvala and N. Maxwell and G. McCarrol and R. McCarthy and McClelland, \{D. E.\} and S. McCormick and L. McCuller and T. McRae and F. Mera and Merilh, \{E. L.\} and F. Meylahn and R. Mittleman and D. Moraru and G. Moreno and A. Mullavey and M. Nakano and Nelson, \{T. J.N.\} and J. Notte and J. Oberling and T. O{\textquoteright}Hanlon and C. Osthelder and Ottaway, \{D. J.\} and H. Overmier and W. Parker and A. Pele and H. Pham and M. Pirello and V. Quetschke and Ramirez, \{K. E.\} and J. Reyes and Richardson, \{J. W.\} and M. Robinson and Rollins, \{J. G.\} and Romel, \{C. L.\} and Romie, \{J. H.\} and Ross, \{M. P.\} and K. Ryan and T. Sadecki and A. Sanchez and Sanchez, \{E. J.\} and Sanchez, \{L. E.\} and Savage, \{R. L.\} and D. Schaetzl and Schiworski, \{M. G.\} and R. Schnabel and E. Schwartz and D. Sellers and T. Shaffer and Short, \{R. W.\} and D. Sigg and Slagmolen, \{B. J.J.\} and C. Soike and V. Srivastava and L. Sun and Tanner, \{D. B.\} and M. Thomas and P. Thomas and Thorne, \{K. A.\} and Torrie, \{C. I.\} and G. Traylor and Ubhi, \{A. S.\} and G. Vajente and J. Vanosky and A. Vecchio and Veitch, \{P. J.\} and Vibhute, \{A. M.\} and \{von Reis\}, \{E. R.G.\} and J. Warner and B. Weaver and R. Weiss and C. Whittle and B. Willke and Wipf, \{C. C.\} and Xu, \{V. A.\} and H. Yamamoto and L. Zhang and Zucker, \{M. E.\}",

note = "Publisher Copyright: {\textcopyright} 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.",

year = "2025",

month = apr,

day = "18",

doi = "10.1088/1361-6382/adc4b6",

language = "English",

volume = "42",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "8",

}

Soni, S, Berger, BK, Davis, D, Di Renzo, F, Effler, A, Ferreira, TA, Glanzer, J, Goetz, E, González, G, Helmling-Cornell, A, Hughey, B, Huxford, R, Mannix, B, Mo, G, Nandi, D, Neunzert, A, Nichols, S, Pham, K, Renzini, AI, Schofield, RMS, Stuver, A, Trevor, M, Álvarez-López, S, Beda, R, Berry, CPL, Bhuiyan, S, Blagg, L, Bruntz, R, Callos, S, Chan, M, Charlton, P, Christensen, N, Connolly, G, Dhatri, R, Ding, J, Garg, V, Holley-Bockelmann, K, Hourihane, S, Jani, K, Janssens, K, Jarov, S, Knee, AM, Lattal, A, Lecoeuche, Y, Littenberg, T, Liyanage, A, Lott, B, Macas, R, Malakar, D, McGowan, K, McIver, J, Millhouse, M, Nuttall, L, Nykamp, D, Ota, I, Rawcliffe, C, Scully, B, Tasson, J, Tejera, A, Thiele, S, Udall, R, Winborn, C, Yarbrough, Z, Zhang, Z, Zheng, Y, Abbott, R, Abouelfettouh, I, Adhikari, RX, Ananyeva, A, Appert, S, Arai, K, Aritomi, N, Aston, SM, Ball, M, Ballmer, SW, Barker, D, Barsotti, L, Betzwieser, J, Billingsley, G, Biscans, S, Bode, N, Bonilla, E, Bossilkov, V, Branch, A, Brooks, AF, Brown, DD, Bryant, J, Cahillane, C, Cao, H, Capote, E, Clara, F, Collins, J, Compton, CM, Cottingham, R, Coyne, DC, Crouch, R, Csizmazia, J, Cullen, TJ, Dartez, LP, Demos, N, Dohmen, E, Driggers, JC, Dwyer, SE, Ejlli, A, Etzel, T, Evans, M, Feicht, J, Frey, R, Frischhertz, W, Fritschel, P, Frolov, VV, Fulda, P, Fyffe, M, Ganapathy, D, Gateley, B, Giaime, JA, Giardina, KD, Goetz, R, Goodwin-Jones, AW, Gras, S, Gray, C, Griffith, D, Grote, H, Guidry, T, Hall, ED, Hanks, J, Hanson, J, Heintze, MC, Holland, NA, Hoyland, D, Huang, HY, Inoue, Y, James, AL, Jennings, A, Jia, W, Karat, S, Karki, S, Kasprzack, M, Kawabe, K, Kijbunchoo, N, King, PJ, Kissel, JS, Komori, K, Kontos, A, Kumar, R, Kuns, K, Landry, M, Lantz, B, Laxen, M, Lee, K, Lesovsky, M, Llamas, F, Lormand, M, Loughlin, HA, MacInnis, M, Makarem, CN, Mansell, GL, Martin, RM, Mason, K, Matichard, F, Mavalvala, N, Maxwell, N, McCarrol, G, McCarthy, R, McClelland, DE, McCormick, S, McCuller, L, McRae, T, Mera, F, Merilh, EL, Meylahn, F, Mittleman, R, Moraru, D, Moreno, G, Mullavey, A, Nakano, M, Nelson, TJN, Notte, J, Oberling, J, O’Hanlon, T, Osthelder, C, Ottaway, DJ, Overmier, H, Parker, W, Pele, A, Pham, H, Pirello, M, Quetschke, V, Ramirez, KE, Reyes, J, Richardson, JW, Robinson, M, Rollins, JG, Romel, CL, Romie, JH, Ross, MP, Ryan, K, Sadecki, T, Sanchez, A, Sanchez, EJ, Sanchez, LE, Savage, RL, Schaetzl, D, Schiworski, MG, Schnabel, R, Schwartz, E, Sellers, D, Shaffer, T, Short, RW, Sigg, D, Slagmolen, BJJ, Soike, C, Srivastava, V, Sun, L, Tanner, DB, Thomas, M, Thomas, P, Thorne, KA, Torrie, CI, Traylor, G, Ubhi, AS, Vajente, G, Vanosky, J, Vecchio, A, Veitch, PJ, Vibhute, AM, von Reis, ERG, Warner, J, Weaver, B, Weiss, R, Whittle, C, Willke, B, Wipf, CC, Xu, VA, Yamamoto, H, Zhang, L & Zucker, ME 2025, 'LIGO Detector Characterization in the first half of the fourth Observing run', Classical and Quantum Gravity, vol. 42, no. 8, 085016. https://doi.org/10.1088/1361-6382/adc4b6

TY - JOUR

T1 - LIGO Detector Characterization in the first half of the fourth Observing run

AU - Soni, S.

AU - Berger, B. K.

AU - Davis, D.

AU - Di Renzo, F.

AU - Effler, A.

AU - Ferreira, T. A.

AU - Glanzer, J.

AU - Goetz, E.

AU - González, G.

AU - Helmling-Cornell, A.

AU - Hughey, B.

AU - Huxford, R.

AU - Mannix, B.

AU - Mo, G.

AU - Nandi, D.

AU - Neunzert, A.

AU - Nichols, S.

AU - Pham, K.

AU - Renzini, A. I.

AU - Schofield, R. M.S.

AU - Stuver, A.

AU - Trevor, M.

AU - Álvarez-López, S.

AU - Beda, R.

AU - Berry, C. P.L.

AU - Bhuiyan, S.

AU - Blagg, L.

AU - Bruntz, R.

AU - Callos, S.

AU - Chan, M.

AU - Charlton, P.

AU - Christensen, N.

AU - Connolly, G.

AU - Dhatri, R.

AU - Ding, J.

AU - Garg, V.

AU - Holley-Bockelmann, K.

AU - Hourihane, S.

AU - Jani, K.

AU - Janssens, K.

AU - Jarov, S.

AU - Knee, A. M.

AU - Lattal, A.

AU - Lecoeuche, Y.

AU - Littenberg, T.

AU - Liyanage, A.

AU - Lott, B.

AU - Macas, R.

AU - Malakar, D.

AU - McGowan, K.

AU - McIver, J.

AU - Millhouse, M.

AU - Nuttall, L.

AU - Nykamp, D.

AU - Ota, I.

AU - Rawcliffe, C.

AU - Scully, B.

AU - Tasson, J.

AU - Tejera, A.

AU - Thiele, S.

AU - Udall, R.

AU - Winborn, C.

AU - Yarbrough, Z.

AU - Zhang, Z.

AU - Zheng, Y.

AU - Abbott, R.

AU - Abouelfettouh, I.

AU - Adhikari, R. X.

AU - Ananyeva, A.

AU - Appert, S.

AU - Arai, K.

AU - Aritomi, N.

AU - Aston, S. M.

AU - Ball, M.

AU - Ballmer, S. W.

AU - Barker, D.

AU - Barsotti, L.

AU - Betzwieser, J.

AU - Billingsley, G.

AU - Biscans, S.

AU - Bode, N.

AU - Bonilla, E.

AU - Bossilkov, V.

AU - Branch, A.

AU - Brooks, A. F.

AU - Brown, D. D.

AU - Bryant, J.

AU - Cahillane, C.

AU - Cao, H.

AU - Capote, E.

AU - Clara, F.

AU - Collins, J.

AU - Compton, C. M.

AU - Cottingham, R.

AU - Coyne, D. C.

AU - Crouch, R.

AU - Csizmazia, J.

AU - Cullen, T. J.

AU - Dartez, L. P.

AU - Demos, N.

AU - Dohmen, E.

AU - Driggers, J. C.

AU - Dwyer, S. E.

AU - Ejlli, A.

AU - Etzel, T.

AU - Evans, M.

AU - Feicht, J.

AU - Frey, R.

AU - Frischhertz, W.

AU - Fritschel, P.

AU - Frolov, V. V.

AU - Fulda, P.

AU - Fyffe, M.

AU - Ganapathy, D.

AU - Gateley, B.

AU - Giaime, J. A.

AU - Giardina, K. D.

AU - Goetz, R.

AU - Goodwin-Jones, A. W.

AU - Gras, S.

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PY - 2025/4/18

Y1 - 2025/4/18

N2 - Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.

AB - Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.

KW - LIGO

KW - detector characterization

KW - gravitational wave detectors

KW - noise reduction

UR - https://www.scopus.com/pages/publications/105003185796

U2 - 10.1088/1361-6382/adc4b6

DO - 10.1088/1361-6382/adc4b6

M3 - Article

AN - SCOPUS:105003185796

SN - 0264-9381

VL - 42

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 8

M1 - 085016

ER -

LIGO Detector Characterization in the first half of the fourth Observing run

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