BibTex format
@article{Agazie:2023:2041-8213/acda88,
author = {Agazie, G and Anumarlapudi, A and Archibald, AM and Arzoumanian, Z and Baker, PT and Bécsy, B and Blecha, L and Brazier, A and Brook, PR and Burke-Spolaor, S and Charisi, M and Chatterjee, S and Cohen, T and Cordes, JM and Cornish, NJ and Crawford, F and Cromartie, HT and Crowter, K and DeCesar, ME and Demorest, PB and Dolch, T and Drachler, B and Ferrara, EC and Fiore, W and Fonseca, E and Freedman, GE and Garver-Daniels, N and Gentile, PA and Glaser, J and Good, DC and Guertin, L and Gültekin, K and Hazboun, JS and Jennings, RJ and Johnson, AD and Jones, ML and Kaiser, AR and Kaplan, DL and Kelley, LZ and Kerr, M and Key, JS and Laal, N and Lam, MT and Lamb, WG and W, Lazio TJ and Lewandowska, N and Liu, T and Lorimer, DR and Luo, J and Lynch, RS and Ma, CP and Madison, DR and McEwen, A and McKee, JW and McLaughlin, MA and McMann, N and Meyers, BW and Mingarelli, CMF and Mitridate, A and Ng, C and Nice, DJ and Ocker, SK and Olum, KD and Pennucci, TT and Perera, BBP and Pol, NS and Ra},
doi = {2041-8213/acda88},
journal = {Astrophysical Journal Letters},
title = {The NANOGrav 15 yr Data Set: Detector Characterization and Noise Budget},
url = {http://dx.doi.org/10.3847/2041-8213/acda88},
volume = {951},
year = {2023}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Pulsar timing arrays (PTAs) are galactic-scale gravitational wave (GW) detectors. Each individual arm, composed of a millisecond pulsar, a radio telescope, and a kiloparsecs-long path, differs in its properties but, in aggregate, can be used to extract low-frequency GW signals. We present a noise and sensitivity analysis to accompany the NANOGrav 15 yr data release and associated papers, along with an in-depth introduction to PTA noise models. As a first step in our analysis, we characterize each individual pulsar data set with three types of white-noise parameters and two red-noise parameters. These parameters, along with the timing model and, particularly, a piecewise-constant model for the time-variable dispersion measure, determine the sensitivity curve over the low-frequency GW band we are searching. We tabulate information for all of the pulsars in this data release and present some representative sensitivity curves. We then combine the individual pulsar sensitivities using a signal-to-noise ratio statistic to calculate the global sensitivity of the PTA to a stochastic background of GWs, obtaining a minimum noise characteristic strain of 7 × 10<sup>−15</sup> at 5 nHz. A power-law-integrated analysis shows rough agreement with the amplitudes recovered in NANOGrav’s 15 yr GW background analysis. While our phenomenological noise model does not model all known physical effects explicitly, it provides an accurate characterization of the noise in the data while preserving sensitivity to multiple classes of GW signals.
AU - Agazie,G
AU - Anumarlapudi,A
AU - Archibald,AM
AU - Arzoumanian,Z
AU - Baker,PT
AU - Bécsy,B
AU - Blecha,L
AU - Brazier,A
AU - Brook,PR
AU - Burke-Spolaor,S
AU - Charisi,M
AU - Chatterjee,S
AU - Cohen,T
AU - Cordes,JM
AU - Cornish,NJ
AU - Crawford,F
AU - Cromartie,HT
AU - Crowter,K
AU - DeCesar,ME
AU - Demorest,PB
AU - Dolch,T
AU - Drachler,B
AU - Ferrara,EC
AU - Fiore,W
AU - Fonseca,E
AU - Freedman,GE
AU - Garver-Daniels,N
AU - Gentile,PA
AU - Glaser,J
AU - Good,DC
AU - Guertin,L
AU - Gültekin,K
AU - Hazboun,JS
AU - Jennings,RJ
AU - Johnson,AD
AU - Jones,ML
AU - Kaiser,AR
AU - Kaplan,DL
AU - Kelley,LZ
AU - Kerr,M
AU - Key,JS
AU - Laal,N
AU - Lam,MT
AU - Lamb,WG
AU - W,Lazio TJ
AU - Lewandowska,N
AU - Liu,T
AU - Lorimer,DR
AU - Luo,J
AU - Lynch,RS
AU - Ma,CP
AU - Madison,DR
AU - McEwen,A
AU - McKee,JW
AU - McLaughlin,MA
AU - McMann,N
AU - Meyers,BW
AU - Mingarelli,CMF
AU - Mitridate,A
AU - Ng,C
AU - Nice,DJ
AU - Ocker,SK
AU - Olum,KD
AU - Pennucci,TT
AU - Perera,BBP
AU - Pol,NS
AU - Radovan,HA
AU - Ransom,SM
AU - Ray,PS
AU - Romano,JD
AU - Sardesai,SC
AU - Schmiedekamp,A
AU - Schmiedekamp,C
AU - Schmitz,K
AU - Shapiro-Albert,BJ
AU - Siemens,X
AU - Simon,J
AU - Siwek,MS
AU - Stairs,IH
AU - Stinebring,DR
AU - Stovall,K
AU - Susobhanan,A
AU - Swiggum,JK
AU - Taylor,SR
AU - Turner,JE
AU - Unal,C
AU - Vallisneri,M
AU - Vigeland,SJ
AU - Wahl,HM
AU - Witt,CA
AU - Young,O
DO - 2041-8213/acda88
PY - 2023///
SN - 2041-8205
TI - The NANOGrav 15 yr Data Set: Detector Characterization and Noise Budget
T2 - Astrophysical Journal Letters
UR - http://dx.doi.org/10.3847/2041-8213/acda88
VL - 951
ER -