BibTex format
@article{Agazie:2023:2041-8213/ace18a,
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 Case, R and Casey-Clyde, JA 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 Digman, MC 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 Gültekin, K and Hazboun, JS and Hourihane, S 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 Meyers, PM and Mingarelli, CMF and Mitridate, A and Ng, C and Nice, DJ and Ocker, SK },
doi = {2041-8213/ace18a},
journal = {Astrophysical Journal Letters},
title = {The NANOGrav 15 yr Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries},
url = {http://dx.doi.org/10.3847/2041-8213/ace18a},
volume = {951},
year = {2023}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Evidence for a low-frequency stochastic gravitational-wave background has recently been reported based on analyses of pulsar timing array data. The most likely source of such a background is a population of supermassive black hole binaries, the loudest of which may be individually detected in these data sets. Here we present the search for individual supermassive black hole binaries in the NANOGrav 15 yr data set. We introduce several new techniques, which enhance the efficiency and modeling accuracy of the analysis. The search uncovered weak evidence for two candidate signals, one with a gravitational-wave frequency of ∼4 nHz, and another at ∼170 nHz. The significance of the low-frequency candidate was greatly diminished when Hellings-Downs correlations were included in the background model. The high-frequency candidate was discounted due to the lack of a plausible host galaxy, the unlikely astrophysical prior odds of finding such a source, and since most of its support comes from a single pulsar with a commensurate binary period. Finding no compelling evidence for signals from individual binary systems, we place upper limits on the strain amplitude of gravitational waves emitted by such systems. At our most sensitive frequency of 6 nHz, we place a sky-averaged 95% upper limit of 8 × 10<sup>−15</sup> on the strain amplitude. We also calculate an exclusion volume and a corresponding effective radius, within which we can rule out the presence of black hole binaries emitting at a given frequency.
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 - Case,R
AU - Casey-Clyde,JA
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 - Digman,MC
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 - Gültekin,K
AU - Hazboun,JS
AU - Hourihane,S
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 - Meyers,PM
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 - Petrov,P
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,J
AU - Taylor,SR
AU - Turner,JE
AU - Unal,C
AU - Vallisneri,M
AU - van,Haasteren R
AU - Vigeland,SJ
AU - Wahl,HM
AU - Witt,CA
AU - Young,O
DO - 2041-8213/ace18a
PY - 2023///
SN - 2041-8205
TI - The NANOGrav 15 yr Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
T2 - Astrophysical Journal Letters
UR - http://dx.doi.org/10.3847/2041-8213/ace18a
VL - 951
ER -