BibTex format
@article{Agazie:2025:1538-4357/ad93d5,
author = {Agazie, G and Anumarlapudi, A and Archibald, AM and Arzoumanian, Z and Baier, JG and Baker, PT and Bécsy, B and Blecha, L and Brazier, A and Brook, PR and Brown, L and Burke-Spolaor, S 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 Deng, H and Dolch, T 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 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 Larsen, B and Lazio, TJW and Lewandowska, N and Liu, T and Lorimer, DR and Luo, J and Lynch, RS and Ma, C-P 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 Natarajan, P and Ng, C and Nice, DJ and },
doi = {1538-4357/ad93d5},
journal = {The Astrophysical Journal},
pages = {31--31},
title = {The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background},
url = {http://dx.doi.org/10.3847/1538-4357/ad93d5},
volume = {978},
year = {2025}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - <jats:title>Abstract</jats:title> <jats:p> The cosmic merger history of supermassive black hole binaries (SMBHBs) is expected to produce a low-frequency gravitational wave background (GWB). Here we investigate how signs of the discrete nature of this GWB can manifest in pulsar timing arrays (PTAs) through excursions from, and breaks in, the expected <jats:inline-formula> <jats:tex-math> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mi>f</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>GW</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>2</mml:mn> <mml:mrow> <mml:mo stretchy="true">/</mml:mo> </mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msubsup> </mml:math> </jats:inline-formula> power law of the GWB strain spectrum. To do this, we create a semianalytic SMBHB population model, fit to North American Nanohertz Observatory for Gravitational Waves (NANOGrav’s) 15 yr GWB amplitude, and with 1000 realizations, we study the populations’ characteristic strain and residual spectra. Comparing our models to the NANOGrav 15 yr spectrum, we find two interesting excur
AU - Agazie,G
AU - Anumarlapudi,A
AU - Archibald,AM
AU - Arzoumanian,Z
AU - Baier,JG
AU - Baker,PT
AU - Bécsy,B
AU - Blecha,L
AU - Brazier,A
AU - Brook,PR
AU - Brown,L
AU - Burke-Spolaor,S
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 - Deng,H
AU - Dolch,T
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 - 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 - Larsen,B
AU - Lazio,TJW
AU - Lewandowska,N
AU - Liu,T
AU - Lorimer,DR
AU - Luo,J
AU - Lynch,RS
AU - Ma,C-P
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 - Natarajan,P
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 - Runnoe,JC
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 - Sosa,Fiscella SV
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 - Willson,L
AU - Witt,CA
AU - Wright,D
AU - Young,O
DO - 1538-4357/ad93d5
EP - 31
PY - 2025///
SN - 0004-637X
SP - 31
TI - The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background
T2 - The Astrophysical Journal
UR - http://dx.doi.org/10.3847/1538-4357/ad93d5
UR - https://doi.org/10.3847/1538-4357/ad93d5
VL - 978
ER -