2023MNRAS.521.5077F

Query : 2023MNRAS.521.5077F

2023MNRAS.521.5077F - Mon. Not. R. Astron. Soc., 521, 5077-5086 (2023/June-1)

Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array.

FALXA M., BABAK S., BAKER P.T., BECSY B., CHALUMEAU A., CHEN S., CHEN Z., CORNISH N.J., GUILLEMOT L., HAZBOUN J.S., MINGARELLI C.M.F., PARTHASARATHY A., PETITEAU A., POL N.S., SESANA A., SPOLAOR S.B., TAYLOR S.R., THEUREAU G., VALLISNERI M., VIGELAND S.J., WITT C.A., ZHU X., ANTONIADIS J., ARZOUMANIAN Z., BAILES M., BHAT N.D.R., BLECHA L., BRAZIER A., BROOK P.R., CABALLERO N., CAMERON A.D., CASEY-CLYDE J.A., CHAMPION D., CHARISI M., CHATTERJEE S., COGNARD I., CORDES J.M., CRAWFORD F., CROMARTIE H.T., CROWTER K., DAI S., DECESAR M.E., DEMOREST P.B., DESVIGNES G., DOLCH T., DRACHLER B., FENG Y., FERRARA E.C., FIORE W., FONSECA E., GARVER-DANIELS N., GLASER J., GONCHAROV B., GOOD D.C., GRIESSMEIER J., GUO Y.J., GULTEKIN K., HOBBS G., HU H., ISLO K., JANG J., JENNINGS R.J., JOHNSON A.D., JONES M.L., KACZMAREK J., KAISER A.R., KAPLAN D.L., KEITH M., KELLEY L.Z., KERR M., KEY J.S., LAAL N., LAM M.T., LAMB W.G., LAZIO T.J.W., LIU K., LIU T., LUO J., LYNCH R.S., MADISON D.R., MAIN R., MANCHESTER R., McEWEN A., McKEE J., McLAUGHLIN M.A., NG C., NICE D.J., OCKER S., OLUM K.D., OSLOWSKI S., PENNUCCI T.T., PERERA B.B.P., PERRODIN D., PORAYKO N., POSSENTI A., QUELQUEJAY-LECLERE H., RANSOM S.M., RAY P.S., REARDON D.J., RUSSELL C.J., SAMAJDAR A., SARKISSIAN J., SCHULT L., SHAIFULLAH G., SHANNON R.M., SHAPIRO-ALBERT B.J., SIEMENS X., SIMON J.J., SIWEK M., SMITH T.L., SPERI L., SPIEWAK R., STAIRS I.H., STAPPERS B., STINEBRING D.R., SWIGGUM J.K., TIBURZI C., TURNER J., VECCHIO A., VERBIEST J.P.W., WAHL H., WANG S.Q., WANG J., WANG J., WU Z., ZHANG L., ZHANG S. (The IPTA Collaboration)

Abstract (from CDS):

The International Pulsar Timing Array 2nd data release is the combination of data sets from worldwide collaborations. In this study, we search for continuous waves: gravitational wave signals produced by individual supermassive black hole binaries in the local universe. We consider binaries on circular orbits and neglect the evolution of orbital frequency over the observational span. We find no evidence for such signals and set sky averaged 95 per cent upper limits on their amplitude h95. The most sensitive frequency is 10 nHz with h95 = 9.1 × 10–15. We achieved the best upper limit to date at low and high frequencies of the PTA band thanks to improved effective cadence of observations. In our analysis, we have taken into account the recently discovered common red noise process, which has an impact at low frequencies. We also find that the peculiar noise features present in some pulsars data must be taken into account to reduce the false alarm. We show that using custom noise models is essential in searching for continuous gravitational wave signals and setting the upper limit.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): gravitational waves - methods: data analysis - pulsars: general

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J0437-47 Psr 04 37 15.7994581776 -47 15 08.544351636           DC 1032 0
2 PSR B0613-02.0 Psr 06 13 43.977070 -02 00 47.34294           ~ 319 1
3 PSR J1012+5307 Psr 10 12 33.4345449600 +53 07 02.548542576     19.5     DA 419 1
4 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1
5 PSR J1744-1134 Psr 17 44 29.4220844 -11 34 54.801320           ~ 323 1
6 PSR J1909-3744 Psr 19 09 47.42820 -37 44 14.7740           ~ 343 2

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