The NANOGrav 12.5 yr Data Set: Search for Gravitational Wave Memory

被引：18

作者：

Agazie, Gabriella ^{[1
]}

Arzoumanian, Zaven ^{[2
]}

Baker, Paul T. ^{[3
]}

Becsy, Bence ^{[4
]}

Blecha, Laura ^{[5
]}

Blumer, Harsha ^{[6
,7
]}

Brazier, Adam ^{[8
,9
,10
]}

Brook, Paul R. ^{[11
,12
]}

Burke-Spolaor, Sarah ^{[6
,7
]}

Burnette, Rand ^{[4
]}

Case, Robin ^{[4
]}

Casey-Clyde, J. Andrew ^{[13
]}

Charisi, Maria ^{[14
]}

Chatterjee, Shami ^{[8
,9
]}

Cohen, Tyler ^{[15
]}

Cordes, James M. ^{[8
,9
]}

Cornish, Neil J. ^{[16
]}

Crawford, Fronefield ^{[17
]}

Cromartie, H. Thankful ^{[8
,9
]}

Decesar, Megan E. ^{[18
]}

Degan, Dallas ^{[4
]}

Demorest, Paul B. ^{[19
]}

Dolch, Timothy ^{[20
,21
]}

Drachler, Brendan ^{[22
,23
]}

Ellis, Justin A. ^{[24
,61
]}

Ferdman, Robert D. ^{[24
]}

Ferrara, Elizabeth C. ^{[25
,26
,27
]}

Fiore, William ^{[6
,7
]}

Fonseca, Emmanuel ^{[6
,7
]}

Freedman, Gabriel E. ^{[1
]}

Garver-Daniels, Nate ^{[6
,7
]}

Gentile, Peter A. ^{[6
,7
]}

Glaser, Joseph ^{[6
,7
]}

Good, Deborah C. ^{[13
,28
]}

Gultekin, Kayhan ^{[29
]}

Hazboun, Jeffrey S. ^{[4
]}

Jennings, Ross J. ^{[6
,7
]}

Johnson, Aaron D. ^{[1
,30
]}

Jones, Megan L. ^{[1
]}

Kaiser, Andrew R. ^{[6
,7
]}

Kaplan, David L. ^{[1
]}

Kelley, Luke Zoltan ^{[31
]}

Key, Joey S. ^{[32
]}

Laal, Nima ^{[4
]}

Lam, Michael T. ^{[22
,23
,33
]}

Lamb, William G. ^{[14
]}

Lazio, T. Joseph W. ^{[34
]}

Lewandowska, Natalia ^{[35
]}

Liu, Tingting ^{[6
,7
]}

Lorimer, Duncan R. ^{[6
,7
]}

机构：

[1] Univ Wisconsin Milwaukee, Ctr Gravitat Cosmol & Astrophys, Dept Phys, POB 413, Milwaukee, WI 53201 USA

[2] NASA, Xray Astrophys Lab, Goddard Space Flight Ctr, Code 662, Greenbelt, MD 20771 USA

[3] Widener Univ, Dept Phys & Astron, One Univ Pl, Chester, PA 19013 USA

[4] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA

[5] Univ Florida, Phys Dept, Gainesville, FL 32611 USA

[6] West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA

[7] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

[8] Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY 14853 USA

[9] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[10] Cornell Univ, Cornell Ctr Adv Comp, Ithaca, NY 14853 USA

[11] Univ Birmingham, Inst Gravitat Wave Astron, Birmingham B15 2TT, W Midlands, England

[12] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[13] Univ Connecticut, Dept Phys, 196 Auditorium Rd,U-3046, Storrs, CT 06269 USA

[14] Vanderbilt Univ, Dept Phys & Astron, 2301 Vanderbilt Pl, Nashville, TN 37235 USA

[15] New Mexico Inst Min & Technol, Dept Phys, 801 Leroy Pl, Socorro, NM 87801 USA

[16] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[17] Franklin & Marshall Coll, Dept Phys & Astron, POB 3003, Lancaster, PA 17604 USA

[18] George Mason Univ, Washington, DC 20375 USA

[19] Natl Radio Astron Observ, 1003 Lopezville Rd, Socorro, NM 87801 USA

[20] Hillsdale Coll, Dept Phys, 33 E Coll St, Hillsdale, MI USA

[21] Eureka Sci, 2452 Delmer St,Suite 100, Oakland, CA 94602 USA

[22] Rochester Inst Technol, Sch Phys & Astron, Rochester, NY 14623 USA

[23] Rochester Inst Technol, Lab Multiwavelength Astrophys, Rochester, NY 14623 USA

[24] Univ East Anglia, Sch Chem, Norwich NR4 7TJ, Norfolk, England

[25] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[26] NASA, Ctr Res & Explorat Space Sci & Technol, GSFC, Greenbelt, MD 20771 USA

[27] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[28] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

[29] Univ Michigan, Dept Astron & Astrophys, Ann Arbor, MI 48109 USA

[30] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

[31] Univ Calif Berkeley, Dept Astron, 501 Campbell Hall 3411, Berkeley, CA 94720 USA

[32] Univ Washington Bothell, 18115 Campus Way NE, Bothell, WA 98011 USA

[33] SETI Inst, 339 N Bernardo Ave,Suite 200, Mountain View, CA 94043 USA

[34] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[35] SUNY Coll Oswego, Dept Phys, Oswego, NY 13126 USA

[36] Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[37] Green Bank Observ, POB 2, Green Bank, WV 24944 USA

[38] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[39] Univ Pacific, Dept Phys, 3601 Pacific Ave, Stockton, CA 95211 USA

[40] Univ Hull, EA Milne Ctr Astrophys, Cottingham Rd, Kingston Upon Hull HU6 7RX, Yorks, England

[41] Univ Hull, Ctr Excellence Data Sci Artificial Intelligence &, Cottingham Rd, Kingston Upon Hull HU6 7RX, Yorks, England

[42] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[43] Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany

[44] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[45] Lafayette Coll, Dept Phys, Easton, PA 18042 USA

[46] Tufts Univ, Inst Cosmol, Dept Phys & Astron, Medford, MA 02155 USA

[47] Eotvos Lorand Univ, Inst Phys & Astron, Pzmany Ps 1-A, H-1117 Budapest, Hungary

[48] Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA

[49] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA

[50] Texas Tech Univ, Dept Phys, Box 41051, Lubbock, TX 79409 USA

来源：

ASTROPHYSICAL JOURNAL | 2024年 / 963卷 / 01期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会; 美国国家航空航天局; 英国科学技术设施理事会;

关键词：

2ND DATA RELEASE; BURSTS; ARRAY; LIMITS; NOISE; CONSTRAINTS; SENSITIVITY; DISPERSION; BINARY;

D O I：

10.3847/1538-4357/ad0726

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a Bayesian search for gravitational wave (GW) memory in the NANOGrav 12.5 yr data set. We find no convincing evidence for any gravitational wave memory signals in this data set. We find a Bayes factor of 2.8 in favor of a model that includes a memory signal and common spatially uncorrelated red noise (CURN) compared to a model including only a CURN. However, further investigation shows that a disproportionate amount of support for the memory signal comes from three dubious pulsars. Using a more flexible red-noise model in these pulsars reduces the Bayes factor to 1.3. Having found no compelling evidence, we go on to place upper limits on the strain amplitude of GW memory events as a function of sky location and event epoch. These upper limits are computed using a signal model that assumes the existence of a common, spatially uncorrelated red noise in addition to a GW memory signal. The median strain upper limit as a function of sky position is approximately 3.3 x 10-14. We also find that there are some differences in the upper limits as a function of sky position centered around PSR J0613-0200. This suggests that this pulsar has some excess noise that can be confounded with GW memory. Finally, the upper limits as a function of burst epoch continue to improve at later epochs. This improvement is attributable to the continued growth of the pulsar timing array.

引用

页数：12

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