PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion

Spiewak R, Bailes M, Barr ED, Bhat NDR, Burgay M, Cameron AD, Champion DJ, Flynn CML, Jameson A, Johnston S, Keith MJ, et al. (2018)
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475(1): 469-477.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We present the discovery of a binary millisecond pulsar (MSP), PSR J2322-2650, found in the southern section of the High Time Resolution Universe survey. This system contains a 3.5-ms pulsar with a similar to 10(-3)M(circle dot) companion in a 7.75-h circular orbit. Follow-up observations at the Parkes and Lovell telescopes have led to precise measurements of the astrometric and spin parameters, including the period derivative, timing parallax, and proper motion. PSR J2322-2650 has a parallax of 4.4 +/- 1.2 mas, and is thus at an inferred distance of 230(-50)(+90) pc, making this system a candidate for optical studies. We have detected a source of R approximate to 26.4 mag at the radio position in a single R-band observation with the Keck telescope, and this is consistent with the blackbody temperature we would expect from the companion if it fills its Roche lobe. The intrinsic period derivative of PSR J2322-2650 is among the lowest known, 4.4(4) x 10(-22) ss(-1), implying a low surface magnetic field strength, 4.0(4) x 10(7) G. Its mean radio flux density of 160 mu Jy combined with the distance implies that its radio luminosity is the lowest ever measured, 0.008(5)mJy kpc(2). The inferred population of these systems in the Galaxy may be very significant, suggesting that this is a common MSP evolutionary path.
Stichworte
pulsars: general; pulsars: individual: PSR J2322-2650
Erscheinungsjahr
2018
Zeitschriftentitel
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Band
475
Ausgabe
1
Seite(n)
469-477
ISSN
0035-8711
eISSN
1365-2966
Page URI
https://pub.uni-bielefeld.de/record/2919315

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Spiewak R, Bailes M, Barr ED, et al. PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2018;475(1):469-477.
Spiewak, R., Bailes, M., Barr, E. D., Bhat, N. D. R., Burgay, M., Cameron, A. D., Champion, D. J., et al. (2018). PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 475(1), 469-477. doi:10.1093/mnras/stx3157
Spiewak, R., Bailes, M., Barr, E. D., Bhat, N. D. R., Burgay, M., Cameron, A. D., Champion, D. J., Flynn, C. M. L., Jameson, A., Johnston, S., et al. (2018). PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475, 469-477.
Spiewak, R., et al., 2018. PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 475(1), p 469-477.
R. Spiewak, et al., “PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion”, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 475, 2018, pp. 469-477.
Spiewak, R., Bailes, M., Barr, E.D., Bhat, N.D.R., Burgay, M., Cameron, A.D., Champion, D.J., Flynn, C.M.L., Jameson, A., Johnston, S., Keith, M.J., Kramer, M., Kulkarni, S.R., Levin, L., Lyne, A.G., Morello, V., Ng, C., Possenti, A., Ravi, V., Stappers, B.W., van Straten, W., Tiburzi, C.: PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 475, 469-477 (2018).
Spiewak, R., Bailes, M., Barr, E. D., Bhat, N. D. R., Burgay, M., Cameron, A. D., Champion, D. J., Flynn, C. M. L., Jameson, A., Johnston, S., Keith, M. J., Kramer, M., Kulkarni, S. R., Levin, L., Lyne, A. G., Morello, V., Ng, C., Possenti, A., Ravi, V., Stappers, B. W., van Straten, W., and Tiburzi, Caterina. “PSR J2322-2650-a low-luminosity millisecond pulsar with a planetary-mass companion”. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.1 (2018): 469-477.