Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey

F. Crawford; K. Stovall; A. G. Lyne; B. W. Stappers; D. J. Nice; I. H. Stairs; P. Lazarus; J. W T Hessels; P. C C Freire; B. Allen; N. D R Bhat; S. Bogdanov; A. Brazier; F. Camilo; D. J. Champion; S. Chatterjee; I. Cognard; J. M. Cordes; J. S. Deneva; G. Desvignes; F. A. Jenet; V. M. Kaspi; B. Knispel; M. Kramer; J. Van Leeuwen; D. R. Lorimer; R. Lynch; M. A. McLaughlin; S. M. Ransom; P. Scholz; X. Siemens; A. Venkataraman

doi:10.1088/0004-637X/757/1/90

Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey

F. Crawford, K. Stovall, A. G. Lyne, B. W. Stappers, D. J. Nice, I. H. Stairs, P. Lazarus, J. W T Hessels, P. C C Freire, B. Allen, N. D R Bhat, S. Bogdanov, A. Brazier, F. Camilo, D. J. Champion, S. Chatterjee, I. Cognard, J. M. Cordes, J. S. Deneva, G. DesvignesF. A. Jenet, V. M. Kaspi, B. Knispel, M. Kramer, J. Van Leeuwen, D. R. Lorimer, R. Lynch, M. A. McLaughlin, S. M. Ransom, P. Scholz, X. Siemens, A. Venkataraman

Research output: Contribution to journal › Article › peer-review

Abstract

We present the discovery and phase-coherent timing of four highly dispersed millisecond pulsars (MSPs) from the Arecibo PALFA Galactic plane survey: PSRs J1844+0115, J1850+0124, J1900+0308, and J1944+2236. Three of the four pulsars are in binary systems with low-mass companions, which are most likely white dwarfs, and which have orbital periods on the order of days. The fourth pulsar is isolated. All four pulsars have large dispersion measures (DM >100 pccm-3), are distant (≳ 3.4kpc), faint at 1.4GHz (≲ 0.2mJy), and are fully recycled (with spin periods P between 3.5 and 4.9ms). The three binaries also have very small orbital eccentricities, as expected for tidally circularized, fully recycled systems with low-mass companions. These four pulsars have DM/P ratios that are among the highest values for field MSPs in the Galaxy. These discoveries bring the total number of confirmed MSPs from the PALFA survey to 15. The discovery of these MSPs illustrates the power of PALFA for finding weak, distant MSPs at low-Galactic latitudes. This is important for accurate estimates of the Galactic MSP population and for the number of MSPs that the Square Kilometer Array can be expected to detect. © 2012 The American Astronomical Society. All rights reserved.

Original language	English
Article number	90
Journal	Astrophysical Journal
Volume	757
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/757/1/90
Publication status	Published - 20 Sept 2012

Keywords

pulsars: general
pulsars: individual (PSR J1844+0115, PSR J1850+0124, PSR J1900+0308, PSR J1944+2236)
surveys

Access to Document

10.1088/0004-637X/757/1/90

Cite this

Crawford, F., Stovall, K., Lyne, A. G., Stappers, B. W., Nice, D. J., Stairs, I. H., Lazarus, P., Hessels, J. W. T., Freire, P. C. C., Allen, B., Bhat, N. D. R., Bogdanov, S., Brazier, A., Camilo, F., Champion, D. J., Chatterjee, S., Cognard, I., Cordes, J. M., Deneva, J. S., ... Venkataraman, A. (2012). Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey. Astrophysical Journal, 757(1), Article 90. https://doi.org/10.1088/0004-637X/757/1/90

@article{a77dbd22a4fb4017ad0d467f0cbd65bc,

title = "Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey",

abstract = "We present the discovery and phase-coherent timing of four highly dispersed millisecond pulsars (MSPs) from the Arecibo PALFA Galactic plane survey: PSRs J1844+0115, J1850+0124, J1900+0308, and J1944+2236. Three of the four pulsars are in binary systems with low-mass companions, which are most likely white dwarfs, and which have orbital periods on the order of days. The fourth pulsar is isolated. All four pulsars have large dispersion measures (DM >100 pccm-3), are distant (≳ 3.4kpc), faint at 1.4GHz (≲ 0.2mJy), and are fully recycled (with spin periods P between 3.5 and 4.9ms). The three binaries also have very small orbital eccentricities, as expected for tidally circularized, fully recycled systems with low-mass companions. These four pulsars have DM/P ratios that are among the highest values for field MSPs in the Galaxy. These discoveries bring the total number of confirmed MSPs from the PALFA survey to 15. The discovery of these MSPs illustrates the power of PALFA for finding weak, distant MSPs at low-Galactic latitudes. This is important for accurate estimates of the Galactic MSP population and for the number of MSPs that the Square Kilometer Array can be expected to detect. {\textcopyright} 2012 The American Astronomical Society. All rights reserved.",

keywords = "pulsars: general, pulsars: individual (PSR J1844+0115, PSR J1850+0124, PSR J1900+0308, PSR J1944+2236), surveys",

author = "F. Crawford and K. Stovall and Lyne, {A. G.} and Stappers, {B. W.} and Nice, {D. J.} and Stairs, {I. H.} and P. Lazarus and Hessels, {J. W T} and Freire, {P. C C} and B. Allen and Bhat, {N. D R} and S. Bogdanov and A. Brazier and F. Camilo and Champion, {D. J.} and S. Chatterjee and I. Cognard and Cordes, {J. M.} and Deneva, {J. S.} and G. Desvignes and Jenet, {F. A.} and Kaspi, {V. M.} and B. Knispel and M. Kramer and {Van Leeuwen}, J. and Lorimer, {D. R.} and R. Lynch and McLaughlin, {M. A.} and Ransom, {S. M.} and P. Scholz and X. Siemens and A. Venkataraman",

year = "2012",

month = sep,

day = "20",

doi = "10.1088/0004-637X/757/1/90",

language = "English",

volume = "757",

journal = "Astrophysical Journal",

issn = "1538-4357",

publisher = "American Astronomical Society",

number = "1",

}

Crawford, F, Stovall, K, Lyne, AG, Stappers, BW, Nice, DJ, Stairs, IH, Lazarus, P, Hessels, JWT, Freire, PCC, Allen, B, Bhat, NDR, Bogdanov, S, Brazier, A, Camilo, F, Champion, DJ, Chatterjee, S, Cognard, I, Cordes, JM, Deneva, JS, Desvignes, G, Jenet, FA, Kaspi, VM, Knispel, B, Kramer, M, Van Leeuwen, J, Lorimer, DR, Lynch, R, McLaughlin, MA, Ransom, SM, Scholz, P, Siemens, X & Venkataraman, A 2012, 'Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey', Astrophysical Journal, vol. 757, no. 1, 90. https://doi.org/10.1088/0004-637X/757/1/90

TY - JOUR

T1 - Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey

AU - Crawford, F.

AU - Stovall, K.

AU - Lyne, A. G.

AU - Stappers, B. W.

AU - Nice, D. J.

AU - Stairs, I. H.

AU - Lazarus, P.

AU - Hessels, J. W T

AU - Freire, P. C C

AU - Allen, B.

AU - Bhat, N. D R

AU - Bogdanov, S.

AU - Brazier, A.

AU - Camilo, F.

AU - Champion, D. J.

AU - Chatterjee, S.

AU - Cognard, I.

AU - Cordes, J. M.

AU - Deneva, J. S.

AU - Desvignes, G.

AU - Jenet, F. A.

AU - Kaspi, V. M.

AU - Knispel, B.

AU - Kramer, M.

AU - Van Leeuwen, J.

AU - Lorimer, D. R.

AU - Lynch, R.

AU - McLaughlin, M. A.

AU - Ransom, S. M.

AU - Scholz, P.

AU - Siemens, X.

AU - Venkataraman, A.

PY - 2012/9/20

Y1 - 2012/9/20

N2 - We present the discovery and phase-coherent timing of four highly dispersed millisecond pulsars (MSPs) from the Arecibo PALFA Galactic plane survey: PSRs J1844+0115, J1850+0124, J1900+0308, and J1944+2236. Three of the four pulsars are in binary systems with low-mass companions, which are most likely white dwarfs, and which have orbital periods on the order of days. The fourth pulsar is isolated. All four pulsars have large dispersion measures (DM >100 pccm-3), are distant (≳ 3.4kpc), faint at 1.4GHz (≲ 0.2mJy), and are fully recycled (with spin periods P between 3.5 and 4.9ms). The three binaries also have very small orbital eccentricities, as expected for tidally circularized, fully recycled systems with low-mass companions. These four pulsars have DM/P ratios that are among the highest values for field MSPs in the Galaxy. These discoveries bring the total number of confirmed MSPs from the PALFA survey to 15. The discovery of these MSPs illustrates the power of PALFA for finding weak, distant MSPs at low-Galactic latitudes. This is important for accurate estimates of the Galactic MSP population and for the number of MSPs that the Square Kilometer Array can be expected to detect. © 2012 The American Astronomical Society. All rights reserved.

AB - We present the discovery and phase-coherent timing of four highly dispersed millisecond pulsars (MSPs) from the Arecibo PALFA Galactic plane survey: PSRs J1844+0115, J1850+0124, J1900+0308, and J1944+2236. Three of the four pulsars are in binary systems with low-mass companions, which are most likely white dwarfs, and which have orbital periods on the order of days. The fourth pulsar is isolated. All four pulsars have large dispersion measures (DM >100 pccm-3), are distant (≳ 3.4kpc), faint at 1.4GHz (≲ 0.2mJy), and are fully recycled (with spin periods P between 3.5 and 4.9ms). The three binaries also have very small orbital eccentricities, as expected for tidally circularized, fully recycled systems with low-mass companions. These four pulsars have DM/P ratios that are among the highest values for field MSPs in the Galaxy. These discoveries bring the total number of confirmed MSPs from the PALFA survey to 15. The discovery of these MSPs illustrates the power of PALFA for finding weak, distant MSPs at low-Galactic latitudes. This is important for accurate estimates of the Galactic MSP population and for the number of MSPs that the Square Kilometer Array can be expected to detect. © 2012 The American Astronomical Society. All rights reserved.

KW - pulsars: general

KW - pulsars: individual (PSR J1844+0115, PSR J1850+0124, PSR J1900+0308, PSR J1944+2236)

KW - surveys

U2 - 10.1088/0004-637X/757/1/90

DO - 10.1088/0004-637X/757/1/90

M3 - Article

SN - 1538-4357

VL - 757

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 90

ER -

Four highly dispersed millisecond pulsars discovered in the arecibo palfa galactic plane survey

Abstract

Keywords

Access to Document

Fingerprint

Cite this