Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510

D. L. Kaplan, K. Stovall, S. M. Ransom, Mallory Roberts, R. Kotulla, A. M. Archibald, C. M. Biwer, J. Boyles, L. Dartez, D. F. Day, A. J. Ford, A. Garcia, J. W.T. Hessels, F. A. Jenet, C. Karako, V. M. Kaspi, V. I. Kondratiev, D. R. Lorimer, R. S. Lynch, M. A. McLaughlinM. D.W. Rohr, X. Siemens, I. H. Stairs, J. Van Leeuwen

Research output: Contribution to journalReview article

Abstract

The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7hr and a minimum companion mass of 0.16M , it appears to belong to an increasingly important class of pulsars that are ablating their low-mass companions. We report the discovery of the γ-ray counterpart to this pulsar and present a likely optical/ultraviolet counterpart as well. Using the radio ephemeris, we detect pulsations in the unclassified γ-ray source 2FGL J1816.5+4511, implying an efficiency of 25% in converting the pulsar's spin-down luminosity into γ-rays and adding PSR J1816+4510 to the large number of millisecond pulsars detected by Fermi. The likely optical/UV counterpart was identified through position coincidence (<01) and unusual colors. Assuming that it is the companion, with R = 18.27 ± 0.03mag and effective temperature ≳ 15,000K, it would be among the brightest and hottest of low-mass pulsar companions and appears qualitatively different from other eclipsing pulsar systems. In particular, current data suggest that it is a factor of two larger than most white dwarfs of its mass but a factor of four smaller than its Roche lobe. We discuss possible reasons for its high temperature and odd size, and suggest that it recently underwent a violent episode of mass loss. Regardless of origin, its brightness and the relative unimportance of irradiation make it an ideal target for a mass, and hence a neutron star mass, determination.

Original languageEnglish (US)
Article number174
JournalAstrophysical Journal
Volume753
Issue number2
DOIs
StatePublished - Jul 10 2012

Fingerprint

pulsars
gamma rays
rays
radio
lobes
neutron stars
irradiation
brightness
energetics
luminosity
telescopes
low frequencies
color
orbitals
temperature

Keywords

  • binaries: eclipsing
  • gamma rays: stars
  • ultraviolet: stars
  • white dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510. / Kaplan, D. L.; Stovall, K.; Ransom, S. M.; Roberts, Mallory; Kotulla, R.; Archibald, A. M.; Biwer, C. M.; Boyles, J.; Dartez, L.; Day, D. F.; Ford, A. J.; Garcia, A.; Hessels, J. W.T.; Jenet, F. A.; Karako, C.; Kaspi, V. M.; Kondratiev, V. I.; Lorimer, D. R.; Lynch, R. S.; McLaughlin, M. A.; Rohr, M. D.W.; Siemens, X.; Stairs, I. H.; Van Leeuwen, J.

In: Astrophysical Journal, Vol. 753, No. 2, 174, 10.07.2012.

Research output: Contribution to journalReview article

Kaplan, DL, Stovall, K, Ransom, SM, Roberts, M, Kotulla, R, Archibald, AM, Biwer, CM, Boyles, J, Dartez, L, Day, DF, Ford, AJ, Garcia, A, Hessels, JWT, Jenet, FA, Karako, C, Kaspi, VM, Kondratiev, VI, Lorimer, DR, Lynch, RS, McLaughlin, MA, Rohr, MDW, Siemens, X, Stairs, IH & Van Leeuwen, J 2012, 'Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510', Astrophysical Journal, vol. 753, no. 2, 174. https://doi.org/10.1088/0004-637X/753/2/174
Kaplan, D. L. ; Stovall, K. ; Ransom, S. M. ; Roberts, Mallory ; Kotulla, R. ; Archibald, A. M. ; Biwer, C. M. ; Boyles, J. ; Dartez, L. ; Day, D. F. ; Ford, A. J. ; Garcia, A. ; Hessels, J. W.T. ; Jenet, F. A. ; Karako, C. ; Kaspi, V. M. ; Kondratiev, V. I. ; Lorimer, D. R. ; Lynch, R. S. ; McLaughlin, M. A. ; Rohr, M. D.W. ; Siemens, X. ; Stairs, I. H. ; Van Leeuwen, J. / Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510. In: Astrophysical Journal. 2012 ; Vol. 753, No. 2.
@article{f312e6aae77441f3bdf46981ad5d0ee7,
title = "Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510",
abstract = "The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7hr and a minimum companion mass of 0.16M ⊙, it appears to belong to an increasingly important class of pulsars that are ablating their low-mass companions. We report the discovery of the γ-ray counterpart to this pulsar and present a likely optical/ultraviolet counterpart as well. Using the radio ephemeris, we detect pulsations in the unclassified γ-ray source 2FGL J1816.5+4511, implying an efficiency of 25{\%} in converting the pulsar's spin-down luminosity into γ-rays and adding PSR J1816+4510 to the large number of millisecond pulsars detected by Fermi. The likely optical/UV counterpart was identified through position coincidence (<01) and unusual colors. Assuming that it is the companion, with R = 18.27 ± 0.03mag and effective temperature ≳ 15,000K, it would be among the brightest and hottest of low-mass pulsar companions and appears qualitatively different from other eclipsing pulsar systems. In particular, current data suggest that it is a factor of two larger than most white dwarfs of its mass but a factor of four smaller than its Roche lobe. We discuss possible reasons for its high temperature and odd size, and suggest that it recently underwent a violent episode of mass loss. Regardless of origin, its brightness and the relative unimportance of irradiation make it an ideal target for a mass, and hence a neutron star mass, determination.",
keywords = "binaries: eclipsing, gamma rays: stars, ultraviolet: stars, white dwarfs",
author = "Kaplan, {D. L.} and K. Stovall and Ransom, {S. M.} and Mallory Roberts and R. Kotulla and Archibald, {A. M.} and Biwer, {C. M.} and J. Boyles and L. Dartez and Day, {D. F.} and Ford, {A. J.} and A. Garcia and Hessels, {J. W.T.} and Jenet, {F. A.} and C. Karako and Kaspi, {V. M.} and Kondratiev, {V. I.} and Lorimer, {D. R.} and Lynch, {R. S.} and McLaughlin, {M. A.} and Rohr, {M. D.W.} and X. Siemens and Stairs, {I. H.} and {Van Leeuwen}, J.",
year = "2012",
month = "7",
day = "10",
doi = "10.1088/0004-637X/753/2/174",
language = "English (US)",
volume = "753",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - Discovery of the optical/ultraviolet/gamma-ray counterpart to the eclipsing millisecond pulsar J1816+4510

AU - Kaplan, D. L.

AU - Stovall, K.

AU - Ransom, S. M.

AU - Roberts, Mallory

AU - Kotulla, R.

AU - Archibald, A. M.

AU - Biwer, C. M.

AU - Boyles, J.

AU - Dartez, L.

AU - Day, D. F.

AU - Ford, A. J.

AU - Garcia, A.

AU - Hessels, J. W.T.

AU - Jenet, F. A.

AU - Karako, C.

AU - Kaspi, V. M.

AU - Kondratiev, V. I.

AU - Lorimer, D. R.

AU - Lynch, R. S.

AU - McLaughlin, M. A.

AU - Rohr, M. D.W.

AU - Siemens, X.

AU - Stairs, I. H.

AU - Van Leeuwen, J.

PY - 2012/7/10

Y1 - 2012/7/10

N2 - The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7hr and a minimum companion mass of 0.16M ⊙, it appears to belong to an increasingly important class of pulsars that are ablating their low-mass companions. We report the discovery of the γ-ray counterpart to this pulsar and present a likely optical/ultraviolet counterpart as well. Using the radio ephemeris, we detect pulsations in the unclassified γ-ray source 2FGL J1816.5+4511, implying an efficiency of 25% in converting the pulsar's spin-down luminosity into γ-rays and adding PSR J1816+4510 to the large number of millisecond pulsars detected by Fermi. The likely optical/UV counterpart was identified through position coincidence (<01) and unusual colors. Assuming that it is the companion, with R = 18.27 ± 0.03mag and effective temperature ≳ 15,000K, it would be among the brightest and hottest of low-mass pulsar companions and appears qualitatively different from other eclipsing pulsar systems. In particular, current data suggest that it is a factor of two larger than most white dwarfs of its mass but a factor of four smaller than its Roche lobe. We discuss possible reasons for its high temperature and odd size, and suggest that it recently underwent a violent episode of mass loss. Regardless of origin, its brightness and the relative unimportance of irradiation make it an ideal target for a mass, and hence a neutron star mass, determination.

AB - The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7hr and a minimum companion mass of 0.16M ⊙, it appears to belong to an increasingly important class of pulsars that are ablating their low-mass companions. We report the discovery of the γ-ray counterpart to this pulsar and present a likely optical/ultraviolet counterpart as well. Using the radio ephemeris, we detect pulsations in the unclassified γ-ray source 2FGL J1816.5+4511, implying an efficiency of 25% in converting the pulsar's spin-down luminosity into γ-rays and adding PSR J1816+4510 to the large number of millisecond pulsars detected by Fermi. The likely optical/UV counterpart was identified through position coincidence (<01) and unusual colors. Assuming that it is the companion, with R = 18.27 ± 0.03mag and effective temperature ≳ 15,000K, it would be among the brightest and hottest of low-mass pulsar companions and appears qualitatively different from other eclipsing pulsar systems. In particular, current data suggest that it is a factor of two larger than most white dwarfs of its mass but a factor of four smaller than its Roche lobe. We discuss possible reasons for its high temperature and odd size, and suggest that it recently underwent a violent episode of mass loss. Regardless of origin, its brightness and the relative unimportance of irradiation make it an ideal target for a mass, and hence a neutron star mass, determination.

KW - binaries: eclipsing

KW - gamma rays: stars

KW - ultraviolet: stars

KW - white dwarfs

UR - http://www.scopus.com/inward/record.url?scp=84863319689&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863319689&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/753/2/174

DO - 10.1088/0004-637X/753/2/174

M3 - Review article

AN - SCOPUS:84863319689

VL - 753

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 174

ER -