Details
| Original language | English |
|---|---|
| Article number | 42 |
| Journal | Astrophysical Journal |
| Volume | 883 |
| Issue number | 1 |
| Early online date | 18 Sept 2019 |
| Publication status | Published - 20 Sept 2019 |
Abstract
The Low-Frequency Array radio telescope discovered the 707 Hz binary millisecond pulsar (MSP) J0952-0607 in a targeted radio pulsation search of an unidentified Fermi gamma-ray source. This source shows a weak energy flux of F γ = 2.6 ×10-12 erg cm-2 s-1 in the energy range between 100 MeV and 100 GeV. Here we report the detection of pulsed gamma-ray emission from PSR J0952-0607 in a very sensitive gamma-ray pulsation search. The pulsar's rotational, binary, and astrometric properties are measured over 7 years of Fermi-Large Area Telescope data. For this we take into account the uncertainty on the shape of the gamma-ray pulse profile. We present an updated radio-timing solution now spanning more than 2 years and show results from optical modeling of the black-widow-type companion based on new multiband photometric data taken with HiPERCAM on the Gran Telescopio Canarias on La Palma and ULTRACAM on the New Technology Telescope at ESO La Silla (based on observations collected at the European Southern Observatory, Chile; programme 0101.D-0925, PI: Clark, C. J.). PSR J0952-0607 is now the fastest-spinning pulsar for which the intrinsic spin-down rate has been reliably constrained (). The inferred surface magnetic field strength of is among the 10 lowest of all known pulsars. This discovery is another example of an extremely fast spinning black-widow pulsar hiding within an unidentified Fermi gamma-ray source. In the future such systems might help to pin down the maximum spin frequency and the minimum surface magnetic field strength of MSPs.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Astrophysical Journal, Vol. 883, No. 1, 42, 20.09.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952-0607
AU - Nieder, L.
AU - Clark, C. J.
AU - Bassa, C. G.
AU - Wu, J.
AU - Singh, Avneet
AU - Donner, J. Y.
AU - Allen, Bruce
AU - Breton, R. P.
AU - Dhillon, V. S.
AU - Eggenstein, H. B.
AU - Hessels, J. W.T.
AU - Kennedy, M. R.
AU - Kerr, M.
AU - Littlefair, S.
AU - Marsh, T. R.
AU - Sánchez, D. Mata
AU - Papa, M. A.
AU - Ray, P. S.
AU - Steltner, B.
AU - Verbiest, J. P.W.
PY - 2019/9/20
Y1 - 2019/9/20
N2 - The Low-Frequency Array radio telescope discovered the 707 Hz binary millisecond pulsar (MSP) J0952-0607 in a targeted radio pulsation search of an unidentified Fermi gamma-ray source. This source shows a weak energy flux of F γ = 2.6 ×10-12 erg cm-2 s-1 in the energy range between 100 MeV and 100 GeV. Here we report the detection of pulsed gamma-ray emission from PSR J0952-0607 in a very sensitive gamma-ray pulsation search. The pulsar's rotational, binary, and astrometric properties are measured over 7 years of Fermi-Large Area Telescope data. For this we take into account the uncertainty on the shape of the gamma-ray pulse profile. We present an updated radio-timing solution now spanning more than 2 years and show results from optical modeling of the black-widow-type companion based on new multiband photometric data taken with HiPERCAM on the Gran Telescopio Canarias on La Palma and ULTRACAM on the New Technology Telescope at ESO La Silla (based on observations collected at the European Southern Observatory, Chile; programme 0101.D-0925, PI: Clark, C. J.). PSR J0952-0607 is now the fastest-spinning pulsar for which the intrinsic spin-down rate has been reliably constrained (). The inferred surface magnetic field strength of is among the 10 lowest of all known pulsars. This discovery is another example of an extremely fast spinning black-widow pulsar hiding within an unidentified Fermi gamma-ray source. In the future such systems might help to pin down the maximum spin frequency and the minimum surface magnetic field strength of MSPs.
AB - The Low-Frequency Array radio telescope discovered the 707 Hz binary millisecond pulsar (MSP) J0952-0607 in a targeted radio pulsation search of an unidentified Fermi gamma-ray source. This source shows a weak energy flux of F γ = 2.6 ×10-12 erg cm-2 s-1 in the energy range between 100 MeV and 100 GeV. Here we report the detection of pulsed gamma-ray emission from PSR J0952-0607 in a very sensitive gamma-ray pulsation search. The pulsar's rotational, binary, and astrometric properties are measured over 7 years of Fermi-Large Area Telescope data. For this we take into account the uncertainty on the shape of the gamma-ray pulse profile. We present an updated radio-timing solution now spanning more than 2 years and show results from optical modeling of the black-widow-type companion based on new multiband photometric data taken with HiPERCAM on the Gran Telescopio Canarias on La Palma and ULTRACAM on the New Technology Telescope at ESO La Silla (based on observations collected at the European Southern Observatory, Chile; programme 0101.D-0925, PI: Clark, C. J.). PSR J0952-0607 is now the fastest-spinning pulsar for which the intrinsic spin-down rate has been reliably constrained (). The inferred surface magnetic field strength of is among the 10 lowest of all known pulsars. This discovery is another example of an extremely fast spinning black-widow pulsar hiding within an unidentified Fermi gamma-ray source. In the future such systems might help to pin down the maximum spin frequency and the minimum surface magnetic field strength of MSPs.
UR - http://www.scopus.com/inward/record.url?scp=85073076566&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1905.11352
DO - 10.48550/arXiv.1905.11352
M3 - Article
AN - SCOPUS:85073076566
VL - 883
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 42
ER -