A search for pulsations from geminga above 100 GeV with veritas

M. P. Connolly; Gary Gillanders; Patrick Moriarty; M. J. Lang

doi:10.13025/15605

A search for pulsations from geminga above 100 GeV with veritas

M. P. Connolly
, Gary Gillanders
, Patrick Moriarty
, M. J. Lang

Physics

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25 Citations (Scopus)

Abstract

We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were phase-folded using a Geminga pulsar timing solution derived from data recorded by the XMM-Newton and Fermi-LAT space telescopes. No significant pulsed emission above 100 GeV is observed, and we report upper limits at the 95% confidence level on the integral flux above 135 GeV (spectral analysis threshold) of 4.0 × 10^-13 s^-1 cm^-2 and 1.7 × 10^-13 s^-1 cm^-2 for the two principal peaks in the emission profile. These upper limits, placed in context with phase-resolved spectral energy distributions determined from 5 yr of data from the Fermi-Large Area Telescope (LAT), constrain possible hardening of the Geminga pulsar emission spectra above ∼50 GeV.

Original language	English
Article number	61
Journal	Astrophysical Journal
Volume	800
Issue number	1
DOIs	https://doi.org/10.13025/15605 https://doi.org/10.1088/0004-637x/800/1/61
Publication status	Published - 10 Feb 2015

Keywords

Gamma rays: Stars
Pulsars: General
Pulsars: Individual (psr j0633+1746, geminga)

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10.13025/15605Licence: CC BY-NC-ND
10.1088/0004-637x/800/1/61

1412Accepted author manuscript, 452 KBLicence: CC BY-NC-ND

Cite this

@article{51e60037edfe4eaf94ab0f80ded57344,

title = "A search for pulsations from geminga above 100 GeV with veritas",

abstract = "We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were phase-folded using a Geminga pulsar timing solution derived from data recorded by the XMM-Newton and Fermi-LAT space telescopes. No significant pulsed emission above 100 GeV is observed, and we report upper limits at the 95\% confidence level on the integral flux above 135 GeV (spectral analysis threshold) of 4.0 {\texttimes} 10-13 s-1 cm-2 and 1.7 {\texttimes} 10-13 s-1 cm-2 for the two principal peaks in the emission profile. These upper limits, placed in context with phase-resolved spectral energy distributions determined from 5 yr of data from the Fermi-Large Area Telescope (LAT), constrain possible hardening of the Geminga pulsar emission spectra above ∼50 GeV.",

keywords = "Gamma rays: Stars, Pulsars: General, Pulsars: Individual (psr j0633+1746, geminga)",

author = "Connolly, \{M. P.\} and Gary Gillanders and Patrick Moriarty and Lang, \{M. J.\}",

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T1 - A search for pulsations from geminga above 100 GeV with veritas

AU - Connolly, M. P.

AU - Gillanders, Gary

AU - Moriarty, Patrick

AU - Lang, M. J.

PY - 2015/2/10

Y1 - 2015/2/10

N2 - We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were phase-folded using a Geminga pulsar timing solution derived from data recorded by the XMM-Newton and Fermi-LAT space telescopes. No significant pulsed emission above 100 GeV is observed, and we report upper limits at the 95% confidence level on the integral flux above 135 GeV (spectral analysis threshold) of 4.0 × 10-13 s-1 cm-2 and 1.7 × 10-13 s-1 cm-2 for the two principal peaks in the emission profile. These upper limits, placed in context with phase-resolved spectral energy distributions determined from 5 yr of data from the Fermi-Large Area Telescope (LAT), constrain possible hardening of the Geminga pulsar emission spectra above ∼50 GeV.

AB - We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were phase-folded using a Geminga pulsar timing solution derived from data recorded by the XMM-Newton and Fermi-LAT space telescopes. No significant pulsed emission above 100 GeV is observed, and we report upper limits at the 95% confidence level on the integral flux above 135 GeV (spectral analysis threshold) of 4.0 × 10-13 s-1 cm-2 and 1.7 × 10-13 s-1 cm-2 for the two principal peaks in the emission profile. These upper limits, placed in context with phase-resolved spectral energy distributions determined from 5 yr of data from the Fermi-Large Area Telescope (LAT), constrain possible hardening of the Geminga pulsar emission spectra above ∼50 GeV.

KW - Gamma rays: Stars

KW - Pulsars: General

KW - Pulsars: Individual (psr j0633+1746, geminga)

UR - http://hdl.handle.net/10379/5672

UR - https://www.scopus.com/pages/publications/84922726681

U2 - 10.13025/15605

DO - 10.13025/15605

M3 - Article

SN - 0004-637X

VL - 800

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 61

ER -

A search for pulsations from geminga above 100 GeV with veritas

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Keywords

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