Matched Runs Method to Study Extended Regions of Gamma-ray Emission

The VERITAS Collaboration

Matched Runs Method to Study Extended Regions of Gamma-ray Emission

The VERITAS Collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Conference article › peer-review

Abstract

Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Telescope Array System (VERITAS), are uniquely suited to resolve the detailed morphology of extended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°), due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched Runs Method and multiple validation studies on different gamma-ray sources using VERITAS data.

Original language	English (US)
Article number	729
Journal	Proceedings of Science
Volume	395
State	Published - Mar 18 2022
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: Jul 12 2021 → Jul 23 2021

Bibliographical note

Funding Information:
This research is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, by NSERC in Canada, and by the Helmholtz Association in Germany. This research used resources provided by the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy’s Office of Science, and resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument.

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© 2022 Sissa Medialab Srl. All rights reserved.

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@article{f3762a421ee84075a198792d47956945,

title = "Matched Runs Method to Study Extended Regions of Gamma-ray Emission",

abstract = "Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Telescope Array System (VERITAS), are uniquely suited to resolve the detailed morphology of extended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°), due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched Runs Method and multiple validation studies on different gamma-ray sources using VERITAS data.",

author = "{The VERITAS Collaboration} and Binita Hona and Adams, {C. B.} and A. Archer and W. Benbow and A. Brill and Buckley, {J. H.} and M. Capasso and Christiansen, {J. L.} and Chromey, {A. J.} and M. Errando and A. Falcone and Farrell, {K. A.} and Q. Feng and Foote, {G. M.} and L. Fortson and A. Furniss and A. Gent and Gillanders, {G. H.} and C. Giuri and O. Gueta and D. Hanna and O. Hervet and J. Holder and Humensky, {T. B.} and W. Jin and P. Kaaret and M. Kertzman and Kleiner, {T. K.} and S. Kumar and Lang, {M. J.} and M. Lundy and G. Maier and McGrath, {C. E.} and P. Moriarty and R. Mukherjee and D. Nieto and M. Nievas-Rosillo and S. O'Brien and Ong, {R. A.} and Otte, {A. N.} and Patel, {S. R.} and S. Patel and K. Pfrang and M. Pohl and Prado, {R. R.} and E. Pueschel and J. Quinn and K. Ragan and Reynolds, {P. T.} and D. Ribeiro",

note = "Funding Information: This research is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, by NSERC in Canada, and by the Helmholtz Association in Germany. This research used resources provided by the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy{\textquoteright}s Office of Science, and resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument. Publisher Copyright: {\textcopyright} 2022 Sissa Medialab Srl. All rights reserved.; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English (US)",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Matched Runs Method to Study Extended Regions of Gamma-ray Emission

AU - The VERITAS Collaboration

AU - Hona, Binita

AU - Adams, C. B.

AU - Archer, A.

AU - Benbow, W.

AU - Brill, A.

AU - Buckley, J. H.

AU - Capasso, M.

AU - Christiansen, J. L.

AU - Chromey, A. J.

AU - Errando, M.

AU - Falcone, A.

AU - Farrell, K. A.

AU - Feng, Q.

AU - Foote, G. M.

AU - Fortson, L.

AU - Furniss, A.

AU - Gent, A.

AU - Gillanders, G. H.

AU - Giuri, C.

AU - Gueta, O.

AU - Hanna, D.

AU - Hervet, O.

AU - Holder, J.

AU - Humensky, T. B.

AU - Jin, W.

AU - Kaaret, P.

AU - Kertzman, M.

AU - Kleiner, T. K.

AU - Kumar, S.

AU - Lang, M. J.

AU - Lundy, M.

AU - Maier, G.

AU - McGrath, C. E.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nieto, D.

AU - Nievas-Rosillo, M.

AU - O'Brien, S.

AU - Ong, R. A.

AU - Otte, A. N.

AU - Patel, S. R.

AU - Patel, S.

AU - Pfrang, K.

AU - Pohl, M.

AU - Prado, R. R.

AU - Pueschel, E.

AU - Quinn, J.

AU - Ragan, K.

AU - Reynolds, P. T.

AU - Ribeiro, D.

N1 - Funding Information: This research is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, by NSERC in Canada, and by the Helmholtz Association in Germany. This research used resources provided by the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy’s Office of Science, and resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument. Publisher Copyright: © 2022 Sissa Medialab Srl. All rights reserved.

PY - 2022/3/18

Y1 - 2022/3/18

N2 - Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Telescope Array System (VERITAS), are uniquely suited to resolve the detailed morphology of extended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°), due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched Runs Method and multiple validation studies on different gamma-ray sources using VERITAS data.

AB - Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Telescope Array System (VERITAS), are uniquely suited to resolve the detailed morphology of extended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°), due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched Runs Method and multiple validation studies on different gamma-ray sources using VERITAS data.

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UR - http://www.scopus.com/inward/citedby.url?scp=85144627013&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85144627013

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 729

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Matched Runs Method to Study Extended Regions of Gamma-ray Emission

Abstract

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