TeV emission from FSRQs: the first systematic and unbiased survey

VERITAS Collaboration

TeV emission from FSRQs: the first systematic and unbiased survey

VERITAS Collaboration

Department of Physics

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

Abstract

Flat spectrum radio quasars (FSRQs) have been detected at TeV energies by ground-based atmospheric Cherenkov telescopes mainly during flaring states. VERITAS is carrying out the first systematic and unbiased search for TeV emissions from a set of FSRQs. Fermi-LAT-detected FSRQs with positive declinations and extrapolated fluxes from the 3FHL catalog exceeding 1% Crab at >200 GeV after correcting for EBL absorption were selected for this survey, resulting in eight targets. Additionally, four FSRQs that were already detected at TeV energies are also included in this survey. In an unbiased fashion, the observations of 12 FSRQs, even without detection, will provide the first constraints on their duty cycle of TeV emission. We report the results from four of the 12 FSRQs observed during 2020-21 season in this work. For these sources, we also show the results from nearly simultaneous Fermi-LAT observations.

Original language	English
Article number	824
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

Cite this

@article{655e716e20b747759b63e1cb4a531fd9,

title = "TeV emission from FSRQs: the first systematic and unbiased survey",

abstract = "Flat spectrum radio quasars (FSRQs) have been detected at TeV energies by ground-based atmospheric Cherenkov telescopes mainly during flaring states. VERITAS is carrying out the first systematic and unbiased search for TeV emissions from a set of FSRQs. Fermi-LAT-detected FSRQs with positive declinations and extrapolated fluxes from the 3FHL catalog exceeding 1\% Crab at >200 GeV after correcting for EBL absorption were selected for this survey, resulting in eight targets. Additionally, four FSRQs that were already detected at TeV energies are also included in this survey. In an unbiased fashion, the observations of 12 FSRQs, even without detection, will provide the first constraints on their duty cycle of TeV emission. We report the results from four of the 12 FSRQs observed during 2020-21 season in this work. For these sources, we also show the results from nearly simultaneous Fermi-LAT observations.",

author = "\{VERITAS Collaboration\} 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 B. Hona 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 and E. Roache and Ryan, \{J. L.\} and I. Sadeh and M. Santander and Sembroski, \{G. H.\} and R. Shang and D. Tak and Vassiliev, \{V. V.\} and A. Weinstein and Williams, \{D. A.\} and Williamson, \{T. J.\}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - TeV emission from FSRQs

T2 - 37th International Cosmic Ray Conference, ICRC 2021

AU - VERITAS Collaboration

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 - Hona, B.

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.

AU - Roache, E.

AU - Ryan, J. L.

AU - Sadeh, I.

AU - Santander, M.

AU - Sembroski, G. H.

AU - Shang, R.

AU - Tak, D.

AU - Vassiliev, V. V.

AU - Weinstein, A.

AU - Williams, D. A.

AU - Williamson, T. J.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2022/3/18

Y1 - 2022/3/18

N2 - Flat spectrum radio quasars (FSRQs) have been detected at TeV energies by ground-based atmospheric Cherenkov telescopes mainly during flaring states. VERITAS is carrying out the first systematic and unbiased search for TeV emissions from a set of FSRQs. Fermi-LAT-detected FSRQs with positive declinations and extrapolated fluxes from the 3FHL catalog exceeding 1% Crab at >200 GeV after correcting for EBL absorption were selected for this survey, resulting in eight targets. Additionally, four FSRQs that were already detected at TeV energies are also included in this survey. In an unbiased fashion, the observations of 12 FSRQs, even without detection, will provide the first constraints on their duty cycle of TeV emission. We report the results from four of the 12 FSRQs observed during 2020-21 season in this work. For these sources, we also show the results from nearly simultaneous Fermi-LAT observations.

AB - Flat spectrum radio quasars (FSRQs) have been detected at TeV energies by ground-based atmospheric Cherenkov telescopes mainly during flaring states. VERITAS is carrying out the first systematic and unbiased search for TeV emissions from a set of FSRQs. Fermi-LAT-detected FSRQs with positive declinations and extrapolated fluxes from the 3FHL catalog exceeding 1% Crab at >200 GeV after correcting for EBL absorption were selected for this survey, resulting in eight targets. Additionally, four FSRQs that were already detected at TeV energies are also included in this survey. In an unbiased fashion, the observations of 12 FSRQs, even without detection, will provide the first constraints on their duty cycle of TeV emission. We report the results from four of the 12 FSRQs observed during 2020-21 season in this work. For these sources, we also show the results from nearly simultaneous Fermi-LAT observations.

UR - https://www.scopus.com/pages/publications/85144344497

M3 - Conference article

AN - SCOPUS:85144344497

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 824

Y2 - 12 July 2021 through 23 July 2021

ER -

TeV emission from FSRQs: the first systematic and unbiased survey

Abstract

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