The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope

M. Ackermann; M. Ajello; L. Baldini; J. Ballet; G. Barbiellini; D. Bastieri; R. Bellazzini; E. Bissaldi; R. D. Blandford; E. D. Bloom; R. Bonino; E. Bottacini; T. J. Brandt; J. Bregeon; P. Bruel; R. Buehler; R. A. Cameron; R. Caputo; P. A. Caraveo; D. Castro; E. Cavazzuti; E. Charles; C. C. Cheung; G. Chiaro; S. Ciprini; J. Cohen-Tanugi; D. Costantin; S. Cutini; F. D'Ammando; F. De Palma; A. Desai; N. Di Lalla; M. Di Mauro; L. Di Venere; C. Favuzzi; J. Finke; A. Franckowiak; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; N. Giglietto; F. Giordano; M. Giroletti; D. Green; I. A. Grenier; L. Guillemot; S. Guiriec; E. Hays; J. W. Hewitt; D. Horan; G. Jóhannesson; S. Kensei; M. Kuss; S. Larsson; L. Latronico; M. Lemoine-Goumard; J. Li; F. Longo; F. Loparco; M. N. Lovellette; P. Lubrano; J. D. Magill; S. Maldera; A. Manfreda; M. N. Mazziotta; J. E. McEnery; M. Meyer; T. Mizuno; M. E. Monzani; A. Morselli; I. V. Moskalenko; M. Negro; E. Nuss; N. Omodei; M. Orienti; E. Orlando; J. F. Ormes; M. Palatiello; V. S. Paliya; D. Paneque; J. S. Perkins; M. Persic; M. Pesce-Rollins; F. Piron; T. A. Porter; G. Principe; S. Rainò; R. Rando; B. Rani; S. Razzaque; A. Reimer; O. Reimer; T. Reposeur; C. Sgrò; E. J. Siskind; G. Spandre; P. Spinelli; D. J. Suson; H. Tajima; J. B. Thayer; L. Tibaldo; D. F. Torres; G. Tosti; J. Valverde; T. M. Venters; M. Vogel; K. Wood; M. Wood; G. Zaharijas; J. Biteau

doi:10.3847/1538-4365/aacdf7

The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope

M. Ackermann
, M. Ajello
, L. Baldini
, J. Ballet
, G. Barbiellini
, D. Bastieri
, R. Bellazzini
, E. Bissaldi
, R. D. Blandford
, E. D. Bloom
, R. Bonino
, E. Bottacini
, T. J. Brandt
, J. Bregeon
, P. Bruel
, R. Buehler
, R. A. Cameron
, R. Caputo
, P. A. Caraveo
, D. Castro

E. Cavazzuti, E. Charles, C. C. Cheung, G. Chiaro, S. Ciprini, J. Cohen-Tanugi, D. Costantin, S. Cutini, F. D'Ammando, F. De Palma, A. Desai, N. Di Lalla, M. Di Mauro, L. Di Venere, C. Favuzzi, J. Finke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, D. Green, I. A. Grenier, L. Guillemot, S. Guiriec, E. Hays, J. W. Hewitt, D. Horan, G. Jóhannesson, S. Kensei, M. Kuss, S. Larsson, L. Latronico, M. Lemoine-Goumard, J. Li, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, J. D. Magill, S. Maldera, A. Manfreda, M. N. Mazziotta, J. E. McEnery, M. Meyer, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, M. Negro, E. Nuss, N. Omodei, M. Orienti, E. Orlando, J. F. Ormes, M. Palatiello, V. S. Paliya, D. Paneque, J. S. Perkins, M. Persic, M. Pesce-Rollins, F. Piron, T. A. Porter, G. Principe, S. Rainò, R. Rando, B. Rani, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, D. J. Suson, H. Tajima, J. B. Thayer, L. Tibaldo, D. F. Torres, G. Tosti, J. Valverde, T. M. Venters, M. Vogel, K. Wood, M. Wood, G. Zaharijas, J. Biteau

c/o DESY
Department of Physics and Astronomy
Clemson University
Istituto Nazionale di Fisica Nucleare
University of Pisa
Universite Paris-Saclay
INFN Gruppo Collegato di Udine
INFN Sezione di Trieste
Dipartimento di Fisica
University of Trieste
INFN
INFN
University of Padova
INFN
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Politecnico di Bari
INFN
INFN Sezione di Bari
Department of Physics
Kavli Institute for Particle Astrophysics and Cosmology
Sezione di Torino
INFN Sezione di Torino
Dipartimento di Fisica
University of Turin
Department of Physics and Astronomy
NASA Goddard Space Flight Center
Laboratoire Univers et Particules de Montpellier
Center for Research and Exploration in Space Science and Technology (CRESST)
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan
Center for Astrophysics | Harvard & Smithsonian
Science and Research Directorate
Space Science Division
Naval Research Laboratory
Sezione di Perugia
INFN Sezione di Perugia
INAF Istituto di Radioastronomia
Dipartimento di Astronomia
University of Bologna
Università Telematica Pegaso
Department of Physical Science
Hiroshima University
Friedrich-Alexander-Universitat Erlangen-Nuremberg
Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
University of Maryland
conventionnée avec l'Université d'Orléans
CNRS
Department of Physics
George Washington University
Department of Physics
University of North Florida
University of Iceland
Stockholm University
Physics Department
KTH Royal Institute of Technology
Oskar Klein Centre
UMR 5797
University of São Paulo
Hiroshima Astrophysical Science Center
Sezione di Roma
Department of Physics and Astronomy
University of Denver
Max-Planck-Institut für Physik
INAF-Trieste
Department of Physics
University of Johannesburg
Medical University of Innsbruck
NYCB Real-Time Computing Inc.
Purdue University Northwest
Solar-Terrestrial Environment Laboratory
Nagoya University
IRAP/CNRS
Pompeu Fabra University (UPF)
INFM CRS-SOFT
University of Perugia
Ip Paris
Department of Physics and Astronomy
California State University-Los Angeles
Istituto Nazionale di Fisica Nucleare
Center for Astrophysics and Cosmology
University of Nova Gorica
Université Paris-Saclay

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

192 Citations (Scopus)

Résumé

We present a search for spatial extension in high-latitude (|b| > 5°) sources in recent Fermi point source catalogs. The result is the Fermi High-Latitude Extended Sources Catalog, which provides source extensions (or upper limits thereof) and likelihood profiles for a suite of tested source morphologies. We find 24 extended sources, 19 of which were not previously characterized as extended. These include sources that are potentially associated with supernova remnants and star-forming regions. We also found extended γ-ray emission in the vicinity of the Cen A radio lobes and-at GeV energies for the first time-spatially coincident with the radio emission of the SNR CTA 1, as well as from the Crab Nebula. We also searched for halos around active galactic nuclei, which are predicted from electromagnetic cascades induced by the e⁺e^? pairs that are deflected in intergalactic magnetic fields. These pairs are produced when ?-rays interact with background radiation fields. We do not find evidence for extension in individual sources or in stacked source samples. This enables us to place limits on the flux of the extended source components, which are then used to constrain the intergalactic magnetic field to be stronger than 3 × 10^?16 G for a coherence length λ ≳ 10 kpc, even when conservative assumptions on the source duty cycle are made. This improves previous limits by several orders of magnitude.

langue originale	Anglais
Numéro d'article	32
journal	Astrophysical Journal, Supplement Series
Volume	237
Numéro de publication	2
Les DOIs	https://doi.org/10.3847/1538-4365/aacdf7
état	Publié - 1 août 2018

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10.3847/1538-4365/aacdf7

Contient cette citation

Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Cameron, R. A., Caputo, R., Caraveo, P. A., ... Biteau, J. (2018). The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope. Astrophysical Journal, Supplement Series, 237(2), Article 32. https://doi.org/10.3847/1538-4365/aacdf7

@article{df601af7f11d4372926b2084c3e846ea,

title = "The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope",

abstract = "We present a search for spatial extension in high-latitude (|b| > 5°) sources in recent Fermi point source catalogs. The result is the Fermi High-Latitude Extended Sources Catalog, which provides source extensions (or upper limits thereof) and likelihood profiles for a suite of tested source morphologies. We find 24 extended sources, 19 of which were not previously characterized as extended. These include sources that are potentially associated with supernova remnants and star-forming regions. We also found extended γ-ray emission in the vicinity of the Cen A radio lobes and-at GeV energies for the first time-spatially coincident with the radio emission of the SNR CTA 1, as well as from the Crab Nebula. We also searched for halos around active galactic nuclei, which are predicted from electromagnetic cascades induced by the e+e? pairs that are deflected in intergalactic magnetic fields. These pairs are produced when ?-rays interact with background radiation fields. We do not find evidence for extension in individual sources or in stacked source samples. This enables us to place limits on the flux of the extended source components, which are then used to constrain the intergalactic magnetic field to be stronger than 3 {\texttimes} 10?16 G for a coherence length λ ≳ 10 kpc, even when conservative assumptions on the source duty cycle are made. This improves previous limits by several orders of magnitude.",

keywords = "BL Lacertae objects: general, ISM: H II Regions, ISM: supernova remnants, catalogs, gamma rays: general",

author = "M. Ackermann and M. Ajello and L. Baldini and J. Ballet and G. Barbiellini and D. Bastieri and R. Bellazzini and E. Bissaldi and Blandford, \{R. D.\} and Bloom, \{E. D.\} and R. Bonino and E. Bottacini and Brandt, \{T. J.\} and J. Bregeon and P. Bruel and R. Buehler and Cameron, \{R. A.\} and R. Caputo and Caraveo, \{P. A.\} and D. Castro and E. Cavazzuti and E. Charles and Cheung, \{C. C.\} and G. Chiaro and S. Ciprini and J. Cohen-Tanugi and D. Costantin and S. Cutini and F. D'Ammando and \{De Palma\}, F. and A. Desai and \{Di Lalla\}, N. and \{Di Mauro\}, M. and \{Di Venere\}, L. and C. Favuzzi and J. Finke and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and N. Giglietto and F. Giordano and M. Giroletti and D. Green and Grenier, \{I. A.\} and L. Guillemot and S. Guiriec and E. Hays and Hewitt, \{J. W.\} and D. Horan and G. J{\'o}hannesson and S. Kensei and M. Kuss and S. Larsson and L. Latronico and M. Lemoine-Goumard and J. Li and F. Longo and F. Loparco and Lovellette, \{M. N.\} and P. Lubrano and Magill, \{J. D.\} and S. Maldera and A. Manfreda and Mazziotta, \{M. N.\} and McEnery, \{J. E.\} and M. Meyer and T. Mizuno and Monzani, \{M. E.\} and A. Morselli and Moskalenko, \{I. V.\} and M. Negro and E. Nuss and N. Omodei and M. Orienti and E. Orlando and Ormes, \{J. F.\} and M. Palatiello and Paliya, \{V. S.\} and D. Paneque and Perkins, \{J. S.\} and M. Persic and M. Pesce-Rollins and F. Piron and Porter, \{T. A.\} and G. Principe and S. Rain{\`o} and R. Rando and B. Rani and S. Razzaque and A. Reimer and O. Reimer and T. Reposeur and C. Sgr{\`o} and Siskind, \{E. J.\} and G. Spandre and P. Spinelli and Suson, \{D. J.\} and H. Tajima and Thayer, \{J. B.\} and L. Tibaldo and Torres, \{D. F.\} and G. Tosti and J. Valverde and Venters, \{T. M.\} and M. Vogel and K. Wood and M. Wood and G. Zaharijas and J. Biteau",

year = "2018",

month = aug,

day = "1",

doi = "10.3847/1538-4365/aacdf7",

language = "English",

volume = "237",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

publisher = "American Astronomical Society",

number = "2",

}

Ackermann, M, Ajello, M, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Bellazzini, R, Bissaldi, E, Blandford, RD, Bloom, ED, Bonino, R, Bottacini, E, Brandt, TJ, Bregeon, J, Bruel, P, Buehler, R, Cameron, RA, Caputo, R, Caraveo, PA, Castro, D, Cavazzuti, E, Charles, E, Cheung, CC, Chiaro, G, Ciprini, S, Cohen-Tanugi, J, Costantin, D, Cutini, S, D'Ammando, F, De Palma, F, Desai, A, Di Lalla, N, Di Mauro, M, Di Venere, L, Favuzzi, C, Finke, J, Franckowiak, A, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Giglietto, N, Giordano, F, Giroletti, M, Green, D, Grenier, IA, Guillemot, L, Guiriec, S, Hays, E, Hewitt, JW, Horan, D, Jóhannesson, G, Kensei, S, Kuss, M, Larsson, S, Latronico, L, Lemoine-Goumard, M, Li, J, Longo, F, Loparco, F, Lovellette, MN, Lubrano, P, Magill, JD, Maldera, S, Manfreda, A, Mazziotta, MN, McEnery, JE, Meyer, M, Mizuno, T, Monzani, ME, Morselli, A, Moskalenko, IV, Negro, M, Nuss, E, Omodei, N, Orienti, M, Orlando, E, Ormes, JF, Palatiello, M, Paliya, VS, Paneque, D, Perkins, JS, Persic, M, Pesce-Rollins, M, Piron, F, Porter, TA, Principe, G, Rainò, S, Rando, R, Rani, B, Razzaque, S, Reimer, A, Reimer, O, Reposeur, T, Sgrò, C, Siskind, EJ, Spandre, G, Spinelli, P, Suson, DJ, Tajima, H, Thayer, JB, Tibaldo, L, Torres, DF, Tosti, G, Valverde, J, Venters, TM, Vogel, M, Wood, K, Wood, M, Zaharijas, G & Biteau, J 2018, 'The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope', Astrophysical Journal, Supplement Series, VOL. 237, Numéro 2, 32. https://doi.org/10.3847/1538-4365/aacdf7

TY - JOUR

T1 - The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope

AU - Ackermann, M.

AU - Ajello, M.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Bellazzini, R.

AU - Bissaldi, E.

AU - Blandford, R. D.

AU - Bloom, E. D.

AU - Bonino, R.

AU - Bottacini, E.

AU - Brandt, T. J.

AU - Bregeon, J.

AU - Bruel, P.

AU - Buehler, R.

AU - Cameron, R. A.

AU - Caputo, R.

AU - Caraveo, P. A.

AU - Castro, D.

AU - Cavazzuti, E.

AU - Charles, E.

AU - Cheung, C. C.

AU - Chiaro, G.

AU - Ciprini, S.

AU - Cohen-Tanugi, J.

AU - Costantin, D.

AU - Cutini, S.

AU - D'Ammando, F.

AU - De Palma, F.

AU - Desai, A.

AU - Di Lalla, N.

AU - Di Mauro, M.

AU - Di Venere, L.

AU - Favuzzi, C.

AU - Finke, J.

AU - Franckowiak, A.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Giglietto, N.

AU - Giordano, F.

AU - Giroletti, M.

AU - Green, D.

AU - Grenier, I. A.

AU - Guillemot, L.

AU - Guiriec, S.

AU - Hays, E.

AU - Hewitt, J. W.

AU - Horan, D.

AU - Jóhannesson, G.

AU - Kensei, S.

AU - Kuss, M.

AU - Larsson, S.

AU - Latronico, L.

AU - Lemoine-Goumard, M.

AU - Li, J.

AU - Longo, F.

AU - Loparco, F.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Magill, J. D.

AU - Maldera, S.

AU - Manfreda, A.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Meyer, M.

AU - Mizuno, T.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Negro, M.

AU - Nuss, E.

AU - Omodei, N.

AU - Orienti, M.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Palatiello, M.

AU - Paliya, V. S.

AU - Paneque, D.

AU - Perkins, J. S.

AU - Persic, M.

AU - Pesce-Rollins, M.

AU - Piron, F.

AU - Porter, T. A.

AU - Principe, G.

AU - Rainò, S.

AU - Rando, R.

AU - Rani, B.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Reposeur, T.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Spandre, G.

AU - Spinelli, P.

AU - Suson, D. J.

AU - Tajima, H.

AU - Thayer, J. B.

AU - Tibaldo, L.

AU - Torres, D. F.

AU - Tosti, G.

AU - Valverde, J.

AU - Venters, T. M.

AU - Vogel, M.

AU - Wood, K.

AU - Wood, M.

AU - Zaharijas, G.

AU - Biteau, J.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - We present a search for spatial extension in high-latitude (|b| > 5°) sources in recent Fermi point source catalogs. The result is the Fermi High-Latitude Extended Sources Catalog, which provides source extensions (or upper limits thereof) and likelihood profiles for a suite of tested source morphologies. We find 24 extended sources, 19 of which were not previously characterized as extended. These include sources that are potentially associated with supernova remnants and star-forming regions. We also found extended γ-ray emission in the vicinity of the Cen A radio lobes and-at GeV energies for the first time-spatially coincident with the radio emission of the SNR CTA 1, as well as from the Crab Nebula. We also searched for halos around active galactic nuclei, which are predicted from electromagnetic cascades induced by the e+e? pairs that are deflected in intergalactic magnetic fields. These pairs are produced when ?-rays interact with background radiation fields. We do not find evidence for extension in individual sources or in stacked source samples. This enables us to place limits on the flux of the extended source components, which are then used to constrain the intergalactic magnetic field to be stronger than 3 × 10?16 G for a coherence length λ ≳ 10 kpc, even when conservative assumptions on the source duty cycle are made. This improves previous limits by several orders of magnitude.

AB - We present a search for spatial extension in high-latitude (|b| > 5°) sources in recent Fermi point source catalogs. The result is the Fermi High-Latitude Extended Sources Catalog, which provides source extensions (or upper limits thereof) and likelihood profiles for a suite of tested source morphologies. We find 24 extended sources, 19 of which were not previously characterized as extended. These include sources that are potentially associated with supernova remnants and star-forming regions. We also found extended γ-ray emission in the vicinity of the Cen A radio lobes and-at GeV energies for the first time-spatially coincident with the radio emission of the SNR CTA 1, as well as from the Crab Nebula. We also searched for halos around active galactic nuclei, which are predicted from electromagnetic cascades induced by the e+e? pairs that are deflected in intergalactic magnetic fields. These pairs are produced when ?-rays interact with background radiation fields. We do not find evidence for extension in individual sources or in stacked source samples. This enables us to place limits on the flux of the extended source components, which are then used to constrain the intergalactic magnetic field to be stronger than 3 × 10?16 G for a coherence length λ ≳ 10 kpc, even when conservative assumptions on the source duty cycle are made. This improves previous limits by several orders of magnitude.

KW - BL Lacertae objects: general

KW - ISM: H II Regions

KW - ISM: supernova remnants

KW - catalogs

KW - gamma rays: general

U2 - 10.3847/1538-4365/aacdf7

DO - 10.3847/1538-4365/aacdf7

M3 - Article

AN - SCOPUS:85052388013

SN - 0067-0049

VL - 237

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 32

ER -

The Search for Spatial Extension in High-latitude Sources Detected by the Fermi Large Area Telescope

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