Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources

S. Abdollahi; F. Acero; M. Ackermann; L. Baldini; J. Ballet; G. Barbiellini; D. Bastieri; R. Bellazzini; B. Berenji; A. Berretta; E. Bissaldi; R. D. Blandford; R. Bonino; P. Bruel; S. Buson; R. A. Cameron; R. Caputo; P. A. Caraveo; D. Castro; G. Chiaro; N. Cibrario; S. Ciprini; J. Coronado-Blázquez; M. Crnogorcevic; S. Cutini; F. D'Ammando; S. De Gaetano; N. Di Lalla; F. Dirirsa; L. Di Venere; A. Domínguez; S. J. Fegan; A. Fiori; H. Fleischhack; A. Franckowiak; Y. Fukazawa; P. Fusco; V. Gammaldi; F. Gargano; D. Gasparrini; F. Giacchino; N. Giglietto; F. Giordano; M. Giroletti; T. Glanzman; D. Green; I. A. Grenier; M. H. Grondin; S. Guiriec; M. Gustafsson; A. K. Harding; E. Hays; J. W. Hewitt; D. Horan; X. Hou; G. Jóhannesson; T. Kayanoki; M. Kerr; M. Kuss; S. Larsson; L. Latronico; M. Lemoine-Goumard; J. Li; F. Longo; F. Loparco; P. Lubrano; S. Maldera; D. Malyshev; A. Manfreda; G. Martí-Devesa; M. N. Mazziotta; I. Mereu; P. F. Michelson; N. Mirabal; W. Mitthumsiri; T. Mizuno; M. E. Monzani; A. Morselli; I. V. Moskalenko; E. Nuss; N. Omodei; M. Orienti; E. Orlando; J. F. Ormes; D. Paneque; Z. Pei; M. Persic; M. Pesce-Rollins; R. Pillera; H. Poon; T. A. Porter; G. Principe; S. Rainò; R. Rando; B. Rani; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; T. Reposeur; M. Sánchez-Conde; P. M. Saz Parkinson; L. Scotton; D. Serini; C. Sgrò; E. J. Siskind; G. Spandre; P. Spinelli; K. Sueoka; D. J. Suson; H. Tajima; D. Tak; J. B. Thayer; D. F. Torres; E. Troja; J. Valverde; Z. Wadiasingh; K. Wood; G. Zaharijas

doi:10.3847/1538-4357/ac704f

Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources

S. Abdollahi, F. Acero, M. Ackermann, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, R. Bellazzini, B. Berenji, A. Berretta, E. Bissaldi, R. D. Blandford, R. Bonino, P. Bruel, S. Buson, R. A. Cameron, R. Caputo, P. A. Caraveo, D. Castro, G. ChiaroN. Cibrario, S. Ciprini, J. Coronado-Blázquez, M. Crnogorcevic, S. Cutini, F. D'Ammando, S. De Gaetano, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Domínguez, S. J. Fegan, A. Fiori, H. Fleischhack, A. Franckowiak, Y. Fukazawa, P. Fusco, V. Gammaldi, F. Gargano, D. Gasparrini, F. Giacchino, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, D. Green, I. A. Grenier, M. H. Grondin, S. Guiriec, M. Gustafsson, A. K. Harding, E. Hays, J. W. Hewitt, D. Horan, X. Hou, G. Jóhannesson, T. Kayanoki, M. Kerr, M. Kuss, S. Larsson, L. Latronico, M. Lemoine-Goumard, J. Li, F. Longo, F. Loparco, P. Lubrano, S. Maldera, D. Malyshev, A. Manfreda, G. Martí-Devesa, M. N. Mazziotta, I. Mereu, P. F. Michelson, N. Mirabal, W. Mitthumsiri, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, E. Nuss, N. Omodei, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, Z. Pei, M. Persic, M. Pesce-Rollins, R. Pillera, H. Poon, T. A. Porter, G. Principe, S. Rainò, R. Rando, B. Rani, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, M. Sánchez-Conde, P. M. Saz Parkinson, L. Scotton, D. Serini, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, K. Sueoka, D. J. Suson, H. Tajima, D. Tak, J. B. Thayer, D. F. Torres, E. Troja, J. Valverde, Z. Wadiasingh, K. Wood, G. Zaharijas

Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton-proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites.

Original language	English
Article number	204
Journal	Astrophysical Journal
Volume	933
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ac704f
Publication status	Published - 1 Jul 2022

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-4357/ac704f

Cite this

Abdollahi, S., Acero, F., Ackermann, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Berenji, B., Berretta, A., Bissaldi, E., Blandford, R. D., Bonino, R., Bruel, P., Buson, S., Cameron, R. A., Caputo, R., Caraveo, P. A., Castro, D., ... Zaharijas, G. (2022). Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources. Astrophysical Journal, 933(2), Article 204. https://doi.org/10.3847/1538-4357/ac704f

@article{b21e5a2c1bd748d48d24b440d5ca4269,

title = "Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources",

abstract = "Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton-proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites.",

author = "S. Abdollahi and F. Acero and M. Ackermann and L. Baldini and J. Ballet and G. Barbiellini and D. Bastieri and R. Bellazzini and B. Berenji and A. Berretta and E. Bissaldi and Blandford, {R. D.} and R. Bonino and P. Bruel and S. Buson and Cameron, {R. A.} and R. Caputo and Caraveo, {P. A.} and D. Castro and G. Chiaro and N. Cibrario and S. Ciprini and J. Coronado-Bl{\'a}zquez and M. Crnogorcevic and S. Cutini and F. D'Ammando and {De Gaetano}, S. and {Di Lalla}, N. and F. Dirirsa and {Di Venere}, L. and A. Dom{\'i}nguez and Fegan, {S. J.} and A. Fiori and H. Fleischhack and A. Franckowiak and Y. Fukazawa and P. Fusco and V. Gammaldi and F. Gargano and D. Gasparrini and F. Giacchino and N. Giglietto and F. Giordano and M. Giroletti and T. Glanzman and D. Green and Grenier, {I. A.} and Grondin, {M. H.} and S. Guiriec and M. Gustafsson and Harding, {A. K.} and E. Hays and Hewitt, {J. W.} and D. Horan and X. Hou and G. J{\'o}hannesson and T. Kayanoki and M. Kerr and M. Kuss and S. Larsson and L. Latronico and M. Lemoine-Goumard and J. Li and F. Longo and F. Loparco and P. Lubrano and S. Maldera and D. Malyshev and A. Manfreda and G. Mart{\'i}-Devesa and Mazziotta, {M. N.} and I. Mereu and Michelson, {P. F.} and N. Mirabal and W. Mitthumsiri and T. Mizuno and Monzani, {M. E.} and A. Morselli and Moskalenko, {I. V.} and E. Nuss and N. Omodei and M. Orienti and E. Orlando and Ormes, {J. F.} and D. Paneque and Z. Pei and M. Persic and M. Pesce-Rollins and R. Pillera and H. Poon and Porter, {T. A.} and G. Principe and S. Rain{\`o} and R. Rando and B. Rani and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and T. Reposeur and M. S{\'a}nchez-Conde and {Saz Parkinson}, {P. M.} and L. Scotton and D. Serini and C. Sgr{\`o} and Siskind, {E. J.} and G. Spandre and P. Spinelli and K. Sueoka and Suson, {D. J.} and H. Tajima and D. Tak and Thayer, {J. B.} and Torres, {D. F.} and E. Troja and J. Valverde and Z. Wadiasingh and K. Wood and G. Zaharijas",

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = jul,

day = "1",

doi = "10.3847/1538-4357/ac704f",

language = "English",

volume = "933",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Abdollahi, S, Acero, F, Ackermann, M, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Bellazzini, R, Berenji, B, Berretta, A, Bissaldi, E, Blandford, RD, Bonino, R, Bruel, P, Buson, S, Cameron, RA, Caputo, R, Caraveo, PA, Castro, D, Chiaro, G, Cibrario, N, Ciprini, S, Coronado-Blázquez, J, Crnogorcevic, M, Cutini, S, D'Ammando, F, De Gaetano, S, Di Lalla, N, Dirirsa, F, Di Venere, L, Domínguez, A, Fegan, SJ, Fiori, A, Fleischhack, H, Franckowiak, A, Fukazawa, Y, Fusco, P, Gammaldi, V, Gargano, F, Gasparrini, D, Giacchino, F, Giglietto, N, Giordano, F, Giroletti, M, Glanzman, T, Green, D, Grenier, IA, Grondin, MH, Guiriec, S, Gustafsson, M, Harding, AK, Hays, E, Hewitt, JW, Horan, D, Hou, X, Jóhannesson, G, Kayanoki, T, Kerr, M, Kuss, M, Larsson, S, Latronico, L, Lemoine-Goumard, M, Li, J, Longo, F, Loparco, F, Lubrano, P, Maldera, S, Malyshev, D, Manfreda, A, Martí-Devesa, G, Mazziotta, MN, Mereu, I, Michelson, PF, Mirabal, N, Mitthumsiri, W, Mizuno, T, Monzani, ME, Morselli, A, Moskalenko, IV, Nuss, E, Omodei, N, Orienti, M, Orlando, E, Ormes, JF, Paneque, D, Pei, Z, Persic, M, Pesce-Rollins, M, Pillera, R, Poon, H, Porter, TA, Principe, G, Rainò, S, Rando, R, Rani, B, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Reposeur, T, Sánchez-Conde, M, Saz Parkinson, PM, Scotton, L, Serini, D, Sgrò, C, Siskind, EJ, Spandre, G, Spinelli, P, Sueoka, K, Suson, DJ, Tajima, H, Tak, D, Thayer, JB, Torres, DF, Troja, E, Valverde, J, Wadiasingh, Z, Wood, K & Zaharijas, G 2022, 'Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources', Astrophysical Journal, vol. 933, no. 2, 204. https://doi.org/10.3847/1538-4357/ac704f

TY - JOUR

T1 - Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources

AU - Abdollahi, S.

AU - Acero, F.

AU - Ackermann, M.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Bellazzini, R.

AU - Berenji, B.

AU - Berretta, A.

AU - Bissaldi, E.

AU - Blandford, R. D.

AU - Bonino, R.

AU - Bruel, P.

AU - Buson, S.

AU - Cameron, R. A.

AU - Caputo, R.

AU - Caraveo, P. A.

AU - Castro, D.

AU - Chiaro, G.

AU - Cibrario, N.

AU - Ciprini, S.

AU - Coronado-Blázquez, J.

AU - Crnogorcevic, M.

AU - Cutini, S.

AU - D'Ammando, F.

AU - De Gaetano, S.

AU - Di Lalla, N.

AU - Dirirsa, F.

AU - Di Venere, L.

AU - Domínguez, A.

AU - Fegan, S. J.

AU - Fiori, A.

AU - Fleischhack, H.

AU - Franckowiak, A.

AU - Fukazawa, Y.

AU - Fusco, P.

AU - Gammaldi, V.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Giacchino, F.

AU - Giglietto, N.

AU - Giordano, F.

AU - Giroletti, M.

AU - Glanzman, T.

AU - Green, D.

AU - Grenier, I. A.

AU - Grondin, M. H.

AU - Guiriec, S.

AU - Gustafsson, M.

AU - Harding, A. K.

AU - Hays, E.

AU - Hewitt, J. W.

AU - Horan, D.

AU - Hou, X.

AU - Jóhannesson, G.

AU - Kayanoki, T.

AU - Kerr, M.

AU - Kuss, M.

AU - Larsson, S.

AU - Latronico, L.

AU - Lemoine-Goumard, M.

AU - Li, J.

AU - Longo, F.

AU - Loparco, F.

AU - Lubrano, P.

AU - Maldera, S.

AU - Malyshev, D.

AU - Manfreda, A.

AU - Martí-Devesa, G.

AU - Mazziotta, M. N.

AU - Mereu, I.

AU - Michelson, P. F.

AU - Mirabal, N.

AU - Mitthumsiri, W.

AU - Mizuno, T.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Nuss, E.

AU - Omodei, N.

AU - Orienti, M.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Paneque, D.

AU - Pei, Z.

AU - Persic, M.

AU - Pesce-Rollins, M.

AU - Pillera, R.

AU - Poon, H.

AU - Porter, T. A.

AU - Principe, G.

AU - Rainò, S.

AU - Rando, R.

AU - Rani, B.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Reposeur, T.

AU - Sánchez-Conde, M.

AU - Saz Parkinson, P. M.

AU - Scotton, L.

AU - Serini, D.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Spandre, G.

AU - Spinelli, P.

AU - Sueoka, K.

AU - Suson, D. J.

AU - Tajima, H.

AU - Tak, D.

AU - Thayer, J. B.

AU - Torres, D. F.

AU - Troja, E.

AU - Valverde, J.

AU - Wadiasingh, Z.

AU - Wood, K.

AU - Zaharijas, G.

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton-proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites.

AB - Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton-proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites.

UR - http://www.scopus.com/inward/record.url?scp=85135274646&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/ac704f

DO - 10.3847/1538-4357/ac704f

M3 - Article

AN - SCOPUS:85135274646

SN - 0004-637X

VL - 933

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 204

ER -

Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this