Discovery of TeV gamma-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC

Moreno V; Vovk I; Arcaro C; Strzys M; Penil P; Somero A; Kuvezdic D; Satalecka K; Majumdar P; Carosi R; Colombo E; Rugliancich A; Delgado J; Colak SM; Dazzi F; Moralejo A; Will M; Kushida J; Palacio J; Lopez RJ; Rosillo M; Pedaletti G; Torres DF; Acciari VA; Mannheim K; Antonelli LA; Manganaro M; Hadasch D; Giammaria P; Hoang J; Lopez M; Makariev M; Zanin R; Noda K; Moretti E; Cumani P; Gaug M; Dorner D; Inoue S; Miranda JM; Lindfors E; Engels AA; Ansoldi S; Angelis A; Masuda S; Biland A; Teshima M; Einecke S; Herrera J; Kubo H; Galindo D; Nigro C; Contreras JL; Leone F; Lamastra A; Mariotti M; Persic M; Ninci D; Rhode W; Berti A; Baack D; Tavecchio F; Bhattacharyya W; Mazin D; Martinez M; Peresano M; Lelas D; Suric T; Snidaric I; Ramazani VF; Nilsson K; Temnikov P; Hahn A; Mirzoyan R; Ward JE; Prandini E; de Almeida UB; Wilhelmi EO; Fruck C; Lombardi S; Fattorini A; Iwamura Y; Cortina J; Banerjee B; Tsujimoto S; Paredes JM; Ferrara G; Garcia JR; Foffano L; Paneque D; Saito T; Puljak I; Schweizer T; Stamerra A; Neustroev V; Garczarczyk M; Paoletti R; Besenrieder J; Hrupec D; Hassan T; Molina E; Righi C; Fernandez-Barral A; Rico J; Fonseca MV; Sobczynska D; Doro M; Bernardini E; Acosta M; Ribo M; Sitarek J; Barrio JA; Vela P; Zanin R; MAGIC Collaboration; Lopez-Oramas A; Saha L; Torres-Alba N; Bangale P; Gonzalez JB; Zaric D; Niedzwiecki A; Minev M; Font L; Fidalgo D; Covino S; Vanzo G; Terzic T; Guberman D; Chatterjee A; Nogues L; Delfino M; Godinovic N; Maneva G; Gallozzi S; Blanch O; Ceribella G; Maraschi L; Elsaesser D; Bigongiari C; Dominguez A; Moroni PGP; Babic A; D'Elia V; Bonnoli G; Paiano S; Nishijima K; Pierro F; Colin P; Prester DD; Bednarek W; Ishio K; Maggio C; Longo F; Lotto B

Discovery of TeV gamma-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC

Moreno V; Vovk I; Arcaro C; Strzys M; Penil P; Somero A; Kuvezdic D; Satalecka K; Majumdar P; Carosi R; Colombo E; Rugliancich A; Delgado J; Colak SM; Dazzi F; Moralejo A; Will M; Kushida J; Palacio J; Lopez RJ; Rosillo M; Pedaletti G; Torres DF; Acciari VA; Mannheim K; Antonelli LA; Manganaro M; Hadasch D; Giammaria P; Hoang J; Lopez M; Makariev M; Zanin R; Noda K; Moretti E; Cumani P; Gaug M; Dorner D; Inoue S; Miranda JM; Lindfors E; Engels AA; Ansoldi S; Angelis A; Masuda S; Biland A; Teshima M; Einecke S; Herrera J; Kubo H; Galindo D; Nigro C; Contreras JL; Leone F; Lamastra A; Mariotti M; Persic M; Ninci D; Rhode W; Berti A; Baack D; Tavecchio F; Bhattacharyya W; Mazin D; Martinez M; Peresano M; Lelas D; Suric T; Snidaric I; Ramazani VF; Nilsson K; Temnikov P; Hahn A; Mirzoyan R; Ward JE; Prandini E; de Almeida UB; Wilhelmi EO; Fruck C; Lombardi S; Fattorini A; Iwamura Y; Cortina J; Banerjee B; Tsujimoto S; Paredes JM; Ferrara G; Garcia JR; Foffano L; Paneque D; Saito T; Puljak I; Schweizer T; Stamerra A; Neustroev V; Garczarczyk M; Paoletti R; Besenrieder J; Hrupec D; Hassan T; Molina E; Righi C; Fernandez-Barral A; Rico J; Fonseca MV; Sobczynska D; Doro M; Bernardini E; Acosta M; Ribo M; Sitarek J; Barrio JA; Vela P; Zanin R; MAGIC Collaboration; Lopez-Oramas A; Saha L; Torres-Alba N; Bangale P; Gonzalez JB; Zaric D; Niedzwiecki A; Minev M; Font L; Fidalgo D; Covino S; Vanzo G; Terzic T; Guberman D; Chatterjee A; Nogues L; Delfino M; Godinovic N; Maneva G; Gallozzi S; Blanch O; Ceribella G; Maraschi L; Elsaesser D; Bigongiari C; Dominguez A; Moroni PGP; Babic A; D'Elia V; Bonnoli G; Paiano S; Nishijima K; Pierro F; Colin P; Prester DD; Bednarek W; Ishio K; Maggio C; Longo F; Lotto B

Discovery of TeV gamma-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC

Moreno V

Vovk I

Arcaro C

Strzys M

Penil P

Somero A

Kuvezdic D

Satalecka K

Majumdar P

Carosi R

Colombo E

Rugliancich A

Delgado J

Colak SM

Dazzi F

Moralejo A

Will M

Kushida J

Palacio J

Lopez RJ

Rosillo M

Pedaletti G

Torres DF

Acciari VA

Mannheim K

Antonelli LA

Manganaro M

Hadasch D

Giammaria P

Hoang J

Lopez M

Makariev M

Zanin R

Noda K

Moretti E

Cumani P

Gaug M

Dorner D

Inoue S

Miranda JM

Lindfors E

Engels AA

Ansoldi S

Angelis A

Masuda S

Biland A

Teshima M

Einecke S

Herrera J

Kubo H

Galindo D

Nigro C

Contreras JL

Leone F

Lamastra A

Mariotti M

Persic M

Ninci D

Rhode W

Berti A

Baack D

Tavecchio F

Bhattacharyya W

Mazin D

Martinez M

Peresano M

Lelas D

Suric T

Snidaric I

Ramazani VF

Nilsson K

Temnikov P

Hahn A

Mirzoyan R

Ward JE

Prandini E

de Almeida UB

Wilhelmi EO

Fruck C

Lombardi S

Fattorini A

Iwamura Y

Cortina J

Banerjee B

Tsujimoto S

Paredes JM

Ferrara G

Garcia JR

Foffano L

Paneque D

Saito T

Puljak I

Schweizer T

Stamerra A

Neustroev V

Garczarczyk M

Paoletti R

Besenrieder J

Hrupec D

Hassan T

Molina E

Righi C

Fernandez-Barral A

Rico J

Fonseca MV

Sobczynska D

Doro M

Bernardini E

Acosta M

Ribo M

Sitarek J

Barrio JA

Vela P

Zanin R; MAGIC Collaboration

Lopez-Oramas A

Saha L

Torres-Alba N

Bangale P

Gonzalez JB

Zaric D

Niedzwiecki A

Minev M

Font L

Fidalgo D

Covino S

Vanzo G

Terzic T

Guberman D

Chatterjee A

Nogues L

Delfino M

Godinovic N

Maneva G

Gallozzi S

Blanch O

Ceribella G

Maraschi L

Elsaesser D

Bigongiari C

Dominguez A

Moroni PGP

Babic A

D'Elia V

Bonnoli G

Paiano S

Nishijima K

Pierro F

Colin P

Prester DD

Bednarek W

Ishio K

Maggio C

Longo F

Lotto B

Katso/Avaa

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OXFORD UNIV PRESS

doi:10.1093/mnras/sty3387

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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042824728

Tiivistelmä

SNR G24.7+0.6 is a 9.5 kyrs radio and gamma-ray supernova remnant evolving in a dense medium. In the GeV regime, SNR G24.7+0.6 (3FHL J1834.1-0706e/FGFS J1834.1-0706) shows a hard spectral index (Gamma similar to 2) up to 200 GeV, which makes it a good candidate to be observed with Cherenkov telescopes such as MAGIC. We observed the field of view of SNR G24.7+0.6 with the MAGIC telescopes for a total of 31 h. We detect very high-energy gamma-ray emission from an extended source located 0.34 degrees away from the centre of the radio SNR. The new source, named MAGIC J1835-069 is detected up to 5 TeV, and its spectrum is well-represented by a power-law function with spectral index of 2.74 +/- 0.08. The complexity of the region makes the identification of the origin of the very high-energy emission difficult; however, the spectral agreement with the LAT source and overlapping position at less than 1.5 sigma point to a common origin. We analysed 8 yr of Fermi-LAT data to extend the spectrum of the source down to 60 MeV. Fermi-LAT and MAGIC spectra overlap within errors and the global broad-band spectrum is described by a power law with exponential cut-off at 1.9 +/- 0.5 TeV. The detected gamma-ray emission can be interpreted as the results of proton-proton interaction between the supernova and the CO-rich surrounding.

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