Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars

F. Aharonian; A. G. Akhperjanian; J. A. Barrio; K. Bernlöhr; H. Bojahr; J. L. Contreras; J. Cortina; A. Daum; T. Deckers; S. Denninghoff; V. Fonseca; J. C. Gonzalez; G. Heinzelmann; M. Hemberger; G. Hermann; M. Heß; A. Heusler; W. Hofmann; H. Hohl; D. Horns; A. Ibarra; R. Kankanyan; M. Kestel; O. Kirstein; C. Köhler; A. Konopelko; H. Kornmeyer; D. Kranich; H. Krawczynski; H. Lampeitl; A. Lindner; E. Lorenz; N. Magnussen; H. Meyer; R. Mirzoyan; A. Moralejo; L. Padilla; M. Panter; D. Petry; R. Plaga; A. Plyasheshnikov; J. Prahl; G. Pühlhofer; G. Rauterberg; C. Renault; W. Rhode; A. Röhring; V. Sahakian; M. Samorski; D. Schmele; F. Schr̈der; W. Stamm; H. Völk; B. Wiebel-Sooth; C. Wiedner; M. Willmer; H. Wirth

Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars

F. Aharonian, A. G. Akhperjanian, J. A. Barrio, K. Bernlöhr, H. Bojahr, J. L. Contreras, J. Cortina, A. Daum, T. Deckers, S. Denninghoff, V. Fonseca, J. C. Gonzalez, G. Heinzelmann, M. Hemberger, G. Hermann, M. Heß, A. Heusler, W. Hofmann, H. Hohl, D. HornsA. Ibarra, R. Kankanyan, M. Kestel, O. Kirstein, C. Köhler, A. Konopelko, H. Kornmeyer, D. Kranich, H. Krawczynski, H. Lampeitl, A. Lindner, E. Lorenz, N. Magnussen, H. Meyer, R. Mirzoyan, A. Moralejo, L. Padilla, M. Panter, D. Petry, R. Plaga, A. Plyasheshnikov, J. Prahl, G. Pühlhofer, G. Rauterberg, C. Renault, W. Rhode, A. Röhring, V. Sahakian, M. Samorski, D. Schmele, F. Schr̈der, W. Stamm, H. Völk, B. Wiebel-Sooth, C. Wiedner, M. Willmer, H. Wirth

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

18 Scopus citations

Abstract

The Crab and Geminga pulsars were observed with the HEGRA stereoscopic IACT-System. A search for phase-resolved time structure of TeV gamma emission was carried out for both pulsars. No evidence for pulsed emission was observed. Geminga shows up as a TeV quiet object in our data. Upper limits were derived in units of the observed DC TeV Crab flux. The 3σ upper limit on DC TeV emission of Geminga is 13.0% of the Crab flux. Upper limits on pulsed emission were derived for the phase intervals which revealed pulsed emission in the EGRET 30 MeV - 10 GeV data. The 3σ upper limits on pulsed emission in these phase intervals are <2.3% and <7.2% of the Crab DC flux for the Crab and Geminga pulsars, respectively.

Original language	English
Pages (from-to)	913-921
Number of pages	9
Journal	Astronomy and Astrophysics
Volume	346
Issue number	3
State	Published - 1999

Keywords

Gamma rays: observations
Stars: pulsars: individual: Crab
Stars: pulsars: individual: Geminga

Cite this

Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., ... Wirth, H. (1999). Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars. Astronomy and Astrophysics, 346(3), 913-921.

@article{125b002296b549dcb4e0cf0b983f7532,

title = "Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars",

abstract = "The Crab and Geminga pulsars were observed with the HEGRA stereoscopic IACT-System. A search for phase-resolved time structure of TeV gamma emission was carried out for both pulsars. No evidence for pulsed emission was observed. Geminga shows up as a TeV quiet object in our data. Upper limits were derived in units of the observed DC TeV Crab flux. The 3σ upper limit on DC TeV emission of Geminga is 13.0% of the Crab flux. Upper limits on pulsed emission were derived for the phase intervals which revealed pulsed emission in the EGRET 30 MeV - 10 GeV data. The 3σ upper limits on pulsed emission in these phase intervals are <2.3% and <7.2% of the Crab DC flux for the Crab and Geminga pulsars, respectively.",

keywords = "Gamma rays: observations, Stars: pulsars: individual: Crab, Stars: pulsars: individual: Geminga",

author = "F. Aharonian and Akhperjanian, {A. G.} and Barrio, {J. A.} and K. Bernl{\"o}hr and H. Bojahr and Contreras, {J. L.} and J. Cortina and A. Daum and T. Deckers and S. Denninghoff and V. Fonseca and Gonzalez, {J. C.} and G. Heinzelmann and M. Hemberger and G. Hermann and M. He{\ss} and A. Heusler and W. Hofmann and H. Hohl and D. Horns and A. Ibarra and R. Kankanyan and M. Kestel and O. Kirstein and C. K{\"o}hler and A. Konopelko and H. Kornmeyer and D. Kranich and H. Krawczynski and H. Lampeitl and A. Lindner and E. Lorenz and N. Magnussen and H. Meyer and R. Mirzoyan and A. Moralejo and L. Padilla and M. Panter and D. Petry and R. Plaga and A. Plyasheshnikov and J. Prahl and G. P{\"u}hlhofer and G. Rauterberg and C. Renault and W. Rhode and A. R{\"o}hring and V. Sahakian and M. Samorski and D. Schmele and F. Sch{\"r}der and W. Stamm and H. V{\"o}lk and B. Wiebel-Sooth and C. Wiedner and M. Willmer and H. Wirth",

year = "1999",

language = "English",

volume = "346",

pages = "913--921",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

number = "3",

}

Aharonian, F, Akhperjanian, AG, Barrio, JA, Bernlöhr, K, Bojahr, H, Contreras, JL, Cortina, J, Daum, A, Deckers, T, Denninghoff, S, Fonseca, V, Gonzalez, JC, Heinzelmann, G, Hemberger, M, Hermann, G, Heß, M, Heusler, A, Hofmann, W, Hohl, H, Horns, D, Ibarra, A, Kankanyan, R, Kestel, M, Kirstein, O, Köhler, C, Konopelko, A, Kornmeyer, H, Kranich, D, Krawczynski, H, Lampeitl, H, Lindner, A, Lorenz, E, Magnussen, N, Meyer, H, Mirzoyan, R, Moralejo, A, Padilla, L, Panter, M, Petry, D, Plaga, R, Plyasheshnikov, A, Prahl, J, Pühlhofer, G, Rauterberg, G, Renault, C, Rhode, W, Röhring, A, Sahakian, V, Samorski, M, Schmele, D, Schr̈der, F, Stamm, W, Völk, H, Wiebel-Sooth, B, Wiedner, C, Willmer, M & Wirth, H 1999, 'Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars', Astronomy and Astrophysics, vol. 346, no. 3, pp. 913-921.

TY - JOUR

T1 - Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars

AU - Aharonian, F.

AU - Akhperjanian, A. G.

AU - Barrio, J. A.

AU - Bernlöhr, K.

AU - Bojahr, H.

AU - Contreras, J. L.

AU - Cortina, J.

AU - Daum, A.

AU - Deckers, T.

AU - Denninghoff, S.

AU - Fonseca, V.

AU - Gonzalez, J. C.

AU - Heinzelmann, G.

AU - Hemberger, M.

AU - Hermann, G.

AU - Heß, M.

AU - Heusler, A.

AU - Hofmann, W.

AU - Hohl, H.

AU - Horns, D.

AU - Ibarra, A.

AU - Kankanyan, R.

AU - Kestel, M.

AU - Kirstein, O.

AU - Köhler, C.

AU - Konopelko, A.

AU - Kornmeyer, H.

AU - Kranich, D.

AU - Krawczynski, H.

AU - Lampeitl, H.

AU - Lindner, A.

AU - Lorenz, E.

AU - Magnussen, N.

AU - Meyer, H.

AU - Mirzoyan, R.

AU - Moralejo, A.

AU - Padilla, L.

AU - Panter, M.

AU - Petry, D.

AU - Plaga, R.

AU - Plyasheshnikov, A.

AU - Prahl, J.

AU - Pühlhofer, G.

AU - Rauterberg, G.

AU - Renault, C.

AU - Rhode, W.

AU - Röhring, A.

AU - Sahakian, V.

AU - Samorski, M.

AU - Schmele, D.

AU - Schr̈der, F.

AU - Stamm, W.

AU - Völk, H.

AU - Wiebel-Sooth, B.

AU - Wiedner, C.

AU - Willmer, M.

AU - Wirth, H.

PY - 1999

Y1 - 1999

N2 - The Crab and Geminga pulsars were observed with the HEGRA stereoscopic IACT-System. A search for phase-resolved time structure of TeV gamma emission was carried out for both pulsars. No evidence for pulsed emission was observed. Geminga shows up as a TeV quiet object in our data. Upper limits were derived in units of the observed DC TeV Crab flux. The 3σ upper limit on DC TeV emission of Geminga is 13.0% of the Crab flux. Upper limits on pulsed emission were derived for the phase intervals which revealed pulsed emission in the EGRET 30 MeV - 10 GeV data. The 3σ upper limits on pulsed emission in these phase intervals are <2.3% and <7.2% of the Crab DC flux for the Crab and Geminga pulsars, respectively.

AB - The Crab and Geminga pulsars were observed with the HEGRA stereoscopic IACT-System. A search for phase-resolved time structure of TeV gamma emission was carried out for both pulsars. No evidence for pulsed emission was observed. Geminga shows up as a TeV quiet object in our data. Upper limits were derived in units of the observed DC TeV Crab flux. The 3σ upper limit on DC TeV emission of Geminga is 13.0% of the Crab flux. Upper limits on pulsed emission were derived for the phase intervals which revealed pulsed emission in the EGRET 30 MeV - 10 GeV data. The 3σ upper limits on pulsed emission in these phase intervals are <2.3% and <7.2% of the Crab DC flux for the Crab and Geminga pulsars, respectively.

KW - Gamma rays: observations

KW - Stars: pulsars: individual: Crab

KW - Stars: pulsars: individual: Geminga

UR - http://www.scopus.com/inward/record.url?scp=0001364270&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001364270

SN - 0004-6361

VL - 346

SP - 913

EP - 921

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars

Abstract

Keywords

Other files and links

Fingerprint

Cite this