EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303

S. Archambault; A. Archer; T. Aune; A. Barnacka; W. Benbow; R. Bird; M. Buchovecky; J. H. Buckley; V. Bugaev; K. Byrum; J. V. Cardenzana; M. Cerruti; X. Chen; L. Ciupik; E. Collins-Hughes; M. P. Connolly; W. Cui; H. J. Dickinson; J. Dumm; J. D. Eisch; A. Falcone; Q. Feng; J. P. Finley; H. Fleischhack; A. Flinders; P. Fortin; L. Fortson; A. Furniss; G. H. Gillanders; S. Griffin; J. Grube; G. Gyuk; M. Hütten; N. Hakansson; D. Hanna; J. Holder; T. B. Humensky; C. A. Johnson; P. Kaaret; P. Kar; N. Kelley-Hoskins; M. Kertzman; Y. Khassen; D. Kieda; M. Krause; F. Krennrich; S. Kumar; M. J. Lang; G. Maier; S. McArthur; A. McCann; K. Meagher; J. Millis; P. Moriarty; R. Mukherjee; D. Nieto; S. O'Brien; A. O Faoláin De Bhróithe; R. A. Ong; A. N. Otte; D. Pandel; N. Park; V. Pelassa; M. Pohl; A. Popkow; E. Pueschel; J. Quinn; K. Ragan; P. T. Reynolds; G. T. Richards; E. Roache; J. Rousselle; C. Rulten; M. Santander; G. H. Sembroski; K. Shahinyan; A. W. Smith; D. Staszak; I. Telezhinsky; J. V. Tucci; J. Tyler; S. Vincent; S. P. Wakely; O. M. Weiner; A. Weinstein; A. Wilhelm; D. A. Williams; B. Zitzer

doi:10.3847/2041-8205/817/1/L7

EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303

S. Archambault, A. Archer, T. Aune, A. Barnacka, W. Benbow, R. Bird, M. Buchovecky, J. H. Buckley, V. Bugaev, K. Byrum, J. V. Cardenzana, M. Cerruti, X. Chen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, H. J. Dickinson, J. Dumm, J. D. EischA. Falcone, Q. Feng, J. P. Finley, H. Fleischhack, A. Flinders, P. Fortin, L. Fortson, A. Furniss, G. H. Gillanders, S. Griffin, J. Grube, G. Gyuk, M. Hütten, N. Hakansson, D. Hanna, J. Holder, T. B. Humensky, C. A. Johnson, P. Kaaret, P. Kar, N. Kelley-Hoskins, M. Kertzman, Y. Khassen, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, S. McArthur, A. McCann, K. Meagher, J. Millis, P. Moriarty, R. Mukherjee, D. Nieto, S. O'Brien, A. O Faoláin De Bhróithe, R. A. Ong, A. N. Otte, D. Pandel, N. Park, V. Pelassa, M. Pohl, A. Popkow, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, G. T. Richards, E. Roache, J. Rousselle, C. Rulten, M. Santander, G. H. Sembroski, K. Shahinyan, A. W. Smith, D. Staszak, I. Telezhinsky, J. V. Tucci, J. Tyler, S. Vincent, S. P. Wakely, O. M. Weiner, A. Weinstein, A. Wilhelm, D. A. Williams, B. Zitzer

Physics and Astronomy (Twin Cities)

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

21 Scopus citations

Abstract

The TeV binary system LS I +61 303 is known for its regular, non-thermal emission pattern that traces the orbital period of the compact object in its 26.5 day orbit around its B0 Ve star companion. The system typically presents elevated TeV emission around apastron passage with flux levels between 5% and 15% of the steady flux from the Crab Nebula (>300 GeV). In this article, VERITAS observations of LS I +61 303 taken in late 2014 are presented, during which bright TeV flares around apastron at flux levels peaking above 30% of the Crab Nebula flux were detected. This is the brightest such activity from this source ever seen in the TeV regime. The strong outbursts have rise and fall times of less than a day. The short timescale of the flares, in conjunction with the observation of 10 TeV photons from LS I +61 303 during the flares, provides constraints on the properties of the accelerator in the source.

Original language	English (US)
Article number	L7
Journal	Astrophysical Journal Letters
Volume	817
Issue number	1
DOIs	https://doi.org/10.3847/2041-8205/817/1/L7
State	Published - Jan 20 2016

Bibliographical note

Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved..

Keywords

X-rays: binaries
binaries: general
gamma-rays: general
stars: individual (LS I +61303, VER J0240+612)

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Archambault, S., Archer, A., Aune, T., Barnacka, A., Benbow, W., Bird, R., Buchovecky, M., Buckley, J. H., Bugaev, V., Byrum, K., Cardenzana, J. V., Cerruti, M., Chen, X., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Cui, W., Dickinson, H. J., Dumm, J., ... Zitzer, B. (2016). EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303. Astrophysical Journal Letters, 817(1), Article L7. https://doi.org/10.3847/2041-8205/817/1/L7

Archambault, S, Archer, A, Aune, T, Barnacka, A, Benbow, W, Bird, R, Buchovecky, M, Buckley, JH, Bugaev, V, Byrum, K, Cardenzana, JV, Cerruti, M, Chen, X, Ciupik, L, Collins-Hughes, E, Connolly, MP, Cui, W, Dickinson, HJ, Dumm, J, Eisch, JD, Falcone, A, Feng, Q, Finley, JP, Fleischhack, H, Flinders, A, Fortin, P, Fortson, L, Furniss, A, Gillanders, GH, Griffin, S, Grube, J, Gyuk, G, Hütten, M, Hakansson, N, Hanna, D, Holder, J, Humensky, TB, Johnson, CA, Kaaret, P, Kar, P, Kelley-Hoskins, N, Kertzman, M, Khassen, Y, Kieda, D, Krause, M, Krennrich, F, Kumar, S, Lang, MJ, Maier, G, McArthur, S, McCann, A, Meagher, K, Millis, J, Moriarty, P, Mukherjee, R, Nieto, D, O'Brien, S, Bhróithe, AOFD, Ong, RA, Otte, AN, Pandel, D, Park, N, Pelassa, V, Pohl, M, Popkow, A, Pueschel, E, Quinn, J, Ragan, K, Reynolds, PT, Richards, GT, Roache, E, Rousselle, J, Rulten, C, Santander, M, Sembroski, GH, Shahinyan, K, Smith, AW, Staszak, D, Telezhinsky, I, Tucci, JV, Tyler, J, Vincent, S, Wakely, SP, Weiner, OM, Weinstein, A, Wilhelm, A, Williams, DA & Zitzer, B 2016, 'EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303', Astrophysical Journal Letters, vol. 817, no. 1, L7. https://doi.org/10.3847/2041-8205/817/1/L7

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abstract = "The TeV binary system LS I +61 303 is known for its regular, non-thermal emission pattern that traces the orbital period of the compact object in its 26.5 day orbit around its B0 Ve star companion. The system typically presents elevated TeV emission around apastron passage with flux levels between 5% and 15% of the steady flux from the Crab Nebula (>300 GeV). In this article, VERITAS observations of LS I +61 303 taken in late 2014 are presented, during which bright TeV flares around apastron at flux levels peaking above 30% of the Crab Nebula flux were detected. This is the brightest such activity from this source ever seen in the TeV regime. The strong outbursts have rise and fall times of less than a day. The short timescale of the flares, in conjunction with the observation of 10 TeV photons from LS I +61 303 during the flares, provides constraints on the properties of the accelerator in the source.",

keywords = "X-rays: binaries, binaries: general, gamma-rays: general, stars: individual (LS I +61303, VER J0240+612)",

author = "S. Archambault and A. Archer and T. Aune and A. Barnacka and W. Benbow and R. Bird and M. Buchovecky and Buckley, {J. H.} and V. Bugaev and K. Byrum and Cardenzana, {J. V.} and M. Cerruti and X. Chen and L. Ciupik and E. Collins-Hughes and Connolly, {M. P.} and W. Cui and Dickinson, {H. J.} and J. Dumm and Eisch, {J. D.} and A. Falcone and Q. Feng and Finley, {J. P.} and H. Fleischhack and A. Flinders and P. Fortin and L. Fortson and A. Furniss and Gillanders, {G. H.} and S. Griffin and J. Grube and G. Gyuk and M. H{\"u}tten and N. Hakansson and D. Hanna and J. Holder and Humensky, {T. B.} and Johnson, {C. A.} and P. Kaaret and P. Kar and N. Kelley-Hoskins and M. Kertzman and Y. Khassen and D. Kieda and M. Krause and F. Krennrich and S. Kumar and Lang, {M. J.} and G. Maier and S. McArthur and A. McCann and K. Meagher and J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and S. O'Brien and Bhr{\'o}ithe, {A. O Faol{\'a}in De} and Ong, {R. A.} and Otte, {A. N.} and D. Pandel and N. Park and V. Pelassa and M. Pohl and A. Popkow and E. Pueschel and J. Quinn and K. Ragan and Reynolds, {P. T.} and Richards, {G. T.} and E. Roache and J. Rousselle and C. Rulten and M. Santander and Sembroski, {G. H.} and K. Shahinyan and Smith, {A. W.} and D. Staszak and I. Telezhinsky and Tucci, {J. V.} and J. Tyler and S. Vincent and Wakely, {S. P.} and Weiner, {O. M.} and A. Weinstein and A. Wilhelm and Williams, {D. A.} and B. Zitzer",

year = "2016",

month = jan,

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doi = "10.3847/2041-8205/817/1/L7",

language = "English (US)",

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journal = "Astrophysical Journal Letters",

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TY - JOUR

T1 - EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303

AU - Archambault, S.

AU - Archer, A.

AU - Aune, T.

AU - Barnacka, A.

AU - Benbow, W.

AU - Bird, R.

AU - Buchovecky, M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cardenzana, J. V.

AU - Cerruti, M.

AU - Chen, X.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Cui, W.

AU - Dickinson, H. J.

AU - Dumm, J.

AU - Eisch, J. D.

AU - Falcone, A.

AU - Feng, Q.

AU - Finley, J. P.

AU - Fleischhack, H.

AU - Flinders, A.

AU - Fortin, P.

AU - Fortson, L.

AU - Furniss, A.

AU - Gillanders, G. H.

AU - Griffin, S.

AU - Grube, J.

AU - Gyuk, G.

AU - Hütten, M.

AU - Hakansson, N.

AU - Hanna, D.

AU - Holder, J.

AU - Humensky, T. B.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kar, P.

AU - Kelley-Hoskins, N.

AU - Kertzman, M.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krause, M.

AU - Krennrich, F.

AU - Kumar, S.

AU - Lang, M. J.

AU - Maier, G.

AU - McArthur, S.

AU - McCann, A.

AU - Meagher, K.

AU - Millis, J.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nieto, D.

AU - O'Brien, S.

AU - Bhróithe, A. O Faoláin De

AU - Ong, R. A.

AU - Otte, A. N.

AU - Pandel, D.

AU - Park, N.

AU - Pelassa, V.

AU - Pohl, M.

AU - Popkow, A.

AU - Pueschel, E.

AU - Quinn, J.

AU - Ragan, K.

AU - Reynolds, P. T.

AU - Richards, G. T.

AU - Roache, E.

AU - Rousselle, J.

AU - Rulten, C.

AU - Santander, M.

AU - Sembroski, G. H.

AU - Shahinyan, K.

AU - Smith, A. W.

AU - Staszak, D.

AU - Telezhinsky, I.

AU - Tucci, J. V.

AU - Tyler, J.

AU - Vincent, S.

AU - Wakely, S. P.

AU - Weiner, O. M.

AU - Weinstein, A.

AU - Wilhelm, A.

AU - Williams, D. A.

AU - Zitzer, B.

PY - 2016/1/20

Y1 - 2016/1/20

N2 - The TeV binary system LS I +61 303 is known for its regular, non-thermal emission pattern that traces the orbital period of the compact object in its 26.5 day orbit around its B0 Ve star companion. The system typically presents elevated TeV emission around apastron passage with flux levels between 5% and 15% of the steady flux from the Crab Nebula (>300 GeV). In this article, VERITAS observations of LS I +61 303 taken in late 2014 are presented, during which bright TeV flares around apastron at flux levels peaking above 30% of the Crab Nebula flux were detected. This is the brightest such activity from this source ever seen in the TeV regime. The strong outbursts have rise and fall times of less than a day. The short timescale of the flares, in conjunction with the observation of 10 TeV photons from LS I +61 303 during the flares, provides constraints on the properties of the accelerator in the source.

AB - The TeV binary system LS I +61 303 is known for its regular, non-thermal emission pattern that traces the orbital period of the compact object in its 26.5 day orbit around its B0 Ve star companion. The system typically presents elevated TeV emission around apastron passage with flux levels between 5% and 15% of the steady flux from the Crab Nebula (>300 GeV). In this article, VERITAS observations of LS I +61 303 taken in late 2014 are presented, during which bright TeV flares around apastron at flux levels peaking above 30% of the Crab Nebula flux were detected. This is the brightest such activity from this source ever seen in the TeV regime. The strong outbursts have rise and fall times of less than a day. The short timescale of the flares, in conjunction with the observation of 10 TeV photons from LS I +61 303 during the flares, provides constraints on the properties of the accelerator in the source.

KW - X-rays: binaries

KW - binaries: general

KW - gamma-rays: general

KW - stars: individual (LS I +61303, VER J0240+612)

UR - http://www.scopus.com/inward/record.url?scp=84955309352&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955309352&partnerID=8YFLogxK

U2 - 10.3847/2041-8205/817/1/L7

DO - 10.3847/2041-8205/817/1/L7

M3 - Article

AN - SCOPUS:84955309352

SN - 2041-8205

VL - 817

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L7

ER -

EXCEPTIONALLY BRIGHT TEV FLARES from the BINARY LS i +61303

Abstract

Bibliographical note

Keywords

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