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Long-term TeV and X-Ray Observations of the Gamma-Ray Binary HESS J0632+057

Aliu, E.; Archambault, S.; Aune, T.; Behera, B.; Beilicke, M.; Benbow, W.; Berger, K.; Bird, R.; Bouvier, A.; Buckley, J.H.; Bugaev, V.; Byrum, K.; Cerruti, M.; Chen, X.; Ciupik, L.; Connolly, M.P.; Cui, W.; Duke, C.; Dumm, J.; Errando, M.; Falcone, A.; Federici, S.; Feng, Q.; Finley, J.P.; Fortin, P.; Fortson, L.; Furniss, A.; Galante, N.; Gillanders, G.H.; Griffin, S.; Griffiths, S.T.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Hughes, G.; Humensky, T.B.; Kaaret, P.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Lang, M.J.; Madhavan, A.S.; Maier, G.; Majumdar, P.; McCann, A.; Moriarty, P.; Mukherjee, R.; Nieto, D.; O'Faoláin de Bhróithe, A.; Ong, R.A.; Otte, A.N.; Park, N.; Perkins, J.S.; Pohl, M.; Popkow, A.; Prokoph, H.; Quinn, J.; Ragan, K.; Rajotte, J.; Reyes, L.C.; Reynolds, P.T.; Richards, G.T.; Roache, E.; Rousselle, J.; Sembroski, G.H.; Sheidaei, F.; Skole, C.; Smith, A.W.; Staszak, D.; Stroh, M.; Telezhinsky, I.; Theiling, M.; Tucci, J.V.; Tyler, J.;...

Long-term TeV and X-Ray Observations of the Gamma-Ray Binary HESS J0632+057 Thumbnail


Authors

E. Aliu

S. Archambault

T. Aune

B. Behera

M. Beilicke

W. Benbow

K. Berger

R. Bird

A. Bouvier

J.H. Buckley

V. Bugaev

K. Byrum

M. Cerruti

X. Chen

L. Ciupik

M.P. Connolly

W. Cui

C. Duke

J. Dumm

M. Errando

A. Falcone

S. Federici

Q. Feng

J.P. Finley

P. Fortin

L. Fortson

A. Furniss

N. Galante

G.H. Gillanders

S. Griffin

S.T. Griffiths

J. Grube

G. Gyuk

D. Hanna

J. Holder

G. Hughes

T.B. Humensky

P. Kaaret

M. Kertzman

Y. Khassen

D. Kieda

H. Krawczynski

F. Krennrich

M.J. Lang

A.S. Madhavan

G. Maier

P. Majumdar

A. McCann

P. Moriarty

R. Mukherjee

D. Nieto

A. O'Faoláin de Bhróithe

R.A. Ong

A.N. Otte

N. Park

J.S. Perkins

M. Pohl

A. Popkow

H. Prokoph

J. Quinn

K. Ragan

J. Rajotte

L.C. Reyes

P.T. Reynolds

G.T. Richards

E. Roache

J. Rousselle

G.H. Sembroski

F. Sheidaei

C. Skole

A.W. Smith

D. Staszak

M. Stroh

I. Telezhinsky

M. Theiling

J.V. Tucci

J. Tyler

A. Varlotta

S. Vincent

S.P. Wakely

A. Weinstein

R. Welsing

D.A. Williams

A. Zajczyk

B. Zitzer

A. Abramowski

F. Aharonian

F. Ait Benkhali

A.G. Akhperjanian

E. Angüner

G. Anton

S. Balenderan

A. Balzer

A. Barnacka

Y. Becherini

J. Becker Tjus

K. Bernlöhr

E. Birsin

E. Bissaldi

J. Biteau

M. Böttcher

C. Boisson

J. Bolmont

P. Bordas

J. Brucker

F. Brun

P. Brun

T. Bulik

S. Carrigan

S. Casanova

P.M. Chadwick

R. Chalme-Calvet

R.C.G. Chaves

A. Cheesebrough

M. Chrétien

S. Colafrancesco

G. Cologna

J. Conrad

C. Couturier

M. Dalton

M.K. Daniel

I.D. Davids

B. Degrange

C. Deil

P. deWilt

H.J. Dickinson

A. Djannati-Ataï

W. Domainko

L. O'C. Drury

G. Dubus

K. Dutson

J. Dyks

M. Dyrda

T. Edwards

K. Egberts

P. Eger

P. Espigat

C. Farnier

S. Fegan

F. Feinstein

M.V. Fernandes

D. Fernandez

A. Fiasson

G. Fontaine

A. Förster

M. Füssling

M. Gajdus

Y.A. Gallant

T. Garrigoux

G. Giavitto

B. Giebels

J.F. Glicenstein

M.-H. Grondin

M. Grudzińska

S. Häffner

J. Hahn

J. Harris

G. Heinzelmann

G. Henri

G. Hermann

O. Hervet

A. Hillert

J.A. Hinton

W. Hofmann

P. Hofverberg

M. Holler

D. Horns

A. Jacholkowska

C. Jahn

M. Jamrozy

M. Janiak

F. Jankowsky

I. Jung

M.A. Kastendieck

K. Katarzyński

U. Katz

S. Kaufmann

B. Khélifi

M. Kieffer

S. Klepser

D. Klochkov

W. Kluźniak

T. Kneiske

D. Kolitzus

Nu Komin

K. Kosack

S. Krakau

F. Krayzel

P.P. Krüger

H. Laffon

G. Lamanna

J. Lefaucheur

A. Lemière

M. Lemoine-Goumard

J.-P. Lenain

D. Lennarz

T. Lohse

A. Lopatin

C.-C. Lu

V. Marandon

A. Marcowith

R. Marx

G. Maurin

N. Maxted

M. Mayer

T.J.L. McComb

J. Méhault

U. Menzler

M. Meyer

R. Moderski

M. Mohamed

E. Moulin

T. Murach

C.L. Naumann

M. de Naurois

J. Niemiec

S.J. Nolan

L. Oakes

S. Ohm

E. de Oña Wilhelmi

B. Opitz

M. Ostrowski

I. Oya

M. Panter

R.D. Parsons

M. Paz Arribas

N.W. Pekeur

G. Pelletier

J. Perez

P.-O. Petrucci

B. Peyaud

S. Pita

H. Poon

G. Pühlhofer

M. Punch

A. Quirrenbach

S. Raab

M. Raue

A. Reimer

O. Reimer

M. Renaud

R. de los Reyes

F. Rieger

L. Rob

C. Romoli

S. Rosier-Lees

G. Rowell

B. Rudak

C.B. Rulten

V. Sahakian

D.A. Sanchez

A. Santangelo

R. Schlickeiser

F. Schüssler

A. Schulz

U. Schwanke

S. Schwarzburg

S. Schwemmer

H. Sol

G. Spengler

F. Spies

Ł Stawarz

R. Steenkamp

C. Stegmann

F. Stinzing

K. Stycz

I. Sushch

A. Szostek

J.-P. Tavernet

T. Tavernier

A.M. Taylor

R. Terrier

M. Tluczykont

C. Trichard

K. Valerius

C. van Eldik

G. Vasileiadis

C. Venter

A. Viana

P. Vincent

H.J. Völk

F. Volpe

M. Vorster

S.J. Wagner

P. Wagner

M. Weidinger

Q. Weitzel

R. White

A. Wierzcholska

P. Willmann

A. Wörnlein

D. Wouters

M. Zacharias

A.A. Zdziarski

A. Zech

H.-S. Zechlin



Abstract

HESS J0632+057 is the only gamma-ray binary known so far whose position in the sky allows observations with ground-based observatories in both the northern and southern hemispheres. Here we report on long-term observations of HESS J0632+057 conducted with the Very Energetic Radiation Imaging Telescope Array System and High Energy Stereoscopic System Cherenkov telescopes and the X-ray satellite Swift, spanning a time range from 2004 to 2012 and covering most of the system's orbit. The very-high-energy (VHE) emission is found to be variable and is correlated with that at X-ray energies. An orbital period of $315 ^{+6}_{-4}$ days is derived from the X-ray data set, which is compatible with previous results, P = (321 ± 5) days. The VHE light curve shows a distinct maximum at orbital phases close to 0.3, or about 100 days after periastron passage, which coincides with the periodic enhancement of the X-ray emission. Furthermore, the analysis of the TeV data shows for the first time a statistically significant (>6.5σ) detection at orbital phases 0.6-0.9. The obtained gamma-ray and X-ray light curves and the correlation of the source emission at these two energy bands are discussed in the context of the recent ephemeris obtained for the system. Our results are compared to those reported for other gamma-ray binaries.

Citation

Aliu, E., Archambault, S., Aune, T., Behera, B., Beilicke, M., Benbow, W., …Zechlin, H. (2014). Long-term TeV and X-Ray Observations of the Gamma-Ray Binary HESS J0632+057. Astrophysical Journal, 780(2), Article 168. https://doi.org/10.1088/0004-637x/780/2/168

Journal Article Type Article
Publication Date Jan 10, 2014
Deposit Date May 29, 2014
Publicly Available Date Mar 28, 2024
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 780
Issue 2
Article Number 168
DOI https://doi.org/10.1088/0004-637x/780/2/168
Keywords Acceleration of particles, Binaries: general, Gamma rays: general.

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Copyright Statement
© 2013. The American Astronomical Society. All rights reserved.





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