Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/37561
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | The unidentified TeV source (TeV J2032+4130) and surrounding field: Final HEGRA IACT-System results |
Author: | Aharonian, F. Akhperjanian, A. Beilicke, M. Bernlohr, K. Borst, H. Bojahr, H. Bolz, O. Coarasa, T. Contreras, J. Contina, J. Denninghoff, S. Fonseca, V. Girma, M. Gotting, N. Heinzelmann, G. Hermann, G. Heusler, A. Hofmann, W. Horns, D. Jung, I. et al. |
Citation: | Astronomy and Astrophysics: a European journal, 2005; 431(1):197-202 |
Publisher: | E D P Sciences |
Issue Date: | 2005 |
ISSN: | 0004-6361 1432-0746 |
Statement of Responsibility: | F. Aharonian ...G. P. Rowell...and W. Wittek [et al] |
Abstract: | The unidentified TeV source in Cygnus is now confirmed by follow-up observations from 2002 with the HEGRA stereoscopic system of Cherenkov Telescopes. Using all data (1999 to 2002) we confirm this new source as steady in flux over the four years of data taking, extended with radius 6.2′ (±1.2′stat ± 0.9′sys) and exhibiting a hard spectrum with photon index -1.9. It is located in the direction of the dense OB stellar association, Cygnus OB2. Its integral flux above energies E > 1 TeV amounts to ∼% of the Crab assuming a Gaussian profile for the intrinsic source morphology. There is no obvious counterpart at radio, optical nor X-ray energies, leaving TeV J2032+4130 presently unidentified. Observational parameters of this source are updated here and some astrophysical discussion is provided. Also included are upper limits for a number of other interesting sources in the FoV, including the famous microquasar Cygnus X-3. |
Keywords: | gamma rays: observations – stars: early-type – open clusters and associations: individual: Cygnus OB2 |
Rights: | © The European Southern Observatory 2005 |
DOI: | 10.1051/0004-6361:20041552 |
Published version: | http://dx.doi.org/10.1051/0004-6361:20041552 |
Appears in Collections: | Aurora harvest 6 Physics publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_37561.pdf | Published version | 329.37 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.