Skip to main content Accessibility help
×
Home
Hostname: page-component-559fc8cf4f-x5fd4 Total loading time: 0.391 Render date: 2021-02-27T10:34:27.555Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

The GeV Gamma-Ray Emission Detected by Fermi-LAT Adjacent to SNR Kesteven 41

Published online by Cambridge University Press:  17 October 2017

Bing Liu
Affiliation:
Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
Yang Chen
Affiliation:
Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China
Xiao Zhang
Affiliation:
Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
Gao-Yuan Zhang
Affiliation:
Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
Yi Xing
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
Thomas G. Pannuti
Affiliation:
Space Science Center, Department of Earth and Space Sciences, Morehead State University, 235 Martindale Drive, Morehead, KY 40351, USA
Rights & Permissions[Opens in a new window]

Abstract

Gamma-ray observations for Supernova remnant (SNR)-molecular cloud (MC) association systems play an important role in the research on the acceleration and propagation of cosmic-ray protons. Through the analysis of 5.6 years of Fermi-Large Area Telescope observation data, here we report on the detection of a gamma-ray emission source near the SNR Kesteven 41 with a significance of 24σ in 0.2–300 GeV. The best-fit location of the gamma-ray source is consistent with the MC with which the SNR interacts. Several hypotheses including both leptonic and hadronic scenarios are considered to investigate the origin of these gamma-rays. The gamma-ray emission can be naturally explained by the decay of neutral pions produced via the collision between high energy protons accelerated by the shock of Kesteven 41 and the adjacent MC. The electron energy budget would be too high for the SNR if the gamma-rays were produced via inverse Compton (IC) scattering off the Cosmic Microwave Background (CMB) photons.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2017 

References

Abdo, A. A., Ackermann, M., Ajello, M., et al. 2009, ApJ (Letters), 706, L1 CrossRefGoogle Scholar
Abdo, A. A., Ackermann, M., Ajello, M., et al. 2010a, ApJ, 718, 348 CrossRefGoogle Scholar
Abdo, A. A., Ackermann, M., Ajello, M., et al. 2010b, Science, 327, 1103 CrossRefGoogle Scholar
Abdo, A. A., Ackermann, M., Ajello, M., et al. 2010c, ApJ, 712, 459 CrossRefGoogle Scholar
Abdo, A. A., Ackermann, M., Ajello, M., et al. 2013, ApJS, 208, 17 CrossRefGoogle Scholar
Ackermann, M., Ajello, M., Allafort, A., et al. 2013, Science, 339, 807 CrossRefGoogle Scholar
Aharonian, F. A. & Atoyan, A. M. 1996, A&A, 309, 917 Google Scholar
Atwood, W. B., et al. 2009, ApJ, 697, 1071 CrossRefGoogle Scholar
Blandford, R. D. & Cowie, L. L. 1982, ApJ, 260, 625 CrossRefGoogle Scholar
Castro, D., Slane, P., Carlton, A., & Figueroa-Feliciano, E. 2013, ApJ, 774, 36 CrossRefGoogle Scholar
Caswell, J. L. 2004, MNRAS, 349, 99 CrossRefGoogle Scholar
Gabici, S., Aharonian, F. A., & Casanova, S. 2009, MNRAS, 396, 1629 CrossRefGoogle Scholar
Ginzburg, V. L. & Syrovatskii, S. I. 1969, The origin of cosmic rays (New York: Gordon and Breach)Google Scholar
Koralesky, B., Frail, D. A., Goss, W. M., Claussen, M. J., & Green, A. J. 1998, AJ, 116, 1323 CrossRefGoogle Scholar
Li, H. & Chen, Y. 2010, MNRAS, 409, L35 CrossRefGoogle Scholar
Li, H. & Chen, Y. 2012, MNRAS, 421, 935 CrossRefGoogle Scholar
Nolan, P. L., Abdo, A. A., Ackermann, M., et al. 2012, ApJS, 199, 31 CrossRefGoogle Scholar
Ohira, Y., Murase, K., & Yamazaki, R. 2011, MNRAS, 410, 1577 Google Scholar
Tang, X. & Chevalier, R. A. 2014, ApJ (Letters), 784, L35 CrossRefGoogle Scholar
Uchiyama, Y., Blandford, R. D., Funk, S., Tajima, H., & Tanaka, T. 2010, ApJ (Letters), 723, L122 CrossRefGoogle Scholar
Wenger, M., Ochsenbein, F., Egret, D., et al. 2000, A&AS, 143, 9 Google Scholar
Whiteoak, J. B. Z. & Green, A. J. 1996, A&AS, 118, 329 Google Scholar
Xing, Y., Wang, Z., Zhang, X., & Chen, Y. 2014, ApJ, 781, 64 CrossRefGoogle Scholar
Zhang, G.-Y., Chen, Y., Su, Y., Zhou, X., Pannuti, T. G., & Zhou, P. 2015, ApJ, 799, 103 CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 79 *
View data table for this chart

* Views captured on Cambridge Core between 17th October 2017 - 27th February 2021. This data will be updated every 24 hours.

Access

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

The GeV Gamma-Ray Emission Detected by Fermi-LAT Adjacent to SNR Kesteven 41
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

The GeV Gamma-Ray Emission Detected by Fermi-LAT Adjacent to SNR Kesteven 41
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

The GeV Gamma-Ray Emission Detected by Fermi-LAT Adjacent to SNR Kesteven 41
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *