GeV–TeV Counterparts of SS 433/W50 from Fermi -LAT and HAWC Observations

Fang, Ke; Charles, Eric; Blandford, Roger D.

doi:10.3847/2041-8213/ab62b8

Title: GeV–TeV Counterparts of SS 433/W50 from Fermi -LAT and HAWC Observations

Journal Article · 17 January 2020 · The Astrophysical Journal. Letters (Online)

DOI: https://doi.org/10.3847/2041-8213/ab62b8 · OSTI ID:1608977

^[1];

^[2]; Blandford, Roger D. ^[1]

Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology (KIPAC)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

The extended jets of the microquasar SS 433 have been observed in optical, radio, X-ray, and recently very-high-energy γ-rays by High Altitude Water Cerenkov (HAWC). The detection of HAWC γ-rays with energies as great as 25 TeV motivates searches for high-energy γ-ray counterparts in the Fermi-Large Area Telescope (LAT) data in the 100 MeV–300 GeV band. In this paper, we report on the first joint analysis of Fermi-LAT and HAWC observations to study the spectrum and location of γ-ray emission from SS 433. Our analysis finds common emission sites of GeV-to-TeV γ-rays inside the eastern and western lobes of SS 433. The total flux above 1 GeV is $$\sim 1\times {10}^{-10}\,{\mathrm{cm}}^{-2}\,{{\rm{s}}}^{-1}$$ in both lobes. The γ-ray spectrum in the eastern lobe is consistent with inverse Compton emission by an electron population that is accelerated by jets. To explain both the GeV and TeV flux, the electrons need to have a soft intrinsic energy spectrum, or undergo a quick cooling process due to synchrotron radiation in a magnetized environment.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: Centre National de la Recherche Scientifique (CNRS); Commissariat a l'Energie Atomique; High Energy Accelerator Research Organization (KEK); Japan Aerospace Exploration Agency (JAXA); Ministry of Education, Culture, Sports, Science and Technology (MEXT); USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1608977

Journal Information:: The Astrophysical Journal. Letters (Online), Journal Name: The Astrophysical Journal. Letters (Online) Journal Issue: 1 Vol. 889; ISSN 2041-8213

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

References (36)

Particle acceleration at astrophysical shocks: A theory of cosmic ray origin Blandford, Roger; Eichler, David Physics Reports, Vol. 154, Issue 1 https://doi.org/10.1016/0370-1573(87)90134-7	journal	October 1987
A multi-wavelength study of the western lobe of W50 powered by the galactic microquasar SS 433 Moldowan, A.; Safi-Harb, S.; Fuchs, Y. Advances in Space Research, Vol. 35, Issue 6 https://doi.org/10.1016/j.asr.2005.01.086	journal	January 2005
Very-high-energy particle acceleration powered by the jets of the microquasar SS 433 Abeysekara, A. U.; Albert, A.; Alfaro, R. Nature, Vol. 562, Issue 7725 https://doi.org/10.1038/s41586-018-0565-5	journal	October 2018
Constraints on particle acceleration in SS433/W50 from MAGIC and H.E.S.S. observations Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A. Astronomy & Astrophysics, Vol. 612 https://doi.org/10.1051/0004-6361/201731169	journal	April 2018
Tentative evidence of spatially extended GeV emission from SS433/W50 Sun, Xiao-Na; Yang, Rui-Zhi; Liu, Bing Astronomy & Astrophysics, Vol. 626 https://doi.org/10.1051/0004-6361/201935621	journal	June 2019
XMM-Newton observations of the eastern jet of SS 433 Brinkmann, W.; Pratt, G. W.; Rohr, S. Astronomy & Astrophysics, Vol. 463, Issue 2 https://doi.org/10.1051/0004-6361:20065570	journal	November 2006
The X-ray lobes of SS 433 Watson, M. G.; Willingale, R.; Grindlay, J. E. The Astrophysical Journal, Vol. 273 https://doi.org/10.1086/161403	journal	October 1983
The GB6 Catalog of Radio Sources Gregory, P. C.; Scott, W. K.; Douglas, K. The Astrophysical Journal Supplement Series, Vol. 103 https://doi.org/10.1086/192282	journal	March 1996
ROSAT and ASCA Observations of W50 Associated with the Peculiar Source SS 433 Safi‐Harb, Samar; Ogelman, Hakki The Astrophysical Journal, Vol. 483, Issue 2 https://doi.org/10.1086/304274	journal	July 1997
Rossi X‐Ray Timing Explorer Observations of the Eastern Lobe of W50 Associated with SS 433 Safi‐Harb, Samar; Petre, Robert The Astrophysical Journal, Vol. 512, Issue 2 https://doi.org/10.1086/306803	journal	February 1999
Twenty Years of Timing SS 433 Eikenberry, S. S.; Cameron, P. B.; Fierce, B. W. The Astrophysical Journal, Vol. 561, Issue 2 https://doi.org/10.1086/323380	journal	November 2001
Symmetry in the Changing Jets of SS 433 and Its True Distance from Us Blundell, Katherine M.; Bowler, Michael G. The Astrophysical Journal, Vol. 616, Issue 2 https://doi.org/10.1086/426542	journal	October 2004
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION Atwood, W. B.; Abdo, A. A.; Ackermann, M. The Astrophysical Journal, Vol. 697, Issue 2 https://doi.org/10.1088/0004-637X/697/2/1071	journal	May 2009
Multiwavelength Observations of the ss 433 jets Marshall, Herman L.; Canizares, Claude R.; Hillwig, Todd The Astrophysical Journal, Vol. 775, Issue 1 https://doi.org/10.1088/0004-637X/775/1/75	journal	September 2013
Simple Analytical Approximations for Treatment of Inverse Compton Scattering of Relativistic Electrons in the Blackbody Radiation Field Khangulyan, D.; Aharonian, F. A.; Kelner, S. R. The Astrophysical Journal, Vol. 783, Issue 2 https://doi.org/10.1088/0004-637X/783/2/100	journal	February 2014
Detection of Persistent Gamma-Ray Emission Toward Ss433/W50 Bordas, P.; Yang, R.; Kafexhiu, E. The Astrophysical Journal, Vol. 807, Issue 1 https://doi.org/10.1088/2041-8205/807/1/L8	journal	June 2015
Gamma-rays from SS433: evidence for periodicity Rasul, Kajwan; Chadwick, Paula M.; Graham, Jamie A. Monthly Notices of the Royal Astronomical Society, Vol. 485, Issue 2 https://doi.org/10.1093/mnras/stz559	journal	February 2019
Absorption of very high energy gamma rays in the Milky Way Vernetto, Silvia; Lipari, Paolo Physical Review D, Vol. 94, Issue 6 https://doi.org/10.1103/PhysRevD.94.063009	journal	September 2016
Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data Aartsen, M. G.; Ackermann, M.; Adams, J. The European Physical Journal C, Vol. 79, Issue 3 https://doi.org/10.1140/epjc/s10052-019-6680-0	journal	March 2019
Observations of SS 433 Margon, Bruce Annual Review of Astronomy and Astrophysics, Vol. 22, Issue 1 https://doi.org/10.1146/annurev.aa.22.090184.002451	journal	September 1984
The Use of Maximum Likelihood Estimates in $\chi^2$ Tests for Goodness of Fit Chernoff, Herman; Lehmann, E. L. The Annals of Mathematical Statistics, Vol. 25, Issue 3 https://doi.org/10.1214/aoms/1177728726	journal	September 1954
The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses Wilks, S. S. The Annals of Mathematical Statistics, Vol. 9, Issue 1 https://doi.org/10.1214/aoms/1177732360	journal	March 1938
Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data Aartsen, M. G.; Ackermann, M.; Adams, J. RWTH Aachen University https://doi.org/10.18154/rwth-2019-03420	text	January 2019
Constraints on particle acceleration in SS433/W50 from MAGIC and H.E.S.S. observations Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-02028	text	January 2018
Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data Aartsen, M. G.; Ackermann, M.; Adams, J. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2020-00118	text	January 2019
Fermi Observation of the Jets of the Microquasar SS 433 Xing, Yi; Wang, Zhongxiang; Zhang, Xiao The Astrophysical Journal, Vol. 872, Issue 1 https://doi.org/10.3847/1538-4357/aafc60	journal	February 2019
Measurement of the Crab Nebula Spectrum Past 100 TeV with HAWC Abeysekara, A. U.; Albert, A.; Alfaro, R. The Astrophysical Journal, Vol. 881, Issue 2 https://doi.org/10.3847/1538-4357/ab2f7d	journal	August 2019
Multiwavelength Observations of the SS 433 Jets Marshall, Herman L.; Canizares, Claude R.; Hillwig, Todd arXiv https://doi.org/10.48550/arxiv.1307.8427	text	January 2013
Simple analytical approximations for treatment of inverse Compton scattering of relativistic electrons in the black-body radiation field Khangulyan, Dmitry; Aharonian, Felix A.; Kelner, Stanislav R. arXiv https://doi.org/10.48550/arxiv.1310.7971	text	January 2013
Detection of persistent gamma-ray emission toward SS433/W50 Bordas, Pol; Yang, Ruizhi; Kafexhiu, Ervin arXiv https://doi.org/10.48550/arxiv.1411.7413	text	January 2014
Constraints on particle acceleration in SS433/W50 from MAGIC and H.E.S.S. observations Collaboration, Magic; Ahnen, M. L.; Ansoldi, S. arXiv https://doi.org/10.48550/arxiv.1707.03658	text	January 2017
Very high energy particle acceleration powered by the jets of the microquasar SS 433 Collaboration, Hawc; Abeysekara, A. U.; Albert, A. arXiv https://doi.org/10.48550/arxiv.1810.01892	text	January 2018
FERMI observation of the jets of the microquasar SS433 Xing, Yi; Wang, Zhongxiang; Zhang, Xiao arXiv https://doi.org/10.48550/arxiv.1811.09495	text	January 2018
Tentative evidence of spatially extended GeV emission from SS433/W50 Sun, Xiao-Na; Yang, Rui-Zhi; Liu, Bing arXiv https://doi.org/10.48550/arxiv.1904.05127	text	January 2019
Measurement of the Crab Nebula Spectrum Past 100 TeV with HAWC Collaboration, Hawc; Abeysekara, A. U.; Albert, A. arXiv https://doi.org/10.48550/arxiv.1905.12518	text	January 2019
XMM-Newton observations of the eastern jet of SS433 Brinkmann, W.; Pratt, G. W.; Rohr, S. arXiv https://doi.org/10.48550/arxiv.astro-ph/0610781	text	January 2006

Similar Records

Discovery of the TeV Emission from the Jet Interaction Regions of SS 433 with HAWC

Journal Article · 2019 · PoS - Proceedings of Science · OSTI ID:1783545

Rho, Chang Dong; Rho, Chang Dong; Zhou, Hao; +1 more

Hard X-Ray Emission from the Eastern Jet of SS 433 Powering the W50 “Manatee” Nebula: Evidence for Particle Reacceleration

Journal Article · 2022 · The Astrophysical Journal · OSTI ID:1881947

Safi-Harb, Samar; Mac Intyre, Brydyn; Zhang, Shuo; +12 more

Very-high-energy particle acceleration powered by the jets of the microquasar SS 433

Journal Article · 2018 · Nature (London) · OSTI ID:1477594

Abeysekara, A. U.; Albert, A.; Alfaro, R.; +103 more

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Gamma-ray sources
X-ray binary stars

Title: GeV–TeV Counterparts of SS 433/W50 from Fermi -LAT and HAWC Observations

Citation Formats

References (36)

Similar Records

Related Subjects