Semantic Scholar Open Access 2017 517 sitasi

Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons

G. Ambrosi Q. An R. Asfandiyarov P. Azzarello P. Bernardini +153 lainnya

Lihat Sumber DOI

Abstrak

High-energy cosmic-ray electrons and positrons (CREs), which lose energy quickly during their propagation, provide a probe of Galactic high-energy processes and may enable the observation of phenomena such as dark-matter particle annihilation or decay. The CRE spectrum has been measured directly up to approximately 2 teraelectronvolts in previous balloon- or space-borne experiments, and indirectly up to approximately 5 teraelectronvolts using ground-based Cherenkov γ-ray telescope arrays. Evidence for a spectral break in the teraelectronvolt energy range has been provided by indirect measurements, although the results were qualified by sizeable systematic uncertainties. Here we report a direct measurement of CREs in the energy range 25 gigaelectronvolts to 4.6 teraelectronvolts by the Dark Matter Particle Explorer (DAMPE) with unprecedentedly high energy resolution and low background. The largest part of the spectrum can be well fitted by a ‘smoothly broken power-law’ model rather than a single power-law model. The direct detection of a spectral break at about 0.9 teraelectronvolts confirms the evidence found by previous indirect measurements, clarifies the behaviour of the CRE spectrum at energies above 1 teraelectronvolt and sheds light on the physical origin of the sub-teraelectronvolt CREs.

Topik & Kata Kunci

Physics Medicine

Penulis (158)

G. Ambrosi

Q. An

R. Asfandiyarov

P. Azzarello

P. Bernardini

B. Bertucci

M. Cai

J. Chang

D. Chen

H. Chen

J. Chen

W. Chen

M. Cui

T. Cui

A. D’Amone

A. Benedittis

I. Mitri

M. D. Santo

J. N. Dong

T. Dong

Y. Dong

Z. Dong

G. Donvito

D. Droz

K. Duan

J. Duan

M. Duranti

D. D’Urso

R. Fan

Y. Fan

F. Fang

C. Feng

L. Feng

P. Fusco

V. Gallo

F. Gan

M. Gao

S. Gao

F. Gargano

S. Garrappa

K. Gong

Y. Gong

D. Guo

J. Guo

Y. Hu

G. Huang

Y. -. Huang

M. Ionica

D. Jiang

W. Jiang

X. Jin

J. Kong

S. Lei

S. Li

X. Li

W. Li

Y. Li

Y. Liang

N. Liao

H. Liu

J. Liu

S. Liu

W. Liu

Y. Liu

F. Loparco

M. Ma

P. Ma

S. Ma

T. Ma

X. Ma

G. Marsella

M. Mazziotta

D. Mo

X. Niu

X. Peng

W. Peng

R. Qiao

J. Rao

M. Salinas

G. Shang

W. Shen

Z. Shen

J. Song

H. Su

M. Su

Z. Sun

A. Surdo

X. Teng

X. Tian

A. Tykhonov

V. Vagelli

S. Vitillo

C. Wang

H. Wang

J. Wang

L. Wang

Q. Wang

S. Wang

X. H. Wang

X. Wang

Y. Wang

Yu Wang

S. Wen

Z. Wang

D. Wei

J. Wei

Y. F. Wei

D. Wu

J. Wu

L. Wu

S. Wu

X. Wu

K. Xi

Z. Xia

Y. Xin

H. Xu

Z. L. Xu

Z. Xu

G. Xue

H. Yang

P. Yang

Y. Q. Yang

Z. L. Yang

H. Yao

Y. Yu

Q. Yuan

C. Yue

J. Zang

C. Zhang

D. L. Zhang

F. Zhang

J. Zhang

L. Zhang

P. Zhang

S. X. Zhang

W. Zhang

Y. Zhang

Y. P. Zhang

Z. Zhang

H. Zhao

X. Zhao

C. Zhou

Y. Zhou

X. Zhu

Y. Zhu

S. Zimmer

Format Sitasi

APA MLA BibTeX

Ambrosi, G., An, Q., Asfandiyarov, R., Azzarello, P., Bernardini, P., Bertucci, B. et al. (2017). Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons. https://doi.org/10.1038/nature24475

@article{ambrosi2017, author = {G. Ambrosi and Q. An and R. Asfandiyarov and P. Azzarello and P. Bernardini and B. Bertucci and M. Cai and J. Chang and D. Chen and H. Chen and J. Chen and W. Chen and M. Cui and T. Cui and A. D’Amone and A. Benedittis and I. Mitri and M. D. Santo and J. N. Dong and T. Dong and Y. Dong and Z. Dong and G. Donvito and D. Droz and K. Duan and J. Duan and M. Duranti and D. D’Urso and R. Fan and Y. Fan and F. Fang and C. Feng and L. Feng and P. Fusco and V. Gallo and F. Gan and M. Gao and S. Gao and F. Gargano and S. Garrappa and K. Gong and Y. Gong and D. Guo and J. Guo and Y. Hu and G. Huang and Y. -. Huang and M. Ionica and D. Jiang and W. Jiang and X. Jin and J. Kong and S. Lei and S. Li and X. Li and W. Li and Y. Li and Y. Liang and Y. Liang and N. Liao and H. Liu and J. Liu and S. Liu and W. Liu and Y. Liu and F. Loparco and M. Ma and P. Ma and S. Ma and T. Ma and X. Ma and X. Ma and G. Marsella and M. Mazziotta and D. Mo and X. Niu and X. Peng and W. Peng and R. Qiao and J. Rao and M. Salinas and G. Shang and W. Shen and Z. Shen and Z. Shen and J. Song and H. Su and M. Su and Z. Sun and A. Surdo and X. Teng and X. Tian and A. Tykhonov and V. Vagelli and S. Vitillo and C. Wang and H. Wang and H. Wang and J. Wang and L. Wang and Q. Wang and S. Wang and X. H. Wang and X. Wang and Y. Wang and Y. Wang and Yu Wang and S. Wen and Z. Wang and D. Wei and J. Wei and Y. F. Wei and D. Wu and J. Wu and L. Wu and S. Wu and X. Wu and K. Xi and Z. Xia and Y. Xin and H. Xu and Z. L. Xu and Z. Xu and G. Xue and H. Yang and P. Yang and Y. Q. Yang and Z. L. Yang and H. Yao and Y. Yu and Q. Yuan and C. Yue and J. Zang and C. Zhang and D. L. Zhang and F. Zhang and J. Zhang and J. Zhang and J. Zhang and L. Zhang and P. Zhang and S. X. Zhang and W. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and Y. P. Zhang and Z. Zhang and Z. Zhang and H. Zhao and H. Zhao and X. Zhao and C. Zhou and Y. Zhou and X. Zhu and Y. Zhu and S. Zimmer}, title = {Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons}, year = {2017}, journal = {Semantic Scholar}, doi = {10.1038/nature24475}, url = {https://www.semanticscholar.org/paper/315d41aae1d8f6bf57d22be0ea0445913ce61e03}, }

Akses Cepat

Lihat di Sumber doi.org/10.1038/nature24475

Informasi Jurnal

Tahun Terbit: 2017
Bahasa: en
Total Sitasi: 517×
Sumber Database: Semantic Scholar
DOI: 10.1038/nature24475
Akses: Open Access ✓