Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
Round 1
Reviewer 1 Report
The manuscript tackles the explanation of interesting features observed in the flux of Galactic cosmic rays (CRs), namely the "bump" (hardening/softening) and the CR anisotropy in the TeV region.
The idea that a single source may be responsible for both observational features is interesting and seems well supported by the analysis.
I suggest to check a posteriori the propagation time from Geminga to Earth at different energies and to compare it with its age, also discussing uncertainties the age and distance of the source. The HAWC detection of a TeV halo around Geminga suggests that the local diffusion coefficient is indeed smaller than the average Galactic one, and it is not clear if this effect is included in the calculation.
In addition, it would be interesting to check:
-- the role of other nearby sources (Monogem?);
-- the role of Geminga in providing CR electrons and positrons.
Finally, it should be made clear what the authors are assuming for the release of CRs from Geminga (instantaneous, continuous).
Overall, the science case of connecting the phase and energy dependence of the anisotropy with the "bump" and Geminga's contribution is quite novel and interesting. However, the paper needs a massive revision in terms of English grammar: many sentences are just incorrect and/or hard to understand. Before being considered for publication the manuscript needs to be revised by a native speaker.
Author Response
Dear Reviewer：
We thank the referee for carefully reading our manuscript and giving valuable comments and
suggestions. Our replies to them are as follows. All of the modifications have been highlighted in
the manuscript.
Please refer to the attachment for the specific modification.
Kind regards.
Yours sincerely,
Aifeng Li
Author Response File: 
Author Response.pdf
Reviewer 2 Report
REFEREE REPORT
MANUSCRIPT: universe-1700493- peer-review-v1
TITLE: The interpretation of spectra and anisotropy of galactic cosmic rays
By Aifeng Li et al.
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The paper represents an interesting contribution in the field of cosmic ray physics and astrophysics as well. It is devoted to present reasonable explanation of Cosmic Ray anisotropy and of energy spectra for 100 GeV to PeV. A new method based on spatial dependent propagation (SPD) model, the anisotropic diffusion of Cosmic ray induced by local interstellar magnetic field (LIMF) and considering contribution from nearby Geiminga SNR source, that can account simultaneously anisotropy and cosmic ray spectra for the energy range between 100GeV and PeV is presented. These calculations have been done for several cosmic ray components. In order to compare the results provided by the proposed model with the observed data a wide range of experiments such as AMS-2, CREAM , KASCADE, TRACER etc have been used. It remains the assessment of the proposed model by the future high precision measurements of cosmic ray anisotropy by LHAASO experiment.
In general, the paper is of fair quality, but there are some shortcomings and imprecise descriptions, which need clarification. The abstract is an objective representation of the article and summarizes the results presented in the paper. The Introduction section is comprehensible, well structured and presents the basis and motivation of this study. The conclusion clearly pointed out the presented in the paper results. The equations are clearly written. The bibliography is appropriate and updated, however I propose to take a second look in order to avoid typing mistakes The quality of the plot Figure 2 needs improvement.
As my native language is not English, I can give only some marginal comments on the language and style, but I recommend giving the manuscript to a colleague fluent in English or a native speaker.
All above considered my recommendation is to publish the paper after minor revision.
Hereafter, my feedback includes some mostly editorial suggestions and clarifications.
P1L20-21: “The future….., would be of the essence in the assessment of our model.
P2L32: Please correct the values. The diffusion coefficient exponent varies between 0.38-0.5.
P2L46: Clarify the sentence “the amplitude increases and then decreases” Rewrite more accurately.
P2L47: Please R.A. needs explanation
P2L52 The Abbreviation LRMF is written without given previously the full name.
P2L63: Delete “etc” and write explicitly what you refer about.
P5: Although Figure 2 presents a significant result the quality is in insufficiently resolution. At least a resolution of ³300dpi is required.
In the Section 4 § 4.1 Make a comment about the differences in the computed energy spectra between heavy elements and proton and He.
Comments for author File: Comments.pdf
Author Response
Dear Reviewer：
We thank the reviewer for carefully reading our manuscript and giving valuable comments and suggestions. Our replies to them are as follows. All of the modifications have been highlighted in the manuscript.
Please refer to the attachment for the specific modification.
Kind regards.
Yours sincerely,
Aifeng Li
Author Response File: Author Response.pdf
Reviewer 3 Report
The article is very relevant. It explores an environment with anisotropy and energy spectra from 100 GeV to PeV, using DRAGON code. The text is well written, and the results are exciting. Geminga is a much-explored source in the literature and certainly contributes to the Galactic cosmic ray spectrum. The anisotropy approach is essential in studying galactic propagation with magnetic fields. I recommend the text for the publication and suggest the method with other sources to the authors.
Minor points:
To mention the gas (inside Galaxy) model used by DRAGON. I think it's the same one used by GALPROP.
pag. 68: Add a period after reference [51].
pag. 120: Numerous of literatures [63,64...]: Add more references here.
pag. 71-74: Suggestion: "Ultimately, our model can simultaneously explain CR anisotropy and energy spectra. For example, the high-precision measurements of CR anisotropy by the LHAASO experiment could help test this scenario."
Author Response
Dear Reviewer：
We thank the reviewer for carefully reading our manuscript and giving valuable comments and suggestions. Our replies to them are as follows. All of the modifications have been highlighted in the manuscript.
Please refer to the attachment for the specific modification.
Kind regards.
Yours sincerely,
Aifeng Li
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The authors have addressed my comments in a satisfactory way. I recommend publication
