Questions related to Space Science
I have plotted solar wind parameters data (such as IMF-B, Vsw, Nsw, Tsw) by Parker Solar Probe, it shows maximum fluctuations nearby Sun (around 0.17 au for second encounter data, and around 0.13 au for fifth encounter data). What are the reasons behind this? This might be a basic question, but I am looking for some good references with detailed explanations. Thank you.
I was looking for some sources (if available), which contain information about geomagnetic events, ICMEs, Flares, SEPs during the different encounters by Parker Solar Probe (PSP). I am working on the analysis of abrupt fluctuation in solar wind parameters during the encounters by PSP. I would really appreciate your suggestions. :)
Recently, I have written a research article. I want to produce preprint of it. I found various platforms for creating preprints of articles, including arXiv and Researchsquare. Personally, which platform do you prefer?
Parker solar probe is providing data from different encounters. If we plot data over a distance (for eg: from 0.5 au to 0.17 au), it shows, towards the sun, interplanetary magnetic field increases. It has also positive correlation with solar wind density and temperature, however, slightly weak correlation was obtained for solar wind speed. I want to learn how solar wind parameters vary over a distance, and a physics associated with it. Need your suggestion (please suggest me some good articles, if available). Thank you.
I heard that some storm events can occur without any change in the Dst index. Significant change in solar wind parameters that are triggered by storms events, but, without any change in Dst? Is it true? If yes, can you please suggest some events (or articles) for example? I am really excited to plot them. Moreover, what are the possible reasons behind those effects?
I have calculated the ROTI from a dataset with my understanding, and I need to validate my results with some standard code results. Are there any sites to download the ROTI to confirm my code output to make sure I am not wrong? You can suggest the algorithm to calculate ROTI.
Zipped folder contains aastex.cls and spr-astr-addons.sty files. No problem in compiling with my Winedt. But arxiv processing failed while uploading the manuscript. The template is of the Journal "Astrophysics and Space Science".
Dear Friends and Colleagues from RG,
I wish You all the best in the New Year. I wish you a successful continuation and successes in scientific work, achieving interesting results of scientific research in the New Year 2019 and I also wish you good luck in your personal life, all the best.
In the New Year, I wish You success in personal and professional life, fulfillment of plans and dreams, including successes in scientific work, All Good.
In the ending year, we often ask ourselves:
Have we successfully implemented our research plans in the ending year? We usually answer this question that a lot has been achieved, that some of the plans a year ago have been realized, but not all goals have been achieved.
I wish You that the Next Year would be much better than the previous ones, that each of us would also achieve at least some of the planned most important goals to be achieved in personal, professional and scientific life.
I wish You dreams come true regarding the implementation of interesting research, I wish You fantastic results of research and effective development of scientific cooperation.
I wish You effective development of scientific cooperation, including international scientific cooperation, implementation of interesting research projects within international research teams and that the results of scientific research are appreciated, I wish You awards and prizes for achievements in scientific work.
I wish You many successes in scientific work, in didactic work and in other areas of your activity in the New Year, and I also wish you health, peace, problem solving, prosperity in your personal life, all the best.
Thank you very much.
I wish you the best in New Year 2019.
Happy New Year 2020.
Should a manned mission to Mars, which could be implemented in a few years, be an international mission, or rather a national one, inspired and organized according to the familiar concept of the 1970s, of international rivalry of the leading economically and politically largest countries?
Apparently a manned mission to the planet Mars is now technically possible.
Researchers working on space exploration programs argue that it is technically possible that humans already have the necessary technology to carry out a two-year manned mission to Mars.
First of all, it is necessary for the US President to issue a program of a manned mission to Mars.
A similar program in the 1980s was announced by then US President John F. Kennedy.
The plan of a manned mission to the moon was fully realized at that time.
However, the current mission to Mars, technically possible, would require large financial outlays for the implementation of this mission.
Perhaps it would be necessary to organize an international consortium that would organize an international manned mission to Mars.
Maybe it could also be an international crew of this mission?
Then mission costs could be spread over several countries and it would have global significance in terms of international cooperation.
The previous analogous manned space mission, i.e. the manned expedition to Earthly Princes in the 1970s, had the significance of political rivalry between the then US and the Soviet Union.
It was a symbolic technological race.
Is the planned manned mission to Mars also inspired by this type of international competition, for example between the US and China or possibly also some other countries?
China is rapidly developing technologically, aspiring to become a global powerhouse in a few years time. 1 not only in the scope of production of various goods and economic growth but also in the matter of having the most modern innovative technologies implemented in various economic applications.
In the US, a very large, historically high public debt can be a significant finns barrier to finance and thus the USA will organize a manned mission to Mars in the next few years.
If this mission to Mars is mainly inspired by this new international rivalry in terms of having technological capabilities, it is currently difficult to predict which country will win the race and be the first to organize manned missions to Mars?
In view of the above, I ask you with the following question: Should a manned mission to Mars, which could be implemented in a few years be an international mission, or rather a national one, inspired and organized according to the familiar concept of the 1970s, of international rivalry leading economically and politically the largest countries?
Please reply. I invite you to the discussion
I'm starting a master's research about on-board image processing for small satellites but struggling to find a niche or problem to solve or discuss. I've read less than 15 articles about related works and would hopefully find one nice topic to pursue if I continue reading, but I just want to ask some senior researchers in this field what would they recommend.
Hi, I am looking for open source softwares for computational physics. Suggestions should be in the following format:
1. Software name
2. Type of interface and programming language
3. Methods or models available
4. Area of applications
Thank you in advance!
I am a third year Mechanical Engineering student from Sardar Vallabhbhai National Institute of Technology Surat, India. I am interested in pursuing higher studies in the field of space sciences, in particular study of planetary hydrodynamics, astrophysical plasma and electrical activities in planetary atmospheres.
I am looking for universities as I want to pursue higher studies and a career in the field mentioned above. Please give your suggestions and recommendations in the following format.
Name of university
Research group, associated research (current, past and future prospects)
Normally, people apply plane-wave analyses even in a curved geometry, often irrespective of wavelengths. It is mostly encountered in the area of astrophysics and space sciences, even without considering any inter-dependency between the perturbation wavelength and the radius of curvature. What is the main justification?
Can I get some references on the planar-nonplanar wave connectivity and inter-transitional behaviour?
I am curious about this topic. Most of the research about microgravity is focus on the morphogenesis and tropism of the plant. As far as I know, the microgravity can affect the production of plant hormone. That is the reason why the growth of plant is not normal. If the plant growth is not normal, is photosynthesis must be affected?
Experts, I need your help and share me some literature about the microgravity, knowledge and wisdom in writing a research proposal.
I am interested to make a study and write a research proposal.
Thank you and more power!
What relevant science missions, that can be designed in cis-lunar space to get relevant science data not available but needed by the space science community?
Especially, taking nature of orbits around liberation points in consideration.
If possible, a narrowed down list of science instruments that can be deployed aboard a spacecraft would be great.
I want to know when the convective zone of any star start to begin and what is the thickness of convective envelope.
My question is about how to convert the data to percentage or to value that has defined dimension. Also it is nice to be clear if those data could be compared to those from in-situ measurements. Up to now I could not find reference for usage of this product.
I am thinking of typical Mercury and Gemini retrofire maneuvers. Mercury was nose down about 34 degrees at retrofire. Gemini was about 20 degrees nose down. Is there a convenient way for a non-mathematician to estimate the resulting orbit after such a maneuver--maybe a graph or a macro or app?
Prediction of Solar cycle 24 based on various models that is a less active cycle is well known. What is the best model or way to predict Solar cycle 25?
I've red that Minkowski space is reducible and Rindler space is irreducible. How do I have to understand this? And that means further both spaces are disjoint. How can I make sense of this?
If one wants to simulate, for example, the effects of protons in LEO/GEO orbit on different materials, the raw data are needed for the source simulation. The same for electron spectra.
Suppose a matter A with mass, m1, and spin up. Suppose a second matter B with mass,m2 and spin down. If both particles have the same mass, m1=m2. Is this a particle-antiparticle reaction? That is:
for m1=m2=m, the reaction A Sup + B Sdown --> 0
A Sup + B Sdown --> (A+B) with S = 0
UFOs (Unidentified Flying Objects) were never a threat to the security of humankind. But repeatedly it has been claimed that residents, military personnel in particular, have seen them flying, sometimes crashing into the field. One such incident happened recently on January 23rd, 2014, in Raleigh, North Carolina. One of the enhanced images of it is attached here.
Have these things ever existed and if yes, what are they made of?
Time is included in the SpaceTime model as if it were a physical dimension of space.
If this is true, then all actions and all change will be encompassed by this 4-D hyperspace. There cannot be any change outside of this hyperspace, since change would require time - which is already accounted for in the 4-D model.
Does not this imply that all past and future events are immutable - since there cannot be any change to SpaceTime?
We could be in the situation of not being able to determine the spacetime positions of all objects, however the model would seem to imply that this is a consequence of our lack of understanding, since the model encompasses all actions and events.
I have the IRAS number of a few thousand objects that I would like to locate in the WISE all-sky catalog. I planned to retrieve the data from the NASA/IPAC Infrared Science Archive. It seems that I must provide the RA and Dec of the objects in a search file. While I can obtain the RA and Dec of each object through SIMBAD, the sample is too large for me to cross reference manually. Further, the coordinates in SIMBAD are sometimes different from those in the WISE catalog. I found that there may either be missing objects or multiple objects per query in the search results depending on how I set my search radius. Is there an effective way for me to ensure to obtain the data that I want from WISE?
Recent study performed by Wittke et al., who analyzed impact spherules, supports theory of cosmic impact 12,800 years ago. This event may be responsible for fundamental and very fast climate change, causing the extinction of most of the big animals over North America. This is an exciting theory, and, if correct, it may be very important also for our understanding of asteroid/comets impact threat. But, is there enough evidence to support this claim?
There is possibilty for any molecules or atoms to have a particular surface energy which allow them to move, whether it is translational, rotational, vibrational or electronic.