Firstly, it is possible for a researcher to go full one year without publishing a single paper while some researchers publishes an excess of 5-10 per year or more. There are some factors to consider:
1. Type of research. (Original research, review, book or book chapters, short communication, case studies, commentaries etc). Original research takes a bit longer from field work to publishing. With this kind of writing alone, one can even go as long as 2-3 years without having a single paper. So my advice on this is to engage simultaneously on other kinds of writing mentioned above. It may not earn you much point as original research article but in the long run you will be at a leading position than one who is only focusing on original research papers. Nowadays we have a lot of salami slicing just to have many research article for points. This should be discouraged.
2. Academic collaborative writing. Joint research have proven overtime to be more effective than working alone. One man cannot finish an elephant. There are so many unfinished projects by sole authors. For example, some spend an entire career writing one book which could have been accomplished within 2-3 years if they had involved others. Involving others not only make it faster but brings quality to it.
No specific number. It depends on the quality of work and the engagement of the researcher. However, I don't believe a dedicated researcher cannot publish at least a paper in a year. That's the least I would expect - even if review or book chapter, a well planned researcher should share his/her knowledge with the public at least once a year.
Generally, it depends on the paper's quality, data availability, the number of authors, and especially the research's commitments, willingness and competency. On average, the researcher can publish two articles per year.
Let's formulate it in page numbers: 2 journal papers (ca. 10 pages each) or 3-4 conference short papers (e.g. 5 pages each). In total, writing output of about 17-20 pages of high quality research is good.
There is no precise requirements on the number of published scientific texts per year in most scientific centers. Sometimes a monograph is written for many months. Previously it could have been preceded by research that lasted for many months. Articles may also arise as a result of the ongoing longer research period. It so happens that a scientist, researcher, writes a few texts a year, and in another year more. This may be due to a change in the concept of data collection and research. It may be related to the specificity of the type of written texts. Short texts like journal articles are usually researchers, researchers write more than monographs and other books on an annual basis due to their varying volume. In addition, research centers, institutes and universities in which researchers and research and teaching staff are employed may have different requirements regarding the expected number of written and published texts by particular professors, lecturers, assistants, etc.
Publish or persih! I think that every researcher could publish minimum two journal papers per year. (average). Also, don't forget conference papers (one or two per year) and monographs (every five year).
Number of quality papers depends on the research work that is been carried out through out the year. Research is an ever going process involving the written work (papers) to be stored for further work for upcoming generation as an inspiration volume.
I think it really depends on the area. Plus, there is a huge difference between publishing a paper as a first author leading the original study and just contribution to someone else's paper as second/third.. author.
There are many factors, but the main one is the research quality in terms of originality, high scientific level and impact factor of the good reputation journal
The mentioned is depending on several factors.Of these factors are the researcher himself ,the institute,the researcher discipline and the cost of publications.However , I believe that having in average two papers in indexed journal is good enough .Salam and best wishes .
Thanks for nice question. It seems to me, it depends on the research area or work i.e., in-vivo or in-situ experiments or research. It's not mandatory to publish a paper per year without a quality.