November 21, 2023 article Open access A Simple Method for Predicting N H Variability in Active Galactic Nuclei The Astrophysical Journal DOI: 10.3847/1538-4357/ad014e Full text (OA) OpenAlex Authors 0 Author list not loaded yet. Cited by 0 stored of 5 References 1 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access Transient obscuration event captured in NGC 3227 2023 Astronomy and Astrophysics article Physics and Astronomy Astrophysical Phenomena and Observations Open access 7 citations 1 result