The University of Tokyo · Physics and Astronomy
Professor D. Tsuna's research lab specializes in time-domain astrophysics, with a primary focus on transient astronomical phenomena such as supernovae, particularly Type II supernovae. The lab conducts detailed photometric and spectroscopic follow-up observations of newly discovered transients to study their explosion mechanisms, progenitor stars, and evolution. A key research direction involves analyzing early-time light curves and spectral features to constrain explosion parameters and circumstellar environments. The lab also contributes to the discovery and characterization of nearby supernovae, leveraging rapid-response observational campaigns to capture critical early-phase data.
Figures are computed from collected data and may differ slightly.
Abstract We present the discovery of the Type II supernova SN 2023ixf in M101 and follow-up photometric and spectroscopic observations, respectively, in the first month and week of its evolution. Our discovery was made within a day of estimated first light, and the following light curve is characterized by a rapid rise (≈5 days) to a luminous peak ( M V ≈ − 18.2 mag) and plateau ( M V ≈ − 17.6 mag) extending to 30 days with a fast decline rate of ≈0.03 mag day −1 . During the rising phase, U − V
Open papers in the app to read, cite, and organize with AI.
