No tested tail fit reaches a 500 ppm loss in covered Beta Pictoris archive flux from TESS sectors 87, 95, and 98

We searched public TESS light curves of Beta Pictoris for deep, isolated dimming events. We tested nine dust-tail shapes in sectors 87, 95, and 98. We kept samples with no quality flags, removed 50 high-frequency sinusoids per long data block, and made 30-minute bins. The three sectors contain 81.87 days of accepted two-minute samples. The eligible onset measure is 45.75 to 63.04 days, depending on shape. No eligible fit reaches a loss of 500 parts per million (ppm) in either simple aperture flux or corrected flux. The known sector 6 event is recovered near BTJD 1486.35 at about 2069 ppm in corrected flux. For 1000 ppm signals added before our pulsation removal, recovery is 808/810 (99.8%) in simple aperture flux and 810/810 (100.0%) in corrected flux. These tests use the released archive flux. Official notes list an aperture warning for the target in sector 95. The tests do not measure losses in image extraction or archive correction. Deep points near data gaps remain outside some search windows. The result is a measured null for this search rule. It does not establish a limit on all comets or a change in their rate. The package has source files, hashes, code, search tables, recovery tests, and figures.

Beta Pictoris · TESS · exocomets · light curves · null result · injection recovery · public data