Roberto Gorelli points our attention at a recently published meteor related paper:

Observation of the alpha Carinid meteor shower 2020 unexpected outburst

This article has been submitted for publication by Juan Sebastian Bruzzone, Robert J. Weryk, Diego Janches, Carsten Baumann, Gunter Stober, and Jose Luis Hormaechea.

 

Abstract: We present observations of the sudden outburst of the α Carinid meteor shower recorded with the Southern Argentina Agile MEteor Radar-Orbital System (SAAMER-OS) near the South Toroidal sporadic region. The outburst peaked between 21 UT and 22 UT on October 14, 2020 and lasted 7 days (199◦ ≤ λʘ ≤ 205◦) with a mean Sun-centered geocentric ecliptic radiant of λg − λʘ = 271.04°, βg = −76.4°, and a geocentric speed of 33.3 km/s. Assuming a mass index value of s = 2.0, we compute a peak 24 hour-average flux of 0.029 met. /km^2 * hr to a limit of 9th magnitude, which is equivalent to a zenithal hourly rate (ZHR) of 5.7, and comparable to other established showers with similar mass indices. By further estimating the peak fluxes for other typical mass index values, we find that the outburst likely never exceeded a maximum ZHR of ∼ 44, well below the activity of other strong showers. The mean orbital elements resemble those of a short-period object: a = 3.5 ± 0.1 au, q ~ 1 au, e = 0.72 ± 0.02, i = 55.8° ± 0.3°, ω = 1° ± 173° , Ω = 21.7°, and are similar to those derived for two previous shower outbursts observed with SAAMER-OS at high southern ecliptic latitudes. Using the D’ criterion did not reveal a parent object associated with this shower in the known object catalogues.

You can download this paper for free: https://arxiv.org/pdf/2102.13043.pdf (9 pages).

 

Older meteor library news:

2021

  • Fireball characteristics derivable from acoustic data, by Luke McFadden, Peter Brown, Denis Vida and Pavel Spurný. (15 February 2021).
  • Detection of a bolide in Jupiter’s atmosphere with Juno UVS, by Rohini S. Giles, Thomas K. Greathouse, Joshua A. Kammer, G. Randall, Gladstone, Bertrand Bonfond, Vincent Hue, Denis C. Grodent, Jean-Claude Gérard, Maarten H. Versteeg, Scott J. Bolton, John E. P. Connerney and Steven M. Levin. (8 February 2021).
  • The Sariçiçek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids, by Ozan Unsalan, Peter Jenniskens, Qing-Zhu Yin, Ersin Kaygisiz, Jim Albers, David L. Clark, Mikael Granvik, Iskender Demirkol, Ibrahim Y. Erdogan, Aydin S. Bengu, Mehmet E. Özel, Zahide Terzioglu, Nayeob Gi, Peter Brown, Esref Yalcinkaya, Tuğba Temel, Dinesh K. Prabhu, Darrel K. Robertson, Mark Boslough, Daniel R. Ostrowski, Jamie Kimberley, Selman Er, Douglas J. Rowlands, Kathryn L. Bryson, Cisem Altunayarunsalan, Bogdan Ranguelov, Alexander Karamanov, Dragomir Tatchev, Özlem Kocahan, Michael I. Oshtrakh, Alevtina A. Maksimova, Maxim S. Karabanalov, Kenneth L. Verosub, Emily Levin, Ibrahim Uysal, Viktor Hoffmann, Takahiro Hiroi, Vishnu Reddy, Gulce O. Ildiz, Olcay Bolukbasi, Michael E. Zolensky, Rupert Hochleitner, Melanie Kaliwoda, Sinan Öngen, Rui Fausto, Bernardo A. Nogueira, Andrey V. Chukin, Daniela Karashanova, Vladimir A. Semionkin, Mehmet Yesiltas, Timothy Glotch, Ayberk Yilmaz, Jon M. Friedrich, Matthew E. Sanborn, Magdalena Huyskens, Karen Ziegler, Curtis D. Williams, Maria Schönbächler, Kerstin Bauer, Matthias M. M. Meier, Colin Maden, Henner Busemann, Kees C. Welten, Marc W. Caffee, Matthias Laubenstein, Qin Zhou, Qiu-Li LI, XianHua LI, Yu Liu, Guo-Qiang Tang, Derek W. G. Sears, Hannah L. Mclain, Jason P. Dworkin, Jamie E. Elsila, Daniel P. Glavin, Philippe Schmitt-Kopplin, Alexander Ruf, Lucille Le Corre, & Nico Schmedemann. (6 February 2021).
  • Relationship between Radar Cross Section and Optical Magnitude based on Radar and Optical Simultaneous Observations of Faint Meteors, by Ryou Ohsawa, Akira Hirota, Kohei Morita, Shinsuke Abe, Daniel Kastinen, Johan Kero, Csilla Szasz, Yasunori Fujiwara, Takuji Nakamura, Koji Nishimura, Shigeyuki Sako, Jun-ichi Watanabe, Tsutomu Aoki, Noriaki Arima, Ko Arimatsu, Mamoru Doi, Makoto Ichiki, Shiro Ikeda, Yoshifusa Ita, Toshihiro Kasuga, Naoto Kobayashi, Mitsuru Kokubo, Masahiro Konishi, Hiroyuki Maehara, Takashi Miyata, Yuki Mori, Mikio Morii, Tomoki Morokuma, Kentaro Motohara, Yoshikazu Nakada, Shin-ichiro Okumura, Yuki Sarugaku, Mikiya Sato, Toshikazu Shigeyama, Takao Soyano, Hidenori Takahashi, Masaomi Tanaka, Ken’ichi Tarusawa, Nozomu Tominaga, Seitaro Urakawa, Fumihiko Usui, Takuya Yamashita, Makoto Yoshikawa. (6 February 2021).
  • Ejby—A new H5/6 ordinary chondrite fall in Copenhagen, Denmark, by by H. Haack, A. N. Sørensen, A. Bischoff, M. Patzek, J.-A. Barrat, S. Midtskogen, E. Stempels, M. Laubenstein, R. Greenwood, P. Schmittkopplin, H. Busemann, C. Maden, K. Bauer, P. Morina, M. Schönbächler, P. Voss and T. Dahl-Jensen. (2 February 2021).
  • The Great Chinese Fireball of December 22, 2020, by Albino Carbognani. (7 January 2021).
  • Trajectory and orbit of the unique carbonaceous meteorite Flensburg, by Jiří Borovička, Felix Bettonvil, Gerd Baumgarten, Jörg Strunk, Mike Hankey, Pavel Spurný, and Dieter Heinlein. (7 January 2021).
  • Remarks on generating realistic synthetic meteoroid orbits, by T. J. Jopek. (6 January 2021).

2020

2019

2018

2017