Optical observations of an ultrabright constellation satellite

Autor: Sangeetha Nandakumar, Siegfried Eggl, Jeremy Tregloan-Reed, Christian Adam, Jasmine Anderson-Baldwin, Michele Bannister, Adam Battle, Zouhair Benkhaldoun, Vishnu Reddy, Juanpablo Colque, Guillermo Damke, Ilse Plauchu Frayn, Mourad Ghachoui, Francisco Guillen, Aziz Kaeouach, Harrison Krantz, Marco Langbroek, Nicholas Rattenbury, Ryan Ridden-Harper, Brad Young, Eduardo Unda-Sanzana, Alan Watson, John Barentine, Piero Benvenuti, Federico Di Vruno, Mike Peel, Meredith Rawls, Connie Walker, Cees Bassa, Catalina Flores-Quintana, Pablo Garcia, Sam Kim, Penelope Longa-Perna, Edgar Ortiz, Angel Otarola, María Romero, Pedro Sanhueza, Giorgio Siringo, Mario Soto

Large constellations of bright artificial satellites in low Earth orbit pose significant challenges to ground-based astronomy [1]. Currently orbiting constellation satellites have visual brightnesses between apparent magnitudes 4 and 6, satellite ope

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1fe93460db3ce8e7bd8769913785528e
https://doi.org/10.21203/rs.3.rs-2557594/v1

The CM carbonaceous chondrite regolith Diepenveen

Autor: Aaron S. Burton, Alexander Ruf, Jason P. Dworkin, Richard N. Zare, Qing-Zhu Yin, Josh Wimpenny, Matthew E. Sanborn, Matthias M. M. Meier, Qinghao Wu, Peter Jenniskens, Wim van Westrenen, Daniel P. Glavin, Marco Langbroek, Kunihiko Nishiizumi, Jacob Kuiper, Philippe Schmitt-Kopplin, Sebastiaan J. De Vet, Karen Ziegler, Akane Yamakawa, Henk Nieuwenhuis, Mourad Harir, Niek De Kort, Michael E. Zolensky, Marc W. Caffee, Leo M. Kriegsman, Kees C. Welten

Publikováno v: The Diepenveen Meteorite Consortium 2019, ' The CM carbonaceous chondrite regolith Diepenveen ', Meteoritics and Planetary Science, vol. 54, no. 7, pp. 1431-1461 . https://doi.org/10.1111/maps.13297
Meteoritics and Planetary Science, 54(7), 1431. The University of Arkansas Press
Meteorit. Planet. Sci. 54, 1431-1461 (2019)
Meteoritics and Planetary Science, 54(7), 1431-1461. The University of Arkansas Press

A carbonaceous chondrite was recovered immediately after the fall near the village of Diepenveen in the Netherlands on October 27, 1873, but came to light only in 2012. Analysis of sodium and poly-aromatic hydrocarbon content suggests little contamin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b5a95e8b29cc71a248ac10753a25cee
https://hdl.handle.net/1871.1/0308f96e-ec25-4688-bfd5-fc18946c1464

Batavians and Romans on the Lower Rhine

Autor: Marco Langbroek

Publikováno v: Archaeological Dialogues. 9:16-38

This paper is a plea for the rehabilitation of the concept of Romanisation in the discussion about socio-cultural change resulting from the confrontation of (proto-)historical peoples with Roman power and an often dominant Roman culture. In the theor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::246e518bcb9fe122b59a7702a191bc0b
https://doi.org/10.1017/s1380203800001963

Visual observations of 1998 Leonids in Delingha and their preliminary analysis

Autor: M. de Lignie, Haibin Zhao, Marco Langbroek, Guangyu Li, Pinxin Xu

Publikováno v: Chinese Science Bulletin. 45:2142-2147

On the basis of the observational data obtained by the Sino-Dutch Joint Leonids Observation Team at Delingha Station of Purple Mountain Observatory from Nov. 13 to 18, 1998, and those obtained in other places of China during the same period, the dist

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c0ad8287f5276bc4542e3df0f923e24
https://doi.org/10.1007/bf02886318

Leonid outburst activity 1996: A broad structure and a first occurrence of a narrow peak of fainter meteors

Autor: Marco Langbroek

Publikováno v: Meteoritics & Planetary Science. 34:137-145

— In 1996, a broad outburst structure of bright Leonid meteors similar to the 1995 and the 1994 displays (Jenniskens, 1996; Langbroek, 1996b) was observed. In addition, a second narrow outburst structure of fainter meteors, which will be reported a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92fe35933c18da93aae9667b024bf889
https://doi.org/10.1111/j.1945-5100.1999.tb01739.x