- Surname:
Jetsu
- Forenames:
Lauri, Johannes
- Title:
University lecturer in astronomy
- Education:
MSc (1988, Univ. Helsinki),
PhD (1994 Univ. Helsinki),
Docent (1996, Univ. Helsinki),
Docent (1997, Univ. Oulu)
- Main research interest:
Period analysis of astronomical, geophysical and egyptological data
(i.e. unequally spaced time series or series of time points)
- Address:
Department of Physics,
P.O.Box 64 (Gustaf Hällströmin katu 2a),
FIN-00014 University of Helsinki, FINLAND
- Phone:
+358-2941 22946 (work)
and +358-45-674 6983 (home), Email: lauri.jetsu@helsinki.fi
(Ir)Relevant
Current research
"Discrete Chi-Square Method discovers solar forcing in El Nino time series: The Pacific Ocean as a bolometer measuring the solar dynamo light curve in real-time"
Algol research
Our research of the role of the eclipsing binary
Algol in Ancient Egypt was published
in these two papers
"Did the ancient Egyptians record the period of Algol - The Raging one?"
2013,
The Astrophysical Journal,
773
, A1 (1-14) (2013, July 18th)
"Shifting Milestones of Natural Sciences: The Ancient Egyptian Discovery of Algol's Period Confirmed"
2015,
PLOS ONE,
10(12),
e0144140 (23pp) (2015, December 17th)
Here is some of the public response
to these publications.
- Lectures:
Tieteellinen laskenta I
(Scientific computing I)
- Lectures:
Tähtitieteen käytännön menetelmät
(Practical methods in astronomy)
- Lectures:
Havaitsevan tähtitieteen peruskurssi I
(Observ Observational astronomy I)
- Lectures:
Aikasarja-analyysi tähtitieteessä I
(Time series analysis in astronomy I)
- Lectures:
Aikasarja-analyysi tähtitieteessä II
(Time series analysis in astronomy II)
- Lectures:
Muuttuvat tähdet
(Variable stars)
- Lectures:
Binary Stars
(Binary Stars)
- PhD thesis supervision:
L. Alha, T. Hackman, J. Lehtinen, S. Porceddu
- M.Sc. thesis supervision:
M. Kokko, S. Porceddu, T. Lyytinen, J. Lehtinen, V. Solea, V. Mäkelä,
I. Hiilesmaa
- Databases: |
Physics: e-print Archive |
ADS |
Simbad |
Web of Science |
- Observatory parties on: |
June 8th, 2001 |
April 26th, 2002 |
July 25th, 2003 |
April 2nd, 2004 |
July, 2004 |
October 22nd, 2004 |
April 29th, 2005 |
August 19th, 2005 |
March 31st, 2006 |
July 21st, 2006 |
July 20th, 2007 |
July 25th, 2008 |
July 31st, 2009 |
Last updated: July 4th, 1642 (AD)