(apart from my
publications,
photos,
travels)
-
October, 2023: Martijn added Rob's last published article in Zenith
Kees de Jagers verjaardagsalbum van de zon.
-
February, 2023: Martijn & Riet Rutten added
in memoriam Rob Rutten.
-
August, 2022: updated
Compendium solar spectrum formation
on
arXiv/ADS.
-
July, 2022: this month Utrecht University denied my persisting
existence. Please replace email address <R.J.Rutten at uu.nl> or
<r.j.rutten at uu.nl> by more reliable <robenrietjerutten
apestaart-symbol
gmail.com>.
-
January, 2022: “In Memoriam Cornelis de Jager” was finally
published
in Solar Physics. The uncensored
arXiv version
is better.
-
May, 2021: start of a
solar file archive
with old solar line tables, spectrum atlases, model atmospheres,
observations.
-
April 29, 2021 honoring Cornelis (Kees) de Jager on his 100th
birthday:
De zon op Keesdagen / The Sun on Kees days,
Kees de Jager 100!
-
April, 2021: this website is now at
https://robrutten.nl. DOT pages at
https://robrutten.nl/dot/DOT_home.html.
-
March, 2021:
Compendium solar spectrum formation
for a
NIT Calicut solar physics school. Brief but with Wikistyle page openers for a full course.
This second Lingezicht Astrophysics Report is also
livelier here than the
arXiv/ADS
version.
-
December, 2020:
Small-scale solar surface magnetism
(arXiv/ADS). Summary in
“Solar Magnetic Variability and Climate” by C. de
Jager, S. Duhau and A.C.T. Nieuwenhuizen (book content,
order page).
-
August, 2020:
SolO campfires in SDO images. This inaugural webpost of
Lingezicht Astrophysics Reports is updated here beyond
the
arXiv/ADS
post and retains an
epilogue
on the start of this report series.
-
March, 2020:
hands-on demo
of my
SDO alignment software
for a covid-postponed
EU SolarNet school.
-
August, 2019: solar spectrum formation for irradiancers, a brief
(10 equations only) tutorial expanding my
RTSA notes
in a review
published here
- but better view the
arXiv pdf
because Springer destroyed 100+ citation links (more Springer nasturtia versus A&A and SoPh praise).
-
February, 2018:
A year at Sunspot. Reminiscenses of 1977 - 1978 at the
Sacramento Peak Observatory.
-
January, 2018:
renewed IDL programs to
obtain and co-align image cutout sequences from the
Solar Dynamics Observatory. See
manual. Also a multi-movie browser and blinker
showex.pro.
-
May, 2017:
The Sun with ALMA: jets and contrails! at the
72th Nederlandse Astronomenconferentie.
-
September, 2016:
latex macro
for linkers opening specific pages with cited figures, tables,
equations, etc.
-
November, 2015: new edition of
“Introduction to Astrophysical Radiative Transfer”
by Luc Rouppe van der Voort (Oslo).
-
March 1, 2012:
Rietje's webstek.
-
November 25, 2011: my last day at the
nearly closed
SIU.
As farewell I scanned the courses of M.G.J. Minnaert with which I
started my 50 years in
Utrecht astronomy. I also scanned vintage lecture notes by C. Zwaan and his
high-school texts with J. van der Rijst (all in Dutch, under
Sterrenkunde dictaten). Cleaning out my desk also made me scan or retrieve ancient
courses
“Natuurkunde van zon en sterren”
(1978),
“Fotosferische snelheidsvelden”
(1983),
“Opwekking en transport van straling”
(1991),
“Introduction to Solar Spectrum Formation”
(1993),
“Generation and Transport of Radiation”
(1995),
“Solar and Stellar Magnetism”
(1999).
-
January 2011: end of operation funding for the
Dutch Open Telescope. It is mothballed since - you are welcome to revive it.
-
November 2010:
“citeads” latex commands
that generate citations in a pdf file which link to the corresponding
ADS abstract page.
-
October 2010:
“solabs” solar abstracts
with ADS and ArXiv links for many solar physicists.
-
September 2010: updates of my
simple IDL manuals.
-
August 2010: a
speckle demonstration movie
on the
DOT website.
-
July 2009:
USO School “Solar Magnetism”
held at ASTRON, Dwingeloo, The Netherlands.
-
October 2008:
photographs from Nederlandsch-Indisch Java and Sumatra
taken by my father during 1936-1939.
-
September 2008:
Concluding Remarks
of the 12th European Solar Physics Meeting in a new webpost format for
talks.
-
April 2007:
farewell party at Sonnenborgh
at my mandatory retirement.
-
December 2006:
final report
of the
ESMN
which I led during 1998 - 2006 (in memoriam).
-
August 2006:
200-km kayak voyage circuiting the “Eye of Quebec”
asteroid impact.
-
July 2003:
Epsilon, written in 1997 in memory of Richard N. Thomas, was finally
published.
-
November 2001:
review of solar atmosphere modeling
honoring C. (“Kees”) de Jager's 80th birthday.
-
November 2000: the
housing of Utrecht astronomy
incurred
my wrath
-
February 2000: Cornelis (“Kees”) Zwaan obituaries for
Solar Physics,
Bull. Am. Astron. Soc., and JOSO Annual Report 1999. Also a Zwaan
photograph, and Zwaan's
publication list. Zwaan's correspondence and other science materials are
archived at the
Rijksarchiefdienst Noord-Holland.
-
November 1999:
popular-astronomy article
on what one did not see during the August 11 eclipse (in
Dutch). What one did not see were Fraunhofer lines! The
inner corona is the only sunshine-illuminated body in the entire solar
system that does not show them. Walter Grotrian
explained their absence in 1934 as due to enormous Doppler smearing in
Thomson scattering, but without daring to suggest that such large
electron velocities indicate very high temperature. He did that
only much later, after identifying the few coronal emission lines in the
visible as due to highly ionized iron. During a total solar eclipse you
should particularly appreciate that the corona basks you in pearly
sunshine without Fraunhofer lines (and polarized as well).
-
November 1997: photographs of the DOT First Light Ceremony
(featuring Crown Prince Willem-Alexander, Science Minister Jo Ritzen and
many other dignitaries) among other
DOT pictures.
-
August 1997: many
thirty-year old astronomer portraits
added to the
photo gallery.
-
June 1995: start of this website, to offer my course notes
“Radiative transfer in stellar atmospheres”
electronically. I am proud that it started just
when the web came of age, at the same time as the second-best astronomy site: the
Astronomy Picture of the Day
(here is the
very first APOD display). The number-one astronomy site is the
ADS literature server, started in 1994 by
these people.