XIIth Hvar Astrophysical Colloquium proceedings
Written by Jaša Čalogović Friday, 05 October 2012 10:30
![HAC-XII-group-photo](/images/news/thumbnails/thumb_HAC-XII-group-photo.jpg)
The following page limits apply for the proceedings: reviews = 18 pages, invited talks = 14 pages, contributed talks = 12 pages, posters = 6 pages.
Manuscripts should be prepared in LaTeX, preferably using the Cent. Eur. Astrophys. Bull. style file which is available here.
Photos - XIth Hvar Astrophysical Colloquium
Written by Jaša Čalogović Tuesday, 10 July 2012 18:45
![HAC-XI-group-photo](/images/news/thumbnails/thumb_HAC-XI-group-photo.jpg)
Photos by LOC
Photos by participants
We would like to remind you that the deadline for submitting the manuscripts for Proceedings of XIth HAC (special volume of the Central European Astrophysical Bulletin) is October 30, 2012.
Venus transit on 6.6.2012 – Hvar solar telescope observations
Written by Jaša Čalogović Wednesday, 06 June 2012 16:37
![H-alpha, Venus transit](/images/news/thumbnails/thumb_Venus_tr_HA.jpg)
> Short movies generated from the telescope data can be accessed here
Online talk - Can solar activity and cosmic rays save us from global warming?
Latest news
Written by Jaša Čalogović Sunday, 01 April 2012 23:02
All those interested in solar influences on climate and especially in the contended topic about link between the cosmic rays and clouds can now online access the talk of Jaša Čalogović held on IAC, La Laguna on 15. March 2012.
Solar irradiance, cosmic rays and cloudiness over daily timescales
Latest publications
Written by Jaša Čalogović Tuesday, 20 December 2011 00:00
Although over centennial and greater timescales solar variability may be one of the most influential climate forcing agents, the extent to which solar activity influences climate over shorter time periods is poorly understood. If a link exists between solar activity and climate, it is likely via a mechanism connected to one (or a combination) of the following parameters: total solar irradiance (TSI), ultraviolet (UV) spectral irradiance, or the galactic cosmic ray (GCR) flux. We present an analysis based around a superposed epoch (composite) approach focusing on the largest TSI increases and decreases (the latter occurring in both the presence and absence of appreciable GCR reductions) over daily timescales...
GRL website
Cosmic ray modulation by different types of solar wind disturbances
Latest publications
Written by Mateja Dumbovic Tuesday, 20 December 2011 00:00
The amount of the galactic cosmic rays (primarily protons) that hit the Earth is greatly influenced by the solar activity. On the short time scales it can be substantially reduced by the passing of solar wind disturbances, such as interplanetary coronal mass ejections (ICMEs) and corotating interaction regions (CIRs). The resulting short-term cosmic ray depressions are generally denoted as Forbush decreases. We present a systematic statistical study of various aspects of Forbush decreases. The analysis is based on ground-based neutron monitor data and the in-situ solar wind data recorded by the Advanced Composition Explorer (ACE) satellite and provides empirical background for physical interpretations of short-term cosmic ray modulations.
read publication (A&A website)
First announcement - XIth Hvar Astrophysical Colloquium
Latest news
Tuesday, 01 November 2011 03:12
![binary star](/images/news/thumbnails/thumb_binary_star.jpg)
first announcement
further details & registration
First announcement - XIIth Hvar Astrophysical Colloquium
Latest news
Tuesday, 01 November 2011 03:12
![thumb sun_heliosphere](/images/news/thumbnails/thumb_sun_heliosphere.jpg)
![pdf](/media/jce/icons/pdf.png)
further details & registration
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