Tim Howard

Research Scientist

Here are the projects I am currently working on.

This is a coronal mass ejection 3-D reconstruction tool developed by James Tappin and myself. Using leading edge measurements the model reproduces 3-D parameters for a given ICME observed with heliospheric imagers and interplanetary scintillation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

white light images. It has shown to be highly accurate at ICME study and for space weather forecasting.

The TH (Tappin-Howard) Model

Projects

There has been a problem separating the physics describing the appearance of a CME with the physics describing its evolution through the inner heliosphere.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the heliosphere. Some evidence suggests that the interaction of the CME with the interplanetary medium may be more dynamic than is traditionally thought. I am conducting a study of CMEs and ICMEs to identify the nature of this interaction.

Understanding the Evolution of CMEs

Two main aspects required for accurate space weather prediction are the arrival time of the CME and the nature of its magnetic field. I am working on innovative techniques including new hardware and model ideas to assist in the improvement of the prediction of both.

New data from the STEREO spacecraft provide us with simultaneous multiple views of CMEs for the first time. We have employed geometrical techniques on these multiple CME images to reconstruct their 3-D structure. Efforts are also on doing the same with ICMEs observed by the heliospheric imagers.

My book: Coronal Mass Ejections: An Introduction

Innovations for Improved Space Weather Forecasting

Three-dimensional recronstruction of CMEs

Home | About Me | Projects | Refereed Publications | Other Publications | Other Meetings | Related Links | Download Center | Contact

Home

About Me

Projects

Publications

Refereed Publications

Other Publications

Other Meetings

Related Links

Download Center

Contact

We are developing a spacecraft for imaging coronal mass ejections at large distances from the Sun. This is an experimental 3U cubesat spacecraft of dimensions 30cm x 10cm x 10cm. It is intended to replace the existing the heliospheric imagers when they reach the point where they can no longer be used for space weather forecasting.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the heliosphere. Some evidence suggests that the interaction of the CME with the interplanetary medium may be more dynamic than is traditionally thought. I am conducting a study of CMEs and ICMEs to identify the nature of this interaction.

CHIME (Cubesat Heliospheric IMager Experiment)

I have written a book aimed at the graduate student or CME outsider getting a start in space physics. It focuses on CMEs from a multiple discipline perspective (solar, heliospheric, magnetospheric).

A copy can be purchased from Springer from here.

We are developing the concept for an operational interplanetary scintillation radio telescope. IPS provides the ability to detect and track CMEs with advantages over the traditional white light means.

Operational Interplanetary Scintillation