On the magnetic characteristics of magnetic holes in the solar wind between Mercury and Earth

<p>The occurrence rate of linear and pseudo magnetic holes has been determined during MESSENGER&#8217;s cruise phase starting from Earth (2005) and arriving at Mercury (2011). It is shown that the occurrence rate of linear magnetic holes, defined as a maximum of 10&#226;&#151;&#166; rotation of the magnetic field over the hole, slowly decreases from Mercury to Earth. The pseudo magnetic holes, defined as a rotation between 10&#226;&#151;&#166; and 45&#226;&#151;&#166; over the hole, have mostly a constant occurrence rate, with a slight increas in front of the Earth and a decrease around the Earth. The width and depth of these structures seem to strongly differ depending on whether they are inside<br>or outside of Venus&#8217;s orbit.</p>

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